diff -r c91530f18d9c -r f3615235dc4d src/HOL/Nominal/Examples/Class.thy
--- a/src/HOL/Nominal/Examples/Class.thy	Thu May 24 12:00:47 2007 +0200
+++ b/src/HOL/Nominal/Examples/Class.thy	Thu May 24 12:09:38 2007 +0200
@@ -1,7 +1,7 @@
 (* $Id$ *)
 
-theory Class 
-imports "../Nominal" 
+theory ClassWork 
+imports "Nominal" 
 begin
 
 section {* Term-Calculus from Urban's PhD *}
@@ -11,11 +11,34 @@
 text {* types *}
 
 nominal_datatype ty =
-    PROP "string"
+    PR "string"
   | NOT  "ty"
   | AND  "ty" "ty"   ("_ AND _" [100,100] 100)
   | OR   "ty" "ty"   ("_ OR _" [100,100] 100)
-  | IMP  "ty" "ty"   ("_ IMPL _" [100,100] 100)
+  | IMP  "ty" "ty"   ("_ IMP _" [100,100] 100)
+
+instance ty :: size ..
+
+nominal_primrec
+  "size (PR s)     = (1::nat)"
+  "size (NOT T)     = 1 + size T"
+  "size (T1 AND T2) = 1 + size T1 + size T2"
+  "size (T1 OR T2)  = 1 + size T1 + size T2"
+  "size (T1 IMP T2) = 1 + size T1 + size T2"
+by (rule TrueI)+
+
+lemma ty_cases:
+  fixes T::ty
+  shows "(\<exists>s. T=PR s) \<or> (\<exists>T'. T=NOT T') \<or> (\<exists>S U. T=S OR U) \<or> (\<exists>S U. T=S AND U) \<or> (\<exists>S U. T=S IMP U)"
+by (induct T rule:ty.weak_induct) (auto)
+
+lemma fresh_ty:
+  fixes a::"coname"
+  and   x::"name"
+  and   T::"ty"
+  shows "a\<sharp>T" and "x\<sharp>T"
+by (nominal_induct T rule: ty.induct)
+   (auto simp add: fresh_string)
 
 text {* terms *}
 
@@ -33,12 +56,6 @@
   | ImpR "\<guillemotleft>name\<guillemotright>(\<guillemotleft>coname\<guillemotright>trm)" "coname"       ("ImpR (_).<_>._ _" [100,100,100,100] 100)
   | ImpL "\<guillemotleft>coname\<guillemotright>trm" "\<guillemotleft>name\<guillemotright>trm" "name"     ("ImpL <_>._ (_)._ _" [100,100,100,100,100] 100)
 
-text {* Induction principles *}
-
-thm trm.weak_induct --"weak"
-thm trm.induct      --"strong"
-thm trm.induct'     --"strong with explicit context (rarely needed)"
-
 text {* named terms *}
 
 nominal_datatype ntrm = Na "\<guillemotleft>name\<guillemotright>trm" ("((_):_)" [100,100] 100)
@@ -97,7 +114,6 @@
 
 lemmas eq_bij = pt_bij[OF pt_name_inst, OF at_name_inst] pt_bij[OF pt_coname_inst, OF at_coname_inst]
 
-
 lemma crename_name_eqvt[eqvt]:
   fixes pi::"name prm"
   shows "pi\<bullet>(M[d\<turnstile>c>e]) = (pi\<bullet>M)[(pi\<bullet>d)\<turnstile>c>(pi\<bullet>e)]"
@@ -105,7 +121,6 @@
 apply(auto simp add: fresh_bij eq_bij)
 done
 
-
 lemma crename_coname_eqvt[eqvt]:
   fixes pi::"coname prm"
   shows "pi\<bullet>(M[d\<turnstile>c>e]) = (pi\<bullet>M)[(pi\<bullet>d)\<turnstile>c>(pi\<bullet>e)]"
@@ -127,46 +142,2769 @@
 apply(auto simp add: fresh_bij eq_bij)
 done
 
+lemmas rename_eqvts = crename_name_eqvt crename_coname_eqvt
+                      nrename_name_eqvt nrename_coname_eqvt
+lemma nrename_fresh:
+  assumes a: "x\<sharp>M"
+  shows "M[x\<turnstile>n>y] = M"
+using a
+by (nominal_induct M avoiding: x y rule: trm.induct)
+   (auto simp add: trm.inject fresh_atm abs_fresh fin_supp abs_supp)
+
+lemma crename_fresh:
+  assumes a: "a\<sharp>M"
+  shows "M[a\<turnstile>c>b] = M"
+using a
+by (nominal_induct M avoiding: a b rule: trm.induct)
+   (auto simp add: trm.inject fresh_atm abs_fresh)
+
+lemma nrename_nfresh:
+  fixes x::"name"
+  shows "x\<sharp>y\<Longrightarrow>x\<sharp>M[x\<turnstile>n>y]"
+by (nominal_induct M avoiding: x y rule: trm.induct)
+   (auto simp add: fresh_atm abs_fresh abs_supp fin_supp)
+
+ lemma crename_nfresh:
+  fixes x::"name"
+  shows "x\<sharp>M\<Longrightarrow>x\<sharp>M[a\<turnstile>c>b]"
+by (nominal_induct M avoiding: a b rule: trm.induct)
+   (auto simp add: fresh_atm abs_fresh abs_supp fin_supp)
+
+lemma crename_cfresh:
+  fixes a::"coname"
+  shows "a\<sharp>b\<Longrightarrow>a\<sharp>M[a\<turnstile>c>b]"
+by (nominal_induct M avoiding: a b rule: trm.induct)
+   (auto simp add: fresh_atm abs_fresh abs_supp fin_supp)
+
+lemma nrename_cfresh:
+  fixes c::"coname"
+  shows "c\<sharp>M\<Longrightarrow>c\<sharp>M[x\<turnstile>n>y]"
+by (nominal_induct M avoiding: x y rule: trm.induct)
+   (auto simp add: fresh_atm abs_fresh abs_supp fin_supp)
+
+lemma nrename_nfresh':
+  fixes x::"name"
+  shows "x\<sharp>(M,z,y)\<Longrightarrow>x\<sharp>M[z\<turnstile>n>y]"
+by (nominal_induct M avoiding: x z y rule: trm.induct)
+   (auto simp add: fresh_prod fresh_atm abs_fresh abs_supp fin_supp)
+
+lemma crename_cfresh':
+  fixes a::"coname"
+  shows "a\<sharp>(M,b,c)\<Longrightarrow>a\<sharp>M[b\<turnstile>c>c]"
+by (nominal_induct M avoiding: a b c rule: trm.induct)
+   (auto simp add: fresh_prod fresh_atm abs_fresh abs_supp fin_supp)
+
+lemma nrename_rename:
+  assumes a: "x'\<sharp>M"
+  shows "([(x',x)]\<bullet>M)[x'\<turnstile>n>y]= M[x\<turnstile>n>y]"
+using a
+apply(nominal_induct M avoiding: x x' y rule: trm.induct)
+apply(auto simp add: abs_fresh fresh_bij fresh_atm fresh_prod fresh_right calc_atm abs_supp fin_supp)
+apply(auto simp add: fresh_left calc_atm fresh_prod fresh_atm)
+done
+
+lemma crename_rename:
+  assumes a: "a'\<sharp>M"
+  shows "([(a',a)]\<bullet>M)[a'\<turnstile>c>b]= M[a\<turnstile>c>b]"
+using a
+apply(nominal_induct M avoiding: a a' b rule: trm.induct)
+apply(auto simp add: abs_fresh fresh_bij fresh_atm fresh_prod fresh_right calc_atm abs_supp fin_supp)
+apply(auto simp add: fresh_left calc_atm fresh_prod fresh_atm)
+done
+
+lemmas rename_fresh = nrename_fresh crename_fresh 
+                      nrename_nfresh crename_nfresh crename_cfresh nrename_cfresh
+                      nrename_nfresh' crename_cfresh'
+                      nrename_rename crename_rename
+
+lemma better_nrename_Cut:
+  assumes a: "x\<sharp>(u,v)"
+  shows "(Cut <a>.M (x).N)[u\<turnstile>n>v] = Cut <a>.(M[u\<turnstile>n>v]) (x).(N[u\<turnstile>n>v])"
+proof -
+  obtain x'::"name"   where fs1: "x'\<sharp>(M,N,a,x,u,v)" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain a'::"coname" where fs2: "a'\<sharp>(M,N,a,x,u,v)" by (rule exists_fresh(2), rule fin_supp, blast)
+  have eq1: "(Cut <a>.M (x).N) = (Cut <a'>.([(a',a)]\<bullet>M) (x').([(x',x)]\<bullet>N))"
+    using fs1 fs2 by (rule_tac sym, auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  have "(Cut <a'>.([(a',a)]\<bullet>M) (x').([(x',x)]\<bullet>N))[u\<turnstile>n>v] = 
+                        Cut <a'>.(([(a',a)]\<bullet>M)[u\<turnstile>n>v]) (x').(([(x',x)]\<bullet>N)[u\<turnstile>n>v])"
+    using fs1 fs2
+    apply -
+    apply(rule nrename.simps)
+    apply(simp add: fresh_left calc_atm)
+    apply(simp add: fresh_left calc_atm)
+    done
+  also have "\<dots> = Cut <a>.(M[u\<turnstile>n>v]) (x).(N[u\<turnstile>n>v])" using fs1 fs2 a
+    apply -
+    apply(simp add: trm.inject alpha fresh_atm fresh_prod rename_eqvts)
+    apply(simp add: calc_atm)
+    apply(simp add: rename_fresh fresh_atm)
+    done
+  finally show "(Cut <a>.M (x).N)[u\<turnstile>n>v] = Cut <a>.(M[u\<turnstile>n>v]) (x).(N[u\<turnstile>n>v])" using eq1
+    by simp
+qed
+
+lemma better_crename_Cut:
+  assumes a: "a\<sharp>(b,c)"
+  shows "(Cut <a>.M (x).N)[b\<turnstile>c>c] = Cut <a>.(M[b\<turnstile>c>c]) (x).(N[b\<turnstile>c>c])"
+proof -
+  obtain x'::"name"   where fs1: "x'\<sharp>(M,N,a,x,b,c)" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain a'::"coname" where fs2: "a'\<sharp>(M,N,a,x,b,c)" by (rule exists_fresh(2), rule fin_supp, blast)
+  have eq1: "(Cut <a>.M (x).N) = (Cut <a'>.([(a',a)]\<bullet>M) (x').([(x',x)]\<bullet>N))"
+    using fs1 fs2 by (rule_tac sym, auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  have "(Cut <a'>.([(a',a)]\<bullet>M) (x').([(x',x)]\<bullet>N))[b\<turnstile>c>c] = 
+                        Cut <a'>.(([(a',a)]\<bullet>M)[b\<turnstile>c>c]) (x').(([(x',x)]\<bullet>N)[b\<turnstile>c>c])"
+    using fs1 fs2
+    apply -
+    apply(rule crename.simps)
+    apply(simp add: fresh_left calc_atm)
+    apply(simp add: fresh_left calc_atm)
+    done
+  also have "\<dots> = Cut <a>.(M[b\<turnstile>c>c]) (x).(N[b\<turnstile>c>c])" using fs1 fs2 a
+    apply -
+    apply(simp add: trm.inject alpha fresh_atm fresh_prod rename_eqvts)
+    apply(simp add: calc_atm)
+    apply(simp add: rename_fresh fresh_atm)
+    done
+  finally show "(Cut <a>.M (x).N)[b\<turnstile>c>c] = Cut <a>.(M[b\<turnstile>c>c]) (x).(N[b\<turnstile>c>c])" using eq1
+    by simp
+qed
+
+lemma crename_id:
+  shows "M[a\<turnstile>c>a] = M"
+by (nominal_induct M avoiding: a rule: trm.induct) (auto)
+
+lemma nrename_id:
+  shows "M[x\<turnstile>n>x] = M"
+by (nominal_induct M avoiding: x rule: trm.induct) (auto)
+
+lemma nrename_swap:
+  shows "x\<sharp>M \<Longrightarrow> [(x,y)]\<bullet>M = M[y\<turnstile>n>x]"
+by (nominal_induct M avoiding: x y rule: trm.induct) 
+   (simp_all add: calc_atm fresh_atm trm.inject alpha abs_fresh abs_supp fin_supp)
+
+lemma crename_swap:
+  shows "a\<sharp>M \<Longrightarrow> [(a,b)]\<bullet>M = M[b\<turnstile>c>a]"
+by (nominal_induct M avoiding: a b rule: trm.induct) 
+   (simp_all add: calc_atm fresh_atm trm.inject alpha abs_fresh abs_supp fin_supp)
+
+lemma crename_ax:
+  assumes a: "M[a\<turnstile>c>b] = Ax x c" "c\<noteq>a" "c\<noteq>b"
+  shows "M = Ax x c"
+using a
+apply(nominal_induct M avoiding: a b x c rule: trm.induct)
+apply(simp_all add: trm.inject split: if_splits)
+done
+
+lemma nrename_ax:
+  assumes a: "M[x\<turnstile>n>y] = Ax z a" "z\<noteq>x" "z\<noteq>y"
+  shows "M = Ax z a"
+using a
+apply(nominal_induct M avoiding: x y z a rule: trm.induct)
+apply(simp_all add: trm.inject split: if_splits)
+done
+
 text {* substitution functions *}
 
+lemma fresh_perm_coname:
+  fixes c::"coname"
+  and   pi::"coname prm"
+  and   M::"trm"
+  assumes a: "c\<sharp>pi" "c\<sharp>M"
+  shows "c\<sharp>(pi\<bullet>M)"
+using a
+apply -
+apply(simp add: fresh_left)
+apply(simp add: at_prm_fresh[OF at_coname_inst] fresh_list_rev)
+done
+
+lemma fresh_perm_name:
+  fixes x::"name"
+  and   pi::"name prm"
+  and   M::"trm"
+  assumes a: "x\<sharp>pi" "x\<sharp>M"
+  shows "x\<sharp>(pi\<bullet>M)"
+using a
+apply -
+apply(simp add: fresh_left)
+apply(simp add: at_prm_fresh[OF at_name_inst] fresh_list_rev)
+done
+
+lemma fresh_fun_simp_NotL:
+  assumes a: "x'\<sharp>P" "x'\<sharp>M"
+  shows "fresh_fun (\<lambda>x'. Cut <c>.P (x').NotL <a>.M x') = Cut <c>.P (x').NotL <a>.M x'"
+using a
+apply -
+apply(rule fresh_fun_app)
+apply(rule pt_name_inst)
+apply(rule at_name_inst)
+apply(finite_guess)
+apply(subgoal_tac "\<exists>n::name. n\<sharp>(c,P,a,M)")
+apply(erule exE)
+apply(rule_tac x="n" in exI)
+apply(simp add: fresh_prod abs_fresh)
+apply(fresh_guess)
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+apply(fresh_guess)
+done
+
+lemma fresh_fun_NotL[eqvt_force]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "pi1\<bullet>fresh_fun (\<lambda>x'. Cut <c>.P (x').NotL <a>.M x')=
+             fresh_fun (pi1\<bullet>(\<lambda>x'. Cut <c>.P (x').NotL <a>.M x'))"
+  and   "pi2\<bullet>fresh_fun (\<lambda>x'. Cut <c>.P (x').NotL <a>.M x')=
+             fresh_fun (pi2\<bullet>(\<lambda>x'. Cut <c>.P (x').NotL <a>.M x'))"
+apply -
+apply(perm_simp)
+apply(generate_fresh "name")
+apply(auto simp add: fresh_prod)
+apply(simp add: fresh_fun_simp_NotL)
+apply(rule sym)
+apply(rule trans)
+apply(rule fresh_fun_simp_NotL)
+apply(rule fresh_perm_name)
+apply(assumption)
+apply(assumption)
+apply(rule fresh_perm_name)
+apply(assumption)
+apply(assumption)
+apply(simp add: at_prm_fresh[OF at_name_inst])
+apply(perm_simp)
+apply(subgoal_tac "\<exists>n::name. n\<sharp>(P,M,pi2\<bullet>P,pi2\<bullet>M,pi2)")
+apply(simp add: fresh_prod)
+apply(auto)
+apply(simp add: fresh_fun_simp_NotL calc_atm)
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+done
+
+lemma fresh_fun_simp_AndL1:
+  assumes a: "z'\<sharp>P" "z'\<sharp>M" "z'\<sharp>x"
+  shows "fresh_fun (\<lambda>z'. Cut <c>.P (z').AndL1 (x).M z') = Cut <c>.P (z').AndL1 (x).M z'"
+using a
+apply -
+apply(rule fresh_fun_app)
+apply(rule pt_name_inst)
+apply(rule at_name_inst)
+apply(finite_guess)
+apply(subgoal_tac "\<exists>n::name. n\<sharp>(c,P,x,M)")
+apply(erule exE)
+apply(rule_tac x="n" in exI)
+apply(simp add: fresh_prod abs_fresh)
+apply(fresh_guess)
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+apply(fresh_guess)
+done
+
+lemma fresh_fun_AndL1[eqvt_force]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "pi1\<bullet>fresh_fun (\<lambda>z'. Cut <c>.P (z').AndL1 (x).M z')=
+             fresh_fun (pi1\<bullet>(\<lambda>z'. Cut <c>.P (z').AndL1 (x).M z'))"
+  and   "pi2\<bullet>fresh_fun (\<lambda>z'. Cut <c>.P (z').AndL1 (x).M z')=
+             fresh_fun (pi2\<bullet>(\<lambda>z'. Cut <c>.P (z').AndL1 (x).M z'))"
+apply -
+apply(perm_simp)
+apply(subgoal_tac "\<exists>n::name. n\<sharp>(P,M,x,pi1\<bullet>P,pi1\<bullet>M,pi1\<bullet>x,pi1)")
+apply(simp add: fresh_prod)
+apply(auto)
+apply(simp add: fresh_fun_simp_AndL1 at_prm_fresh[OF at_name_inst])
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+apply(perm_simp)
+apply(subgoal_tac "\<exists>n::name. n\<sharp>(P,M,x,pi2\<bullet>P,pi2\<bullet>M,pi2\<bullet>x,pi2)")
+apply(simp add: fresh_prod)
+apply(auto)
+apply(simp add: fresh_fun_simp_AndL1 calc_atm)
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+done
+
+lemma fresh_fun_simp_AndL2:
+  assumes a: "z'\<sharp>P" "z'\<sharp>M" "z'\<sharp>x"
+  shows "fresh_fun (\<lambda>z'. Cut <c>.P (z').AndL2 (x).M z') = Cut <c>.P (z').AndL2 (x).M z'"
+using a
+apply -
+apply(rule fresh_fun_app)
+apply(rule pt_name_inst)
+apply(rule at_name_inst)
+apply(finite_guess)
+apply(subgoal_tac "\<exists>n::name. n\<sharp>(c,P,x,M)")
+apply(erule exE)
+apply(rule_tac x="n" in exI)
+apply(simp add: fresh_prod abs_fresh)
+apply(fresh_guess)
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+apply(fresh_guess)
+done
+
+lemma fresh_fun_AndL2[eqvt_force]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "pi1\<bullet>fresh_fun (\<lambda>z'. Cut <c>.P (z').AndL2 (x).M z')=
+             fresh_fun (pi1\<bullet>(\<lambda>z'. Cut <c>.P (z').AndL2 (x).M z'))"
+  and   "pi2\<bullet>fresh_fun (\<lambda>z'. Cut <c>.P (z').AndL2 (x).M z')=
+             fresh_fun (pi2\<bullet>(\<lambda>z'. Cut <c>.P (z').AndL2 (x).M z'))"
+apply -
+apply(perm_simp)
+apply(subgoal_tac "\<exists>n::name. n\<sharp>(P,M,x,pi1\<bullet>P,pi1\<bullet>M,pi1\<bullet>x,pi1)")
+apply(simp add: fresh_prod)
+apply(auto)
+apply(simp add: fresh_fun_simp_AndL2 at_prm_fresh[OF at_name_inst])
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+apply(perm_simp)
+apply(subgoal_tac "\<exists>n::name. n\<sharp>(P,M,x,pi2\<bullet>P,pi2\<bullet>M,pi2\<bullet>x,pi2)")
+apply(simp add: fresh_prod)
+apply(auto)
+apply(simp add: fresh_fun_simp_AndL2 calc_atm)
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+done
+
+lemma fresh_fun_simp_OrL:
+  assumes a: "z'\<sharp>P" "z'\<sharp>M" "z'\<sharp>N" "z'\<sharp>u" "z'\<sharp>x"
+  shows "fresh_fun (\<lambda>z'. Cut <c>.P (z').OrL (x).M (u).N z') = Cut <c>.P (z').OrL (x).M (u).N z'"
+using a
+apply -
+apply(rule fresh_fun_app)
+apply(rule pt_name_inst)
+apply(rule at_name_inst)
+apply(finite_guess)
+apply(subgoal_tac "\<exists>n::name. n\<sharp>(c,P,x,M,u,N)")
+apply(erule exE)
+apply(rule_tac x="n" in exI)
+apply(simp add: fresh_prod abs_fresh)
+apply(fresh_guess)
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+apply(fresh_guess)
+done
+
+lemma fresh_fun_OrL[eqvt_force]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "pi1\<bullet>fresh_fun (\<lambda>z'. Cut <c>.P (z').OrL (x).M (u).N z')=
+             fresh_fun (pi1\<bullet>(\<lambda>z'. Cut <c>.P (z').OrL (x).M (u).N z'))"
+  and   "pi2\<bullet>fresh_fun (\<lambda>z'. Cut <c>.P (z').OrL (x).M (u).N z')=
+             fresh_fun (pi2\<bullet>(\<lambda>z'. Cut <c>.P (z').OrL (x).M (u).N z'))"
+apply -
+apply(perm_simp)
+apply(subgoal_tac "\<exists>n::name. n\<sharp>(P,M,N,x,u,pi1\<bullet>P,pi1\<bullet>M,pi1\<bullet>N,pi1\<bullet>x,pi1\<bullet>u,pi1)")
+apply(simp add: fresh_prod)
+apply(auto)
+apply(simp add: fresh_fun_simp_OrL at_prm_fresh[OF at_name_inst])
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+apply(perm_simp)
+apply(subgoal_tac "\<exists>n::name. n\<sharp>(P,M,N,x,u,pi2\<bullet>P,pi2\<bullet>M,pi2\<bullet>N,pi2\<bullet>x,pi2\<bullet>u,pi2)")
+apply(simp add: fresh_prod)
+apply(auto)
+apply(simp add: fresh_fun_simp_OrL calc_atm)
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+done
+
+lemma fresh_fun_simp_ImpL:
+  assumes a: "z'\<sharp>P" "z'\<sharp>M" "z'\<sharp>N" "z'\<sharp>x"
+  shows "fresh_fun (\<lambda>z'. Cut <c>.P (z').ImpL <a>.M (x).N z') = Cut <c>.P (z').ImpL <a>.M (x).N z'"
+using a
+apply -
+apply(rule fresh_fun_app)
+apply(rule pt_name_inst)
+apply(rule at_name_inst)
+apply(finite_guess)
+apply(subgoal_tac "\<exists>n::name. n\<sharp>(c,P,x,M,N)")
+apply(erule exE)
+apply(rule_tac x="n" in exI)
+apply(simp add: fresh_prod abs_fresh)
+apply(fresh_guess)
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+apply(fresh_guess)
+done
+
+lemma fresh_fun_ImpL[eqvt_force]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "pi1\<bullet>fresh_fun (\<lambda>z'. Cut <c>.P (z').ImpL <a>.M (x).N z')=
+             fresh_fun (pi1\<bullet>(\<lambda>z'. Cut <c>.P (z').ImpL <a>.M (x).N z'))"
+  and   "pi2\<bullet>fresh_fun (\<lambda>z'. Cut <c>.P (z').ImpL <a>.M (x).N z')=
+             fresh_fun (pi2\<bullet>(\<lambda>z'. Cut <c>.P (z').ImpL <a>.M (x).N z'))"
+apply -
+apply(perm_simp)
+apply(subgoal_tac "\<exists>n::name. n\<sharp>(P,M,N,x,pi1\<bullet>P,pi1\<bullet>M,pi1\<bullet>N,pi1\<bullet>x,pi1)")
+apply(simp add: fresh_prod)
+apply(auto)
+apply(simp add: fresh_fun_simp_ImpL at_prm_fresh[OF at_name_inst])
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+apply(perm_simp)
+apply(subgoal_tac "\<exists>n::name. n\<sharp>(P,M,N,x,pi2\<bullet>P,pi2\<bullet>M,pi2\<bullet>N,pi2\<bullet>x,pi2)")
+apply(simp add: fresh_prod)
+apply(auto)
+apply(simp add: fresh_fun_simp_ImpL calc_atm)
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+done
+
+lemma fresh_fun_simp_NotR:
+  assumes a: "a'\<sharp>P" "a'\<sharp>M"
+  shows "fresh_fun (\<lambda>a'. Cut <a'>.(NotR (y).M a') (x).P) = Cut <a'>.(NotR (y).M a') (x).P"
+using a
+apply -
+apply(rule fresh_fun_app)
+apply(rule pt_coname_inst)
+apply(rule at_coname_inst)
+apply(finite_guess)
+apply(subgoal_tac "\<exists>n::coname. n\<sharp>(x,P,y,M)")
+apply(erule exE)
+apply(rule_tac x="n" in exI)
+apply(simp add: fresh_prod abs_fresh)
+apply(fresh_guess)
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+apply(fresh_guess)
+done
+
+lemma fresh_fun_NotR[eqvt_force]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "pi1\<bullet>fresh_fun (\<lambda>a'. Cut <a'>.(NotR (y).M a') (x).P)=
+             fresh_fun (pi1\<bullet>(\<lambda>a'. Cut <a'>.(NotR (y).M a') (x).P))"
+  and   "pi2\<bullet>fresh_fun (\<lambda>a'. Cut <a'>.(NotR (y).M a') (x).P)=
+             fresh_fun (pi2\<bullet>(\<lambda>a'. Cut <a'>.(NotR (y).M a') (x).P))"
+apply -
+apply(perm_simp)
+apply(subgoal_tac "\<exists>n::coname. n\<sharp>(P,M,pi1\<bullet>P,pi1\<bullet>M,pi1)")
+apply(simp add: fresh_prod)
+apply(auto)
+apply(simp add: fresh_fun_simp_NotR calc_atm)
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+apply(perm_simp)
+apply(subgoal_tac "\<exists>n::coname. n\<sharp>(P,M,pi2\<bullet>P,pi2\<bullet>M,pi2)")
+apply(simp add: fresh_prod)
+apply(auto)
+apply(simp add: fresh_fun_simp_NotR at_prm_fresh[OF at_coname_inst])
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+done
+
+lemma fresh_fun_simp_AndR:
+  assumes a: "a'\<sharp>P" "a'\<sharp>M" "a'\<sharp>N" "a'\<sharp>b" "a'\<sharp>c"
+  shows "fresh_fun (\<lambda>a'. Cut <a'>.(AndR <b>.M <c>.N a') (x).P) = Cut <a'>.(AndR <b>.M <c>.N a') (x).P"
+using a
+apply -
+apply(rule fresh_fun_app)
+apply(rule pt_coname_inst)
+apply(rule at_coname_inst)
+apply(finite_guess)
+apply(subgoal_tac "\<exists>n::coname. n\<sharp>(x,P,b,M,c,N)")
+apply(erule exE)
+apply(rule_tac x="n" in exI)
+apply(simp add: fresh_prod abs_fresh)
+apply(fresh_guess)
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+apply(fresh_guess)
+done
+
+lemma fresh_fun_AndR[eqvt_force]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "pi1\<bullet>fresh_fun (\<lambda>a'. Cut <a'>.(AndR <b>.M <c>.N a') (x).P)=
+             fresh_fun (pi1\<bullet>(\<lambda>a'. Cut <a'>.(AndR <b>.M <c>.N a') (x).P))"
+  and   "pi2\<bullet>fresh_fun (\<lambda>a'. Cut <a'>.(AndR <b>.M <c>.N a') (x).P)=
+             fresh_fun (pi2\<bullet>(\<lambda>a'. Cut <a'>.(AndR <b>.M <c>.N a') (x).P))"
+apply -
+apply(perm_simp)
+apply(subgoal_tac "\<exists>n::coname. n\<sharp>(P,M,N,b,c,pi1\<bullet>P,pi1\<bullet>M,pi1\<bullet>N,pi1\<bullet>b,pi1\<bullet>c,pi1)")
+apply(simp add: fresh_prod)
+apply(auto)
+apply(simp add: fresh_fun_simp_AndR calc_atm)
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+apply(perm_simp)
+apply(subgoal_tac "\<exists>n::coname. n\<sharp>(P,M,N,b,c,pi2\<bullet>P,pi2\<bullet>M,pi2\<bullet>N,pi2\<bullet>b,pi2\<bullet>c,pi2)")
+apply(simp add: fresh_prod)
+apply(auto)
+apply(simp add: fresh_fun_simp_AndR at_prm_fresh[OF at_coname_inst])
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+done
+
+lemma fresh_fun_simp_OrR1:
+  assumes a: "a'\<sharp>P" "a'\<sharp>M" "a'\<sharp>b" 
+  shows "fresh_fun (\<lambda>a'. Cut <a'>.(OrR1 <b>.M a') (x).P) = Cut <a'>.(OrR1 <b>.M a') (x).P"
+using a
+apply -
+apply(rule fresh_fun_app)
+apply(rule pt_coname_inst)
+apply(rule at_coname_inst)
+apply(finite_guess)
+apply(subgoal_tac "\<exists>n::coname. n\<sharp>(x,P,b,M)")
+apply(erule exE)
+apply(rule_tac x="n" in exI)
+apply(simp add: fresh_prod abs_fresh)
+apply(fresh_guess)
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+apply(fresh_guess)
+done
+
+lemma fresh_fun_OrR1[eqvt_force]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "pi1\<bullet>fresh_fun (\<lambda>a'. Cut <a'>.(OrR1 <b>.M a') (x).P)=
+             fresh_fun (pi1\<bullet>(\<lambda>a'. Cut <a'>.(OrR1 <b>.M  a') (x).P))"
+  and   "pi2\<bullet>fresh_fun (\<lambda>a'. Cut <a'>.(OrR1 <b>.M a') (x).P)=
+             fresh_fun (pi2\<bullet>(\<lambda>a'. Cut <a'>.(OrR1 <b>.M a') (x).P))"
+apply -
+apply(perm_simp)
+apply(subgoal_tac "\<exists>n::coname. n\<sharp>(P,M,b,pi1\<bullet>P,pi1\<bullet>M,pi1\<bullet>b,pi1)")
+apply(simp add: fresh_prod)
+apply(auto)
+apply(simp add: fresh_fun_simp_OrR1 calc_atm)
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+apply(perm_simp)
+apply(subgoal_tac "\<exists>n::coname. n\<sharp>(P,M,b,pi2\<bullet>P,pi2\<bullet>M,pi2\<bullet>b,pi2)")
+apply(simp add: fresh_prod)
+apply(auto)
+apply(simp add: fresh_fun_simp_OrR1 at_prm_fresh[OF at_coname_inst])
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+done
+
+lemma fresh_fun_simp_OrR2:
+  assumes a: "a'\<sharp>P" "a'\<sharp>M" "a'\<sharp>b" 
+  shows "fresh_fun (\<lambda>a'. Cut <a'>.(OrR2 <b>.M a') (x).P) = Cut <a'>.(OrR2 <b>.M a') (x).P"
+using a
+apply -
+apply(rule fresh_fun_app)
+apply(rule pt_coname_inst)
+apply(rule at_coname_inst)
+apply(finite_guess)
+apply(subgoal_tac "\<exists>n::coname. n\<sharp>(x,P,b,M)")
+apply(erule exE)
+apply(rule_tac x="n" in exI)
+apply(simp add: fresh_prod abs_fresh)
+apply(fresh_guess)
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+apply(fresh_guess)
+done
+
+lemma fresh_fun_OrR2[eqvt_force]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "pi1\<bullet>fresh_fun (\<lambda>a'. Cut <a'>.(OrR2 <b>.M a') (x).P)=
+             fresh_fun (pi1\<bullet>(\<lambda>a'. Cut <a'>.(OrR2 <b>.M  a') (x).P))"
+  and   "pi2\<bullet>fresh_fun (\<lambda>a'. Cut <a'>.(OrR2 <b>.M a') (x).P)=
+             fresh_fun (pi2\<bullet>(\<lambda>a'. Cut <a'>.(OrR2 <b>.M a') (x).P))"
+apply -
+apply(perm_simp)
+apply(subgoal_tac "\<exists>n::coname. n\<sharp>(P,M,b,pi1\<bullet>P,pi1\<bullet>M,pi1\<bullet>b,pi1)")
+apply(simp add: fresh_prod)
+apply(auto)
+apply(simp add: fresh_fun_simp_OrR2 calc_atm)
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+apply(perm_simp)
+apply(subgoal_tac "\<exists>n::coname. n\<sharp>(P,M,b,pi2\<bullet>P,pi2\<bullet>M,pi2\<bullet>b,pi2)")
+apply(simp add: fresh_prod)
+apply(auto)
+apply(simp add: fresh_fun_simp_OrR2 at_prm_fresh[OF at_coname_inst])
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+done
+
+lemma fresh_fun_simp_ImpR:
+  assumes a: "a'\<sharp>P" "a'\<sharp>M" "a'\<sharp>b" 
+  shows "fresh_fun (\<lambda>a'. Cut <a'>.(ImpR (y).<b>.M a') (x).P) = Cut <a'>.(ImpR (y).<b>.M a') (x).P"
+using a
+apply -
+apply(rule fresh_fun_app)
+apply(rule pt_coname_inst)
+apply(rule at_coname_inst)
+apply(finite_guess)
+apply(subgoal_tac "\<exists>n::coname. n\<sharp>(x,P,y,b,M)")
+apply(erule exE)
+apply(rule_tac x="n" in exI)
+apply(simp add: fresh_prod abs_fresh)
+apply(fresh_guess)
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+apply(fresh_guess)
+done
+
+lemma fresh_fun_ImpR[eqvt_force]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "pi1\<bullet>fresh_fun (\<lambda>a'. Cut <a'>.(ImpR (y).<b>.M a') (x).P)=
+             fresh_fun (pi1\<bullet>(\<lambda>a'. Cut <a'>.(ImpR (y).<b>.M  a') (x).P))"
+  and   "pi2\<bullet>fresh_fun (\<lambda>a'. Cut <a'>.(ImpR (y).<b>.M a') (x).P)=
+             fresh_fun (pi2\<bullet>(\<lambda>a'. Cut <a'>.(ImpR (y).<b>.M a') (x).P))"
+apply -
+apply(perm_simp)
+apply(subgoal_tac "\<exists>n::coname. n\<sharp>(P,M,b,pi1\<bullet>P,pi1\<bullet>M,pi1\<bullet>b,pi1)")
+apply(simp add: fresh_prod)
+apply(auto)
+apply(simp add: fresh_fun_simp_ImpR calc_atm)
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+apply(perm_simp)
+apply(subgoal_tac "\<exists>n::coname. n\<sharp>(P,M,b,pi2\<bullet>P,pi2\<bullet>M,pi2\<bullet>b,pi2)")
+apply(simp add: fresh_prod)
+apply(auto)
+apply(simp add: fresh_fun_simp_ImpR at_prm_fresh[OF at_coname_inst])
+apply(rule exists_fresh')
+apply(simp add: fin_supp)
+done
+
 consts
-  substn :: "trm \<Rightarrow> name   \<Rightarrow> coname \<Rightarrow> trm \<Rightarrow> trm" ("_[_:=<_>._]" [100,100,100,100] 100) 
-  substc :: "trm \<Rightarrow> coname \<Rightarrow> name   \<Rightarrow> trm \<Rightarrow> trm" ("_[_:=(_)._]" [100,100,100,100] 100)
+  substn :: "trm \<Rightarrow> name   \<Rightarrow> coname \<Rightarrow> trm \<Rightarrow> trm" ("_{_:=<_>._}" [100,100,100,100] 100) 
+  substc :: "trm \<Rightarrow> coname \<Rightarrow> name   \<Rightarrow> trm \<Rightarrow> trm" ("_{_:=(_)._}" [100,100,100,100] 100)
 
 nominal_primrec (freshness_context: "(y::name,c::coname,P::trm)")
-  "(Ax x a)[y:=<c>.P] = (if x=y then P[c\<turnstile>c>a] else Ax x a)" 
-  "\<lbrakk>a\<sharp>(c,P,N);x\<sharp>(y,c,P,M)\<rbrakk> \<Longrightarrow> 
-   (Cut <a>.M (x).N)[y:=<c>.P] = Cut <a>.(M[y:=<c>.P]) (x).(N[y:=<c>.P])" 
-  "x\<sharp>(y,c,P) \<Longrightarrow> 
-   (NotR (x).M a)[y:=<c>.P] = NotR (x).(M[y:=<c>.P]) a" 
-  "a\<sharp>(c,P)\<Longrightarrow>
-   (NotL <a>.M x)[y:=<c>.P] = (if x=y then Cut <c>.P (x).(NotL <a>. (M[y:=<c>.P]) x) 
-                                      else NotL <a>. (M[y:=<c>.P]) x)" 
+  "(Ax x a){y:=<c>.P} = (if x=y then Cut <c>.P (y).Ax y a else Ax x a)" 
+  "\<lbrakk>a\<sharp>(c,P,N);x\<sharp>(y,P,M)\<rbrakk> \<Longrightarrow> (Cut <a>.M (x).N){y:=<c>.P} = 
+  (if M=Ax y a then Cut <c>.P (x).(N{y:=<c>.P}) else Cut <a>.(M{y:=<c>.P}) (x).(N{y:=<c>.P}))" 
+  "x\<sharp>(y,P) \<Longrightarrow> (NotR (x).M a){y:=<c>.P} = NotR (x).(M{y:=<c>.P}) a" 
+  "a\<sharp>(c,P) \<Longrightarrow> (NotL <a>.M x){y:=<c>.P} = 
+  (if x=y then fresh_fun (\<lambda>x'. Cut <c>.P (x').NotL <a>.(M{y:=<c>.P}) x') else NotL <a>.(M{y:=<c>.P}) x)"
   "\<lbrakk>a\<sharp>(c,P,N,d);b\<sharp>(c,P,M,d);b\<noteq>a\<rbrakk> \<Longrightarrow> 
-   (AndR <a>.M <b>.N d)[y:=<c>.P] = AndR <a>.(M[y:=<c>.P]) <b>.(N[y:=<c>.P]) d" 
-  "x\<sharp>(y,c,P,z) \<Longrightarrow> 
-   (AndL1 (x).M z)[y:=<c>.P] = (if z=y then Cut <c>.P (z).AndL1 (x).(M[y:=<c>.P]) z 
-                                       else AndL1 (x).(M[y:=<c>.P]) z)"
-  "x\<sharp>(y,c,P,z) \<Longrightarrow> 
-   (AndL2 (x).M z)[y:=<c>.P] = (if z=y then Cut <c>.P (z).AndL2 (x).(M[y:=<c>.P]) z 
-                                       else AndL2 (x).(M[y:=<c>.P]) z)"
-  "a\<sharp>(c,P,b) \<Longrightarrow> 
-   (OrR1 <a>.M b)[y:=<c>.P] = OrR1 <a>.(M[y:=<c>.P]) b"
-  "a\<sharp>(c,P,b) \<Longrightarrow> 
-   (OrR2 <a>.M b)[y:=<c>.P] = OrR2 <a>.(M[y:=<c>.P]) b"
-  "\<lbrakk>x\<sharp>(y,N,c,P,z);u\<sharp>(y,M,c,P,z);x\<noteq>u\<rbrakk> \<Longrightarrow> 
-   (OrL (x).M (u).N z)[y:=<c>.P] = (if z=y then Cut <c>.P (z).(OrL (x).(M[y:=<c>.P]) (u).(N[y:=<c>.P]) z) 
-                                           else OrL (x).(M[y:=<c>.P]) (u).(N[y:=<c>.P]) z)"
-  "\<lbrakk>a\<sharp>(b,c,P); x\<sharp>(y,c,P)\<rbrakk> \<Longrightarrow> 
-   (ImpR (x).<a>.M b)[y:=<c>.P] = ImpR (x).<a>.(M[y:=<c>.P]) b"
-  "\<lbrakk>a\<sharp>(N,c,P);x\<sharp>(y,c,P,M,z)\<rbrakk> \<Longrightarrow> 
-   (ImpL <a>.M (x).N z)[y:=<c>.P] = (if y=z then Cut <c>.P (z).(ImpL <a>.(M[y:=<c>.P]) (x).(N[y:=<c>.P]) z) 
-                                            else ImpL <a>.(M[y:=<c>.P]) (x).(N[y:=<c>.P]) z)"
+  (AndR <a>.M <b>.N d){y:=<c>.P} = AndR <a>.(M{y:=<c>.P}) <b>.(N{y:=<c>.P}) d" 
+  "x\<sharp>(y,P,z) \<Longrightarrow> (AndL1 (x).M z){y:=<c>.P} = 
+  (if z=y then fresh_fun (\<lambda>z'. Cut <c>.P (z').AndL1 (x).(M{y:=<c>.P}) z') 
+   else AndL1 (x).(M{y:=<c>.P}) z)"
+  "x\<sharp>(y,P,z) \<Longrightarrow> (AndL2 (x).M z){y:=<c>.P} = 
+  (if z=y then fresh_fun (\<lambda>z'. Cut <c>.P (z').AndL2 (x).(M{y:=<c>.P}) z') 
+   else AndL2 (x).(M{y:=<c>.P}) z)"
+  "a\<sharp>(c,P,b) \<Longrightarrow> (OrR1 <a>.M b){y:=<c>.P} = OrR1 <a>.(M{y:=<c>.P}) b"
+  "a\<sharp>(c,P,b) \<Longrightarrow> (OrR2 <a>.M b){y:=<c>.P} = OrR2 <a>.(M{y:=<c>.P}) b"
+  "\<lbrakk>x\<sharp>(y,N,P,z);u\<sharp>(y,M,P,z);x\<noteq>u\<rbrakk> \<Longrightarrow> (OrL (x).M (u).N z){y:=<c>.P} = 
+  (if z=y then fresh_fun (\<lambda>z'. Cut <c>.P (z').OrL (x).(M{y:=<c>.P}) (u).(N{y:=<c>.P}) z') 
+   else OrL (x).(M{y:=<c>.P}) (u).(N{y:=<c>.P}) z)"
+  "\<lbrakk>a\<sharp>(b,c,P); x\<sharp>(y,P)\<rbrakk> \<Longrightarrow> (ImpR (x).<a>.M b){y:=<c>.P} = ImpR (x).<a>.(M{y:=<c>.P}) b"
+  "\<lbrakk>a\<sharp>(N,c,P);x\<sharp>(y,P,M,z)\<rbrakk> \<Longrightarrow> (ImpL <a>.M (x).N z){y:=<c>.P} = 
+  (if y=z then fresh_fun (\<lambda>z'. Cut <c>.P (z').ImpL <a>.(M{y:=<c>.P}) (x).(N{y:=<c>.P}) z') 
+   else ImpL <a>.(M{y:=<c>.P}) (x).(N{y:=<c>.P}) z)"
+apply(finite_guess)+
+apply(rule TrueI)+
+apply(simp add: abs_fresh abs_supp)+
+apply(rule impI)
+apply(subgoal_tac "\<exists>x::name. x\<sharp>(x1,P,y1)", erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotL abs_fresh fresh_atm)
+apply(rule exists_fresh', simp add: fin_supp)
+apply(simp add: abs_fresh abs_supp)+
+apply(rule impI)
+apply(subgoal_tac "\<exists>x::name. x\<sharp>(x1,P,y1)", erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL1 abs_fresh fresh_atm)
+apply(rule exists_fresh', simp add: fin_supp)
+apply(simp add: abs_fresh abs_supp)+
+apply(rule impI)
+apply(subgoal_tac "\<exists>x::name. x\<sharp>(x1,P,y1)", erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL2 abs_fresh fresh_atm)
+apply(rule exists_fresh', simp add: fin_supp)
+apply(simp add: abs_fresh abs_supp)+
+apply(rule impI)
+apply(subgoal_tac "\<exists>x::name. x\<sharp>(x1,P,y1,x3,y2)", erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrL abs_fresh fresh_atm)
+apply(rule exists_fresh', simp add: fin_supp)
+apply(simp add: abs_fresh abs_supp)+
+apply(rule impI)
+apply(subgoal_tac "\<exists>x::name. x\<sharp>(x1,P,y1,x3,y2)", erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrL abs_fresh fresh_atm)
+apply(rule exists_fresh', simp add: fin_supp)
+apply(simp add: abs_fresh abs_supp)+
+apply(rule impI)
+apply(subgoal_tac "\<exists>x::name. x\<sharp>(x3,P,y1,y2)", erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpL abs_fresh fresh_atm)
+apply(rule exists_fresh', simp add: fin_supp)
+apply(simp add: abs_fresh abs_supp)+
+apply(rule impI)
+apply(subgoal_tac "\<exists>x::name. x\<sharp>(x3,P,y1,y2)", erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpL abs_fresh fresh_atm)
+apply(rule exists_fresh', simp add: fin_supp)
+apply(fresh_guess)+
+done
+
+nominal_primrec (freshness_context: "(d::name,z::coname,P::trm)")
+  "(Ax x a){d:=(z).P} = (if d=a then Cut <a>.(Ax x a) (z).P else Ax x a)" 
+  "\<lbrakk>a\<sharp>(d,P,N);x\<sharp>(z,P,M)\<rbrakk> \<Longrightarrow> (Cut <a>.M (x).N){d:=(z).P} = 
+  (if N=Ax x d then Cut <a>.(M{d:=(z).P}) (z).P else Cut <a>.(M{d:=(z).P}) (x).(N{d:=(z).P}))" 
+  "x\<sharp>(z,P) \<Longrightarrow> (NotR (x).M a){d:=(z).P} = 
+  (if d=a then fresh_fun (\<lambda>a'. Cut <a'>.NotR (x).(M{d:=(z).P}) a' (z).P) else NotR (x).(M{d:=(z).P}) a)" 
+  "a\<sharp>(d,P) \<Longrightarrow> (NotL <a>.M x){d:=(z).P} = NotL <a>.(M{d:=(z).P}) x" 
+  "\<lbrakk>a\<sharp>(P,c,N,d);b\<sharp>(P,c,M,d);b\<noteq>a\<rbrakk> \<Longrightarrow> (AndR <a>.M <b>.N c){d:=(z).P} = 
+  (if d=c then fresh_fun (\<lambda>a'. Cut <a'>.(AndR <a>.(M{d:=(z).P}) <b>.(N{d:=(z).P}) a') (z).P)
+   else AndR <a>.(M{d:=(z).P}) <b>.(N{d:=(z).P}) c)" 
+  "x\<sharp>(y,z,P) \<Longrightarrow> (AndL1 (x).M y){d:=(z).P} = AndL1 (x).(M{d:=(z).P}) y"
+  "x\<sharp>(y,P,z) \<Longrightarrow> (AndL2 (x).M y){d:=(z).P} = AndL2 (x).(M{d:=(z).P}) y"
+  "a\<sharp>(d,P,b) \<Longrightarrow> (OrR1 <a>.M b){d:=(z).P} = 
+  (if d=b then fresh_fun (\<lambda>a'. Cut <a'>.OrR1 <a>.(M{d:=(z).P}) a' (z).P) else OrR1 <a>.(M{d:=(z).P}) b)"
+  "a\<sharp>(d,P,b) \<Longrightarrow> (OrR2 <a>.M b){d:=(z).P} = 
+  (if d=b then fresh_fun (\<lambda>a'. Cut <a'>.OrR2 <a>.(M{d:=(z).P}) a' (z).P) else OrR2 <a>.(M{d:=(z).P}) b)"
+  "\<lbrakk>x\<sharp>(N,z,P,u);y\<sharp>(M,z,P,u);x\<noteq>y\<rbrakk> \<Longrightarrow> (OrL (x).M (y).N u){d:=(z).P} = 
+  OrL (x).(M{d:=(z).P}) (y).(N{d:=(z).P}) u" 
+  "\<lbrakk>a\<sharp>(b,d,P); x\<sharp>(z,P)\<rbrakk> \<Longrightarrow> (ImpR (x).<a>.M b){d:=(z).P} = 
+  (if d=b then fresh_fun (\<lambda>a'. Cut <a'>.ImpR (x).<a>.(M{d:=(z).P}) a' (z).P) 
+   else ImpR (x).<a>.(M{d:=(z).P}) b)"
+  "\<lbrakk>a\<sharp>(N,d,P);x\<sharp>(y,z,P,M)\<rbrakk> \<Longrightarrow> (ImpL <a>.M (x).N y){d:=(z).P} = 
+  ImpL <a>.(M{d:=(z).P}) (x).(N{d:=(z).P}) y"
 apply(finite_guess)+
 apply(rule TrueI)+
 apply(simp add: abs_fresh abs_supp fs_name1 fs_coname1)+
-apply(fresh_guess)+
-done
+apply(rule impI)
+apply(subgoal_tac "\<exists>x::coname. x\<sharp>(x1,P,y1)", erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotR abs_fresh fresh_atm)
+apply(rule exists_fresh', simp add: fin_supp)
+apply(simp add: abs_fresh abs_supp)+
+apply(rule impI)
+apply(subgoal_tac "\<exists>x::coname. x\<sharp>(x1,P,y1,x3,y2)", erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndR abs_fresh fresh_atm)
+apply(rule exists_fresh', simp add: fin_supp)
+apply(simp add: abs_fresh abs_supp)+
+apply(rule impI)
+apply(subgoal_tac "\<exists>x::coname. x\<sharp>(x1,P,y1,x3,y2)", erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndR abs_fresh fresh_atm)
+apply(rule exists_fresh', simp add: fin_supp)
+apply(simp add: abs_fresh abs_supp)+
+apply(rule impI)
+apply(subgoal_tac "\<exists>x::coname. x\<sharp>(x1,P,y1)", erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR1 abs_fresh fresh_atm)
+apply(rule exists_fresh', simp add: fin_supp)
+apply(simp add: abs_fresh abs_supp)+
+apply(rule impI)
+apply(subgoal_tac "\<exists>x::coname. x\<sharp>(x1,P,y1)", erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR2 abs_fresh fresh_atm)
+apply(rule exists_fresh', simp add: fin_supp)
+apply(simp add: abs_fresh abs_supp)+
+apply(rule impI)
+apply(subgoal_tac "\<exists>x::coname. x\<sharp>(x1,P,x2,y1)", erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpR abs_fresh fresh_atm abs_supp)
+apply(rule exists_fresh', simp add: fin_supp)
+apply(simp add: abs_fresh abs_supp)+
+apply(rule impI)
+apply(subgoal_tac "\<exists>x::coname. x\<sharp>(x1,P,x2,y1)", erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpR abs_fresh fresh_atm)
+apply(rule exists_fresh', simp add: fin_supp)
+apply(simp add: abs_fresh abs_supp)+
+apply(fresh_guess add: abs_fresh fresh_prod)+
+done
+
+lemma csubst_eqvt[eqvt]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "pi1\<bullet>(M{c:=(x).N}) = (pi1\<bullet>M){(pi1\<bullet>c):=(pi1\<bullet>x).(pi1\<bullet>N)}"
+  and   "pi2\<bullet>(M{c:=(x).N}) = (pi2\<bullet>M){(pi2\<bullet>c):=(pi2\<bullet>x).(pi2\<bullet>N)}"
+apply(nominal_induct M avoiding: c x N rule: trm.induct)
+apply(auto simp add: eq_bij fresh_bij eqvts)
+apply(perm_simp)+
+done
+
+lemma nsubst_eqvt[eqvt]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "pi1\<bullet>(M{x:=<c>.N}) = (pi1\<bullet>M){(pi1\<bullet>x):=<(pi1\<bullet>c)>.(pi1\<bullet>N)}"
+  and   "pi2\<bullet>(M{x:=<c>.N}) = (pi2\<bullet>M){(pi2\<bullet>x):=<(pi2\<bullet>c)>.(pi2\<bullet>N)}"
+apply(nominal_induct M avoiding: c x N rule: trm.induct)
+apply(auto simp add: eq_bij fresh_bij eqvts)
+apply(perm_simp)+
+done
+
+lemma supp_subst1:
+  shows "supp (M{y:=<c>.P}) \<subseteq> ((supp M) - {y}) \<union> (supp P)"
+apply(nominal_induct M avoiding: y P c rule: trm.induct)
+apply(auto)
+apply(auto simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)+
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(blast)+
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P,name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL1 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P,name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL1 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P,name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL1 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P,name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL2 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P,name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL2 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P,name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL2 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{y:=<c>.P},P,name1,trm2{y:=<c>.P},name2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{y:=<c>.P},P,name1,trm2{y:=<c>.P},name2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{y:=<c>.P},P,name1,trm2{y:=<c>.P},name2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{y:=<c>.P},P,name1,trm2{y:=<c>.P},name2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(blast)+
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{name2:=<c>.P},P,name1,trm2{name2:=<c>.P})")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{name2:=<c>.P},P,name1,trm2{name2:=<c>.P})")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{name2:=<c>.P},P,name1,trm2{name2:=<c>.P})")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(blast)+
+done
+
+lemma supp_subst2:
+  shows "supp (M{y:=<c>.P}) \<subseteq> supp (M) \<union> ((supp P) - {c})"
+apply(nominal_induct M avoiding: y P c rule: trm.induct)
+apply(auto)
+apply(auto simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)+
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(blast)+
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P,name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL1 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P,name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL1 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P,name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL2 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P,name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL2 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{y:=<c>.P},P,name1,trm2{y:=<c>.P},name2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{y:=<c>.P},P,name1,trm2{y:=<c>.P},name2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(blast)+
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{name2:=<c>.P},P,name1,trm2{name2:=<c>.P})")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{name2:=<c>.P},P,name1,trm2{name2:=<c>.P})")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{name2:=<c>.P},P,name1,trm2{name2:=<c>.P})")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{name2:=<c>.P},P,name1,trm2{name2:=<c>.P})")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(blast)+
+done
+
+lemma supp_subst3:
+  shows "supp (M{c:=(x).P}) \<subseteq> ((supp M) - {c}) \<union> (supp P)"
+apply(nominal_induct M avoiding: x P c rule: trm.induct)
+apply(auto)
+apply(auto simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)+
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname:=(x).P},P)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotR abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname:=(x).P},P)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotR abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm1{coname3:=(x).P},P,trm2{coname3:=(x).P},coname1,coname2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndR abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm1{coname3:=(x).P},P,trm2{coname3:=(x).P},coname1,coname2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndR abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm1{coname3:=(x).P},P,trm2{coname3:=(x).P},coname1,coname2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndR abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm1{coname3:=(x).P},P,trm2{coname3:=(x).P},coname1,coname2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndR abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(blast)+
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR1 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR1 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR1 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR2 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR2 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR2 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(blast)+
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpR abs_fresh abs_supp fin_supp fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpR abs_fresh abs_supp fin_supp fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpR abs_fresh abs_supp fin_supp fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(blast)+
+done
+
+lemma supp_subst4:
+  shows "supp (M{c:=(x).P}) \<subseteq> (supp M) \<union> ((supp P) - {x})"
+apply(nominal_induct M avoiding: x P c rule: trm.induct)
+apply(auto)
+apply(auto simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)+
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname:=(x).P},P)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotR abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname:=(x).P},P)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotR abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname:=(x).P},P)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotR abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm1{coname3:=(x).P},P,trm2{coname3:=(x).P},coname1,coname2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndR abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm1{coname3:=(x).P},P,trm2{coname3:=(x).P},coname1,coname2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndR abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(blast)+
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR1 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR1 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR2 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR2 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(blast)+
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpR abs_fresh abs_supp fin_supp fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpR abs_fresh abs_supp fin_supp fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpR abs_fresh abs_supp fin_supp fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(blast)+
+done
+
+lemma supp_subst5:
+  shows "(supp M - {y}) \<subseteq> supp (M{y:=<c>.P})"
+apply(nominal_induct M avoiding: y P c rule: trm.induct)
+apply(auto)
+apply(auto simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)+
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(blast)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P,name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL1 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P,name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL2 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{y:=<c>.P},P,name1,trm2{y:=<c>.P},name2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{y:=<c>.P},P,name1,trm2{y:=<c>.P},name2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(blast)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{name2:=<c>.P},P,name1,trm2{name2:=<c>.P})")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{name2:=<c>.P},P,name1,trm2{name2:=<c>.P})")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(blast)
+done
+
+lemma supp_subst6:
+  shows "(supp M) \<subseteq> ((supp (M{y:=<c>.P}))::coname set)"
+apply(nominal_induct M avoiding: y P c rule: trm.induct)
+apply(auto)
+apply(auto simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)+
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(blast)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P,name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL1 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P,name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL2 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{y:=<c>.P},P,name1,trm2{y:=<c>.P},name2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{y:=<c>.P},P,name1,trm2{y:=<c>.P},name2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(blast)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{name2:=<c>.P},P,name1,trm2{name2:=<c>.P})")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{name2:=<c>.P},P,name1,trm2{name2:=<c>.P})")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpL abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm)
+apply(blast)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(blast)
+done
+
+lemma supp_subst7:
+  shows "(supp M - {c}) \<subseteq>  supp (M{c:=(x).P})"
+apply(nominal_induct M avoiding: x P c rule: trm.induct)
+apply(auto)
+apply(auto simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)+
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname:=(x).P},P)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotR abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm1{coname3:=(x).P},P,trm2{coname3:=(x).P},coname1,coname2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndR abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm1{coname3:=(x).P},P,trm2{coname3:=(x).P},coname1,coname2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndR abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(blast)+
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR1 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR2 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(blast)+
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpR abs_fresh abs_supp fin_supp fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(blast)
+done
+
+lemma supp_subst8:
+  shows "(supp M) \<subseteq> ((supp (M{c:=(x).P}))::name set)"
+apply(nominal_induct M avoiding: x P c rule: trm.induct)
+apply(auto)
+apply(auto simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)+
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname:=(x).P},P)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotR abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm1{coname3:=(x).P},P,trm2{coname3:=(x).P},coname1,coname2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndR abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm1{coname3:=(x).P},P,trm2{coname3:=(x).P},coname1,coname2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndR abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(blast)+
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR1 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR2 abs_fresh fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(blast)
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpR abs_fresh abs_supp fin_supp fresh_atm)
+apply(simp add: fresh_def abs_supp trm.supp supp_atm fin_supp)
+apply(blast)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(blast)+
+done
+
+lemmas subst_supp = supp_subst1 supp_subst2 supp_subst3 supp_subst4
+                    supp_subst5 supp_subst6 supp_subst7 supp_subst8
+lemma subst_fresh:
+  fixes x::"name"
+  and   c::"coname"
+  shows "x\<sharp>P \<Longrightarrow> x\<sharp>M{x:=<c>.P}"   
+  and   "b\<sharp>P \<Longrightarrow> b\<sharp>M{b:=(y).P}"
+  and   "x\<sharp>(M,P) \<Longrightarrow> x\<sharp>M{y:=<c>.P}"
+  and   "x\<sharp>M \<Longrightarrow> x\<sharp>M{c:=(x).P}"
+  and   "x\<sharp>(M,P) \<Longrightarrow> x\<sharp>M{c:=(y).P}"
+  and   "b\<sharp>(M,P) \<Longrightarrow> b\<sharp>M{c:=(y).P}"
+  and   "b\<sharp>M \<Longrightarrow> b\<sharp>M{y:=<b>.P}"
+  and   "b\<sharp>(M,P) \<Longrightarrow> b\<sharp>M{y:=<c>.P}"
+apply -
+apply(insert subst_supp)
+apply(simp_all add: fresh_def supp_prod)
+apply(blast)+ 
+done
+
+lemma forget:
+  shows "x\<sharp>M \<Longrightarrow> M{x:=<c>.P} = M"
+  and   "c\<sharp>M \<Longrightarrow> M{c:=(x).P} = M"
+apply(nominal_induct M avoiding: x c P rule: trm.induct)
+apply(auto simp add: fresh_atm abs_fresh abs_supp fin_supp)
+done
+
+lemma substc_rename1:
+  assumes a: "c\<sharp>(M,a)"
+  shows "M{a:=(x).N} = ([(c,a)]\<bullet>M){c:=(x).N}"
+using a
+proof(nominal_induct M avoiding: c a x N rule: trm.induct)
+  case (Ax z d)
+  then show ?case by (auto simp add: fresh_prod fresh_atm calc_atm trm.inject alpha)
+next
+  case NotL
+  then show ?case by (auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod)
+next
+  case (NotR y M d)
+  then show ?case 
+    apply(auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod)
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(N,M{d:=(x).N},([(c,d)]\<bullet>M){c:=(x).N})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_NotR)
+    apply(simp add: trm.inject alpha)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    done
+next
+  case (AndR c1 M c2 M' c3)
+  then show ?case
+    apply(simp)
+    apply(auto)
+    apply(simp add: fresh_prod calc_atm fresh_atm abs_fresh)
+    apply(simp add: fresh_prod calc_atm fresh_atm abs_fresh fresh_left)
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(N,M{c3:=(x).N},
+                  M'{c3:=(x).N},c1,c2,c3,([(c,c3)]\<bullet>M){c:=(x).N},([(c,c3)]\<bullet>M'){c:=(x).N})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_AndR)
+    apply (auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh subst_fresh)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    apply(simp add: fresh_prod calc_atm fresh_atm abs_fresh fresh_left)
+    apply(simp add: fresh_prod calc_atm fresh_atm abs_fresh fresh_left)
+    apply(auto simp add: trm.inject alpha)
+    done
+next
+  case AndL1
+  then show ?case by (auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod)
+next
+  case AndL2
+  then show ?case by (auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod)
+next
+  case (OrR1 d M e)
+  then show ?case 
+    apply(auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod)
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(N,M{e:=(x).N},([(c,e)]\<bullet>M){c:=(x).N},d,e)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_OrR1)
+    apply(simp add: trm.inject alpha)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    done
+next
+  case (OrR2 d M e)
+  then show ?case 
+    apply(auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod)
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(N,M{e:=(x).N},([(c,e)]\<bullet>M){c:=(x).N},d,e)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_OrR2)
+    apply(simp add: trm.inject alpha)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    done
+next
+  case (OrL x1 M x2 M' x3)
+  then show ?case
+    by (auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+next 
+  case ImpL
+  then show ?case
+    by (auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+next
+  case (ImpR y d M e)
+  then show ?case
+    apply(auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(N,M{e:=(x).N},([(c,e)]\<bullet>M){c:=(x).N},d,e)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_ImpR)
+    apply(simp add: trm.inject alpha)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    done
+next
+  case (Cut d M y M')
+  then show ?case
+    apply(auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+    apply(drule pt_bij1[OF pt_coname_inst, OF at_coname_inst])
+    apply(simp add: calc_atm)
+    done
+qed
+
+lemma substc_rename2:
+  assumes a: "y\<sharp>(N,x)"
+  shows "M{a:=(x).N} = M{a:=(y).([(y,x)]\<bullet>N)}"
+using a
+proof(nominal_induct M avoiding: a x y N rule: trm.induct)
+  case (Ax z d)
+  then show ?case 
+    by (auto simp add: fresh_prod fresh_atm calc_atm trm.inject alpha perm_swap fresh_left)
+next
+  case NotL
+  then show ?case 
+    by (auto simp add: fresh_prod fresh_atm calc_atm trm.inject alpha perm_swap fresh_left)
+next
+  case (NotR y M d)
+  then show ?case
+    apply(auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(N,M{d:=(y).([(y,x)]\<bullet>N)},[(y,x)]\<bullet>N)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_NotR)
+    apply(simp add: trm.inject alpha perm_swap fresh_left calc_atm)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    done
+next
+  case (AndR c1 M c2 M' c3)
+  then show ?case
+    apply(auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+    apply(subgoal_tac 
+       "\<exists>a'::coname. a'\<sharp>(N,M{c3:=(y).([(y,x)]\<bullet>N)},M'{c3:=(y).([(y,x)]\<bullet>N)},[(y,x)]\<bullet>N,c1,c2,c3)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_AndR)
+    apply (auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh subst_fresh perm_swap fresh_left)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    done
+next
+  case AndL1
+  then show ?case by (auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+next
+  case AndL2
+  then show ?case by (auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+next
+  case (OrR1 d M e)
+  then show ?case 
+    apply(auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(N,M{e:=(y).([(y,x)]\<bullet>N)},[(y,x)]\<bullet>N,d,e)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_OrR1)
+    apply(simp add: trm.inject alpha perm_swap fresh_left calc_atm)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    done
+next
+  case (OrR2 d M e)
+  then show ?case
+    apply(auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(N,M{e:=(y).([(y,x)]\<bullet>N)},[(y,x)]\<bullet>N,d,e)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_OrR2)
+    apply(simp add: trm.inject alpha perm_swap fresh_left calc_atm)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    done
+next
+  case (OrL x1 M x2 M' x3)
+  then show ?case
+    by (auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+next 
+  case ImpL
+  then show ?case
+    by (auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+next
+  case (ImpR y d M e)
+  then show ?case
+    apply(auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(N,M{e:=(y).([(y,x)]\<bullet>N)},[(y,x)]\<bullet>N,d,e)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_ImpR)
+    apply(simp add: trm.inject alpha perm_swap fresh_left calc_atm)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    done
+next
+  case (Cut d M y M')
+  then show ?case
+    by (auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left perm_swap)
+qed
+
+lemma substn_rename3:
+  assumes a: "y\<sharp>(M,x)"
+  shows "M{x:=<a>.N} = ([(y,x)]\<bullet>M){y:=<a>.N}"
+using a
+proof(nominal_induct M avoiding: a x y N rule: trm.induct)
+  case (Ax z d)
+  then show ?case by (auto simp add: fresh_prod fresh_atm calc_atm trm.inject alpha)
+next
+  case NotR
+  then show ?case by (auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod)
+next
+  case (NotL d M z)
+  then show ?case 
+    apply(auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod)
+    apply(subgoal_tac "\<exists>a'::name. a'\<sharp>(N,M{x:=<a>.N},([(y,x)]\<bullet>M){y:=<a>.N})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_NotL)
+    apply(simp add: trm.inject alpha)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case (AndR c1 M c2 M' c3)
+  then show ?case
+    by (auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+next
+  case OrR1
+  then show ?case by (auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod)
+next
+  case OrR2
+  then show ?case by (auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod)
+next
+  case (AndL1 u M v)
+  then show ?case 
+    apply(auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod)
+    apply(subgoal_tac "\<exists>a'::name. a'\<sharp>(N,M{x:=<a>.N},([(y,x)]\<bullet>M){y:=<a>.N},u,v)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_AndL1)
+    apply(simp add: trm.inject alpha)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case (AndL2 u M v)
+  then show ?case 
+    apply(auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod)
+    apply(subgoal_tac "\<exists>a'::name. a'\<sharp>(N,M{x:=<a>.N},([(y,x)]\<bullet>M){y:=<a>.N},u,v)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_AndL2)
+    apply(simp add: trm.inject alpha)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case (OrL x1 M x2 M' x3)
+  then show ?case
+    apply(auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+    apply(subgoal_tac 
+    "\<exists>a'::name. a'\<sharp>(N,M{x:=<a>.N},M'{x:=<a>.N},([(y,x)]\<bullet>M){y:=<a>.N},([(y,x)]\<bullet>M'){y:=<a>.N},x1,x2)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_OrL)
+    apply(simp add: trm.inject alpha)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next 
+  case ImpR
+  then show ?case
+  by(auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_left abs_supp fin_supp fresh_prod)
+next
+  case (ImpL d M v M' u)
+  then show ?case
+    apply(auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+    apply(subgoal_tac 
+    "\<exists>a'::name. a'\<sharp>(N,M{u:=<a>.N},M'{u:=<a>.N},([(y,u)]\<bullet>M){y:=<a>.N},([(y,u)]\<bullet>M'){y:=<a>.N},d,v)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_ImpL)
+    apply(simp add: trm.inject alpha)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case (Cut d M y M')
+  then show ?case
+    apply(auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+    apply(drule pt_bij1[OF pt_name_inst, OF at_name_inst])
+    apply(simp add: calc_atm)
+    done
+qed
+
+lemma substn_rename4:
+  assumes a: "c\<sharp>(N,a)"
+  shows "M{x:=<a>.N} = M{x:=<c>.([(c,a)]\<bullet>N)}"
+using a
+proof(nominal_induct M avoiding: x c a N rule: trm.induct)
+  case (Ax z d)
+  then show ?case 
+    by (auto simp add: fresh_prod fresh_atm calc_atm trm.inject alpha perm_swap fresh_left)
+next
+  case NotR
+  then show ?case 
+    by (auto simp add: fresh_prod fresh_atm calc_atm trm.inject alpha perm_swap fresh_left)
+next
+  case (NotL d M y)
+  then show ?case
+    apply(auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+    apply(subgoal_tac "\<exists>a'::name. a'\<sharp>(N,M{x:=<c>.([(c,a)]\<bullet>N)},[(c,a)]\<bullet>N)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_NotL)
+    apply(simp add: trm.inject alpha perm_swap fresh_left calc_atm)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case (OrL x1 M x2 M' x3)
+  then show ?case
+    apply(auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+    apply(subgoal_tac 
+       "\<exists>a'::name. a'\<sharp>(N,M{x:=<c>.([(c,a)]\<bullet>N)},M'{x:=<c>.([(c,a)]\<bullet>N)},[(c,a)]\<bullet>N,x1,x2,x3)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_OrL)
+    apply (auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh subst_fresh perm_swap fresh_left)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case OrR1
+  then show ?case by (auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+next
+  case OrR2
+  then show ?case by (auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+next
+  case (AndL1 u M v)
+  then show ?case 
+    apply(auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+    apply(subgoal_tac "\<exists>a'::name. a'\<sharp>(N,M{x:=<c>.([(c,a)]\<bullet>N)},[(c,a)]\<bullet>N,u,v)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_AndL1)
+    apply(simp add: trm.inject alpha perm_swap fresh_left calc_atm)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case (AndL2 u M v)
+  then show ?case 
+    apply(auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+    apply(subgoal_tac "\<exists>a'::name. a'\<sharp>(N,M{x:=<c>.([(c,a)]\<bullet>N)},[(c,a)]\<bullet>N,u,v)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_AndL2)
+    apply(simp add: trm.inject alpha perm_swap fresh_left calc_atm)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case (AndR c1 M c2 M' c3)
+  then show ?case
+    by (auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+next 
+  case ImpR
+  then show ?case
+    by (auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+next
+  case (ImpL d M y M' u)
+  then show ?case
+    apply(auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left)
+    apply(subgoal_tac "\<exists>a'::name. a'\<sharp>(N,M{u:=<c>.([(c,a)]\<bullet>N)},M'{u:=<c>.([(c,a)]\<bullet>N)},[(c,a)]\<bullet>N,y,u)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_ImpL)
+    apply(simp add: trm.inject alpha perm_swap fresh_left calc_atm)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case (Cut d M y M')
+  then show ?case
+    by (auto simp add: calc_atm trm.inject alpha fresh_atm abs_fresh fresh_prod fresh_left perm_swap)
+qed
+
+lemma subst_rename5:
+  assumes a: "c'\<sharp>(c,N)" "x'\<sharp>(x,M)"
+  shows "M{x:=<c>.N} = ([(x',x)]\<bullet>M){x':=<c'>.([(c',c)]\<bullet>N)}"
+proof -
+  have "M{x:=<c>.N} = ([(x',x)]\<bullet>M){x':=<c>.N}" using a by (simp add: substn_rename3)
+  also have "\<dots> = ([(x',x)]\<bullet>M){x':=<c'>.([(c',c)]\<bullet>N)}" using a by (simp add: substn_rename4)
+  finally show ?thesis by simp
+qed
+
+lemma subst_rename6:
+  assumes a: "c'\<sharp>(c,M)" "x'\<sharp>(x,N)"
+  shows "M{c:=(x).N} = ([(c',c)]\<bullet>M){c':=(x').([(x',x)]\<bullet>N)}"
+proof -
+  have "M{c:=(x).N} = ([(c',c)]\<bullet>M){c':=(x).N}" using a by (simp add: substc_rename1)
+  also have "\<dots> = ([(c',c)]\<bullet>M){c':=(x').([(x',x)]\<bullet>N)}" using a by (simp add: substc_rename2)
+  finally show ?thesis by simp
+qed
+
+lemmas subst_rename = substc_rename1 substc_rename2 substn_rename3 substn_rename4 subst_rename5 subst_rename6
+
+lemma better_Cut_substn[simp]:
+  assumes a: "a\<sharp>[c].P" "x\<sharp>(y,P)"
+  shows "(Cut <a>.M (x).N){y:=<c>.P} = 
+  (if M=Ax y a then Cut <c>.P (x).(N{y:=<c>.P}) else Cut <a>.(M{y:=<c>.P}) (x).(N{y:=<c>.P}))"
+proof -   
+  obtain x'::"name"   where fs1: "x'\<sharp>(M,N,c,P,x,y)" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain a'::"coname" where fs2: "a'\<sharp>(M,N,c,P,a)" by (rule exists_fresh(2), rule fin_supp, blast)
+  have eq1: "(Cut <a>.M (x).N) = (Cut <a'>.([(a',a)]\<bullet>M) (x').([(x',x)]\<bullet>N))"
+    using fs1 fs2 by (rule_tac sym, auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  have eq2: "(M=Ax y a) = (([(a',a)]\<bullet>M)=Ax y a')"
+    apply(auto simp add: calc_atm)
+    apply(drule pt_bij1[OF pt_coname_inst, OF at_coname_inst])
+    apply(simp add: calc_atm)
+    done
+  have "(Cut <a>.M (x).N){y:=<c>.P} = (Cut <a'>.([(a',a)]\<bullet>M) (x').([(x',x)]\<bullet>N)){y:=<c>.P}" 
+    using eq1 by simp
+  also have "\<dots> = (if ([(a',a)]\<bullet>M)=Ax y a' then Cut <c>.P (x').(([(x',x)]\<bullet>N){y:=<c>.P}) 
+                              else Cut <a'>.(([(a',a)]\<bullet>M){y:=<c>.P}) (x').(([(x',x)]\<bullet>N){y:=<c>.P}))" 
+    using fs1 fs2 by (auto simp add: fresh_prod fresh_left calc_atm fresh_atm)
+  also have "\<dots> =(if M=Ax y a then Cut <c>.P (x).(N{y:=<c>.P}) else Cut <a>.(M{y:=<c>.P}) (x).(N{y:=<c>.P}))"
+    using fs1 fs2 a
+    apply -
+    apply(simp only: eq2[symmetric])
+    apply(auto simp add: trm.inject)
+    apply(simp_all add: alpha fresh_atm fresh_prod subst_fresh)
+    apply(simp_all add: eqvts perm_fresh_fresh calc_atm)
+    apply(auto)
+    apply(rule subst_rename)
+    apply(simp add: fresh_prod fresh_atm)
+    apply(simp add: abs_fresh)
+    apply(simp add: perm_fresh_fresh)
+    done
+  finally show ?thesis by simp
+qed
+    
+lemma better_Cut_substc[simp]:
+  assumes a: "a\<sharp>(c,P)" "x\<sharp>[y].P"
+  shows "(Cut <a>.M (x).N){c:=(y).P} = 
+  (if N=Ax x c then Cut <a>.(M{c:=(y).P}) (y).P else Cut <a>.(M{c:=(y).P}) (x).(N{c:=(y).P}))" 
+proof -   
+  obtain x'::"name"   where fs1: "x'\<sharp>(M,N,c,P,x,y)" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain a'::"coname" where fs2: "a'\<sharp>(M,N,c,P,a)" by (rule exists_fresh(2), rule fin_supp, blast)
+  have eq1: "(Cut <a>.M (x).N) = (Cut <a'>.([(a',a)]\<bullet>M) (x').([(x',x)]\<bullet>N))"
+    using fs1 fs2 by (rule_tac sym, auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  have eq2: "(N=Ax x c) = (([(x',x)]\<bullet>N)=Ax x' c)"
+    apply(auto simp add: calc_atm)
+    apply(drule pt_bij1[OF pt_name_inst, OF at_name_inst])
+    apply(simp add: calc_atm)
+    done
+  have "(Cut <a>.M (x).N){c:=(y).P} = (Cut <a'>.([(a',a)]\<bullet>M) (x').([(x',x)]\<bullet>N)){c:=(y).P}" 
+    using eq1 by simp
+  also have "\<dots> = (if ([(x',x)]\<bullet>N)=Ax x' c then  Cut <a'>.(([(a',a)]\<bullet>M){c:=(y).P}) (y).P
+                              else Cut <a'>.(([(a',a)]\<bullet>M){c:=(y).P}) (x').(([(x',x)]\<bullet>N){c:=(y).P}))" 
+    using fs1 fs2  by (simp add: fresh_prod fresh_left calc_atm fresh_atm trm.inject)
+  also have "\<dots> =(if N=Ax x c then Cut <a>.(M{c:=(y).P}) (y).P else Cut <a>.(M{c:=(y).P}) (x).(N{c:=(y).P}))"
+    using fs1 fs2 a
+    apply -
+    apply(simp only: eq2[symmetric])
+    apply(auto simp add: trm.inject)
+    apply(simp_all add: alpha fresh_atm fresh_prod subst_fresh)
+    apply(simp_all add: eqvts perm_fresh_fresh calc_atm)
+    apply(auto)
+    apply(rule subst_rename)
+    apply(simp add: fresh_prod fresh_atm)
+    apply(simp add: abs_fresh)
+    apply(simp add: perm_fresh_fresh)
+    done
+  finally show ?thesis by simp
+qed
+
+lemma better_Cut_substn':
+  assumes a: "a\<sharp>[c].P" "y\<sharp>(N,x)" "M\<noteq>Ax y a"
+  shows "(Cut <a>.M (x).N){y:=<c>.P} = Cut <a>.(M{y:=<c>.P}) (x).N"
+using a
+apply -
+apply(generate_fresh "name")
+apply(subgoal_tac "Cut <a>.M (x).N = Cut <a>.M (ca).([(ca,x)]\<bullet>N)")
+apply(simp)
+apply(subgoal_tac"y\<sharp>([(ca,x)]\<bullet>N)")
+apply(simp add: forget)
+apply(simp add: trm.inject)
+apply(auto simp add: fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(simp add: trm.inject)
+apply(rule sym)
+apply(simp add: alpha fresh_prod fresh_atm)
+done
+
+lemma better_NotR_substc:
+  assumes a: "d\<sharp>M"
+  shows "(NotR (x).M d){d:=(z).P} = fresh_fun (\<lambda>a'. Cut <a'>.NotR (x).M a' (z).P)"
+using a
+apply -
+apply(generate_fresh "name")
+apply(subgoal_tac "NotR (x).M d = NotR (c).([(c,x)]\<bullet>M) d")
+apply(auto simp add: fresh_left calc_atm forget)
+apply(generate_fresh "coname")
+apply(rule_tac f="fresh_fun" in arg_cong)
+apply(simp add:  expand_fun_eq)
+apply(rule allI)
+apply(simp add: trm.inject alpha fresh_prod fresh_atm)
+apply(perm_simp add: trm.inject alpha fresh_prod fresh_atm fresh_left, auto)
+done
+
+lemma better_NotL_substn:
+  assumes a: "y\<sharp>M"
+  shows "(NotL <a>.M y){y:=<c>.P} = fresh_fun (\<lambda>x'. Cut <c>.P (x').NotL <a>.M x')"
+using a
+apply -
+apply(generate_fresh "coname")
+apply(subgoal_tac "NotL <a>.M y = NotL <ca>.([(ca,a)]\<bullet>M) y")
+apply(auto simp add: fresh_left calc_atm forget)
+apply(generate_fresh "name")
+apply(rule_tac f="fresh_fun" in arg_cong)
+apply(simp add:  expand_fun_eq)
+apply(rule allI)
+apply(simp add: trm.inject alpha fresh_prod fresh_atm)
+apply(perm_simp add: trm.inject alpha fresh_prod fresh_atm fresh_left, auto)
+done
+
+lemma better_AndL1_substn:
+  assumes a: "y\<sharp>[x].M"
+  shows "(AndL1 (x).M y){y:=<c>.P} = fresh_fun (\<lambda>z'. Cut <c>.P (z').AndL1 (x).M z')"
+using a
+apply -
+apply(generate_fresh "name")
+apply(subgoal_tac "AndL1 (x).M y = AndL1 (ca).([(ca,x)]\<bullet>M) y")
+apply(auto simp add: fresh_left calc_atm forget abs_fresh)[1]
+apply(generate_fresh "name")
+apply(rule_tac f="fresh_fun" in arg_cong)
+apply(simp add:  expand_fun_eq)
+apply(rule allI)
+apply(simp add: trm.inject alpha fresh_prod fresh_atm)
+apply(rule forget)
+apply(simp add: fresh_left calc_atm)
+apply(rule_tac f="fresh_fun" in arg_cong)
+apply(simp add:  expand_fun_eq)
+apply(rule allI)
+apply(simp add: trm.inject alpha fresh_prod fresh_atm)
+apply(rule forget)
+apply(simp add: fresh_left calc_atm)
+apply(perm_simp add: trm.inject alpha fresh_left calc_atm fresh_prod fresh_atm)
+apply(auto)
+done
+
+lemma better_AndL2_substn:
+  assumes a: "y\<sharp>[x].M"
+  shows "(AndL2 (x).M y){y:=<c>.P} = fresh_fun (\<lambda>z'. Cut <c>.P (z').AndL2 (x).M z')"
+using a
+apply -
+apply(generate_fresh "name")
+apply(subgoal_tac "AndL2 (x).M y = AndL2 (ca).([(ca,x)]\<bullet>M) y")
+apply(auto simp add: fresh_left calc_atm forget abs_fresh)[1]
+apply(generate_fresh "name")
+apply(rule_tac f="fresh_fun" in arg_cong)
+apply(simp add:  expand_fun_eq)
+apply(rule allI)
+apply(simp add: trm.inject alpha fresh_prod fresh_atm)
+apply(rule forget)
+apply(simp add: fresh_left calc_atm)
+apply(rule_tac f="fresh_fun" in arg_cong)
+apply(simp add:  expand_fun_eq)
+apply(rule allI)
+apply(simp add: trm.inject alpha fresh_prod fresh_atm)
+apply(rule forget)
+apply(simp add: fresh_left calc_atm)
+apply(perm_simp add: trm.inject alpha fresh_left calc_atm fresh_prod fresh_atm)
+apply(auto)
+done
+
+lemma better_AndR_substc:
+  assumes a: "c\<sharp>([a].M,[b].N)"
+  shows "(AndR <a>.M <b>.N c){c:=(z).P} = fresh_fun (\<lambda>a'. Cut <a'>.(AndR <a>.M <b>.N a') (z).P)"
+using a
+apply -
+apply(generate_fresh "coname")
+apply(generate_fresh "coname")
+apply(subgoal_tac "AndR <a>.M <b>.N c = AndR <ca>.([(ca,a)]\<bullet>M) <caa>.([(caa,b)]\<bullet>N) c")
+apply(auto simp add: fresh_left calc_atm forget abs_fresh)[1]
+apply(rule trans)
+apply(rule substc.simps)
+apply(auto simp add: fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(auto simp add: fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(auto simp add: fresh_prod fresh_atm)[1]
+apply(simp)
+apply(rule_tac f="fresh_fun" in arg_cong)
+apply(simp add:  expand_fun_eq)
+apply(rule allI)
+apply(simp add: trm.inject alpha fresh_prod fresh_atm)
+apply(rule conjI)
+apply(rule forget)
+apply(auto simp add: fresh_left calc_atm abs_fresh)[1]
+apply(rule forget)
+apply(auto simp add: fresh_left calc_atm abs_fresh)[1]
+apply(perm_simp add: trm.inject alpha fresh_left calc_atm fresh_prod fresh_atm)
+apply(auto)
+done
+
+lemma better_OrL_substn:
+  assumes a: "x\<sharp>([y].M,[z].N)"
+  shows "(OrL (y).M (z).N x){x:=<c>.P} = fresh_fun (\<lambda>z'. Cut <c>.P (z').OrL (y).M (z).N z')"
+using a
+apply -
+apply(generate_fresh "name")
+apply(generate_fresh "name")
+apply(subgoal_tac "OrL (y).M (z).N x = OrL (ca).([(ca,y)]\<bullet>M) (caa).([(caa,z)]\<bullet>N) x")
+apply(auto simp add: fresh_left calc_atm forget abs_fresh)[1]
+apply(rule trans)
+apply(rule substn.simps)
+apply(auto simp add: fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(auto simp add: fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(auto simp add: fresh_prod fresh_atm)[1]
+apply(simp)
+apply(rule_tac f="fresh_fun" in arg_cong)
+apply(simp add:  expand_fun_eq)
+apply(rule allI)
+apply(simp add: trm.inject alpha fresh_prod fresh_atm)
+apply(rule conjI)
+apply(rule forget)
+apply(auto simp add: fresh_left calc_atm abs_fresh)[1]
+apply(rule forget)
+apply(auto simp add: fresh_left calc_atm abs_fresh)[1]
+apply(perm_simp add: trm.inject alpha fresh_left calc_atm fresh_prod fresh_atm)
+apply(auto)
+done
+
+lemma better_OrR1_substc:
+  assumes a: "d\<sharp>[a].M"
+  shows "(OrR1 <a>.M d){d:=(z).P} = fresh_fun (\<lambda>a'. Cut <a'>.OrR1 <a>.M a' (z).P)"
+using a
+apply -
+apply(generate_fresh "coname")
+apply(subgoal_tac "OrR1 <a>.M d = OrR1 <c>.([(c,a)]\<bullet>M) d")
+apply(auto simp add: fresh_left calc_atm forget abs_fresh)[1]
+apply(rule_tac f="fresh_fun" in arg_cong)
+apply(simp add:  expand_fun_eq)
+apply(rule allI)
+apply(simp add: trm.inject alpha fresh_prod fresh_atm)
+apply(rule forget)
+apply(simp add: fresh_left calc_atm)
+apply(rule_tac f="fresh_fun" in arg_cong)
+apply(simp add:  expand_fun_eq)
+apply(rule allI)
+apply(simp add: trm.inject alpha fresh_prod fresh_atm)
+apply(rule forget)
+apply(simp add: fresh_left calc_atm)
+apply(perm_simp add: trm.inject alpha fresh_left calc_atm fresh_prod fresh_atm)
+apply(auto)
+done
+
+lemma better_OrR2_substc:
+  assumes a: "d\<sharp>[a].M"
+  shows "(OrR2 <a>.M d){d:=(z).P} = fresh_fun (\<lambda>a'. Cut <a'>.OrR2 <a>.M a' (z).P)"
+using a
+apply -
+apply(generate_fresh "coname")
+apply(subgoal_tac "OrR2 <a>.M d = OrR2 <c>.([(c,a)]\<bullet>M) d")
+apply(auto simp add: fresh_left calc_atm forget abs_fresh)[1]
+apply(rule_tac f="fresh_fun" in arg_cong)
+apply(simp add:  expand_fun_eq)
+apply(rule allI)
+apply(simp add: trm.inject alpha fresh_prod fresh_atm)
+apply(rule forget)
+apply(simp add: fresh_left calc_atm)
+apply(rule_tac f="fresh_fun" in arg_cong)
+apply(simp add:  expand_fun_eq)
+apply(rule allI)
+apply(simp add: trm.inject alpha fresh_prod fresh_atm)
+apply(rule forget)
+apply(simp add: fresh_left calc_atm)
+apply(perm_simp add: trm.inject alpha fresh_left calc_atm fresh_prod fresh_atm)
+apply(auto)
+done
+
+lemma better_ImpR_substc:
+  assumes a: "d\<sharp>[a].M"
+  shows "(ImpR (x).<a>.M d){d:=(z).P} = fresh_fun (\<lambda>a'. Cut <a'>.ImpR (x).<a>.M a' (z).P)"
+using a
+apply -
+apply(generate_fresh "coname")
+apply(generate_fresh "name")
+apply(subgoal_tac "ImpR (x).<a>.M d = ImpR (ca).<c>.([(c,a)]\<bullet>[(ca,x)]\<bullet>M) d")
+apply(auto simp add: fresh_left calc_atm forget abs_fresh)[1]
+apply(rule_tac f="fresh_fun" in arg_cong)
+apply(simp add:  expand_fun_eq)
+apply(rule allI)
+apply(simp add: trm.inject alpha fresh_prod fresh_atm abs_perm abs_fresh fresh_left calc_atm)
+apply(rule forget)
+apply(simp add: fresh_left calc_atm)
+apply(rule_tac f="fresh_fun" in arg_cong)
+apply(simp add:  expand_fun_eq)
+apply(rule allI)
+apply(simp add: trm.inject alpha fresh_prod fresh_atm abs_perm fresh_left calc_atm abs_fresh)
+apply(rule forget)
+apply(simp add: fresh_left calc_atm)
+apply(rule sym)
+apply(perm_simp add: trm.inject alpha fresh_left calc_atm fresh_prod fresh_atm abs_fresh abs_perm)
+done
+
+lemma better_ImpL_substn:
+  assumes a: "y\<sharp>(M,[x].N)"
+  shows "(ImpL <a>.M (x).N y){y:=<c>.P} = fresh_fun (\<lambda>z'. Cut <c>.P (z').ImpL <a>.M (x).N z')"
+using a
+apply -
+apply(generate_fresh "coname")
+apply(generate_fresh "name")
+apply(subgoal_tac "ImpL <a>.M (x).N y = ImpL <ca>.([(ca,a)]\<bullet>M) (caa).([(caa,x)]\<bullet>N) y")
+apply(auto simp add: fresh_left calc_atm forget abs_fresh)[1]
+apply(rule_tac f="fresh_fun" in arg_cong)
+apply(simp add:  expand_fun_eq)
+apply(rule allI)
+apply(simp add: trm.inject alpha fresh_prod fresh_atm abs_perm abs_fresh fresh_left calc_atm)
+apply(rule forget)
+apply(simp add: fresh_left calc_atm)
+apply(auto)[1]
+apply(rule sym)
+apply(perm_simp add: trm.inject alpha fresh_left calc_atm fresh_prod fresh_atm abs_fresh abs_perm)
+done
+
+lemma freshn_after_substc:
+  fixes x::"name"
+  assumes a: "x\<sharp>M{c:=(y).P}"
+  shows "x\<sharp>M"
+using a supp_subst8
+apply(simp add: fresh_def)
+apply(blast)
+done
+
+lemma freshn_after_substn:
+  fixes x::"name"
+  assumes a: "x\<sharp>M{y:=<c>.P}" "x\<noteq>y"
+  shows "x\<sharp>M"
+using a
+using a supp_subst5
+apply(simp add: fresh_def)
+apply(blast)
+done
+
+lemma freshc_after_substc:
+  fixes a::"coname"
+  assumes a: "a\<sharp>M{c:=(y).P}" "a\<noteq>c"
+  shows "a\<sharp>M"
+using a supp_subst7
+apply(simp add: fresh_def)
+apply(blast)
+done
+
+lemma freshc_after_substn:
+  fixes a::"coname"
+  assumes a: "a\<sharp>M{y:=<c>.P}" 
+  shows "a\<sharp>M"
+using a supp_subst6
+apply(simp add: fresh_def)
+apply(blast)
+done
+
+lemma substn_crename_comm:
+  assumes a: "c\<noteq>a" "c\<noteq>b"
+  shows "M{x:=<c>.P}[a\<turnstile>c>b] = M[a\<turnstile>c>b]{x:=<c>.(P[a\<turnstile>c>b])}"
+using a
+apply(nominal_induct M avoiding: x c P a b rule: trm.induct)
+apply(auto simp add: subst_fresh rename_fresh trm.inject)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(P,x,c)")
+apply(erule exE)
+apply(subgoal_tac "Cut <c>.P (x).Ax x a = Cut <c>.P (x').Ax x' a")
+apply(simp)
+apply(rule trans)
+apply(rule crename.simps)
+apply(simp add: fresh_prod fresh_atm)
+apply(simp)
+apply(simp add: trm.inject)
+apply(simp add: alpha trm.inject calc_atm fresh_atm)
+apply(simp add: trm.inject)
+apply(simp add: alpha trm.inject calc_atm fresh_atm)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+apply(rule trans)
+apply(rule better_crename_Cut)
+apply(simp add: fresh_atm)
+apply(simp)
+apply(simp add: crename_id)
+apply(rule trans)
+apply(rule better_crename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh fresh_atm)
+apply(auto simp add: fresh_atm)[1]
+apply(rule trans)
+apply(rule better_crename_Cut)
+apply(simp add: fresh_atm)
+apply(auto simp add: fresh_atm)[1]
+apply(drule crename_ax)
+apply(simp add: fresh_atm)
+apply(simp add: fresh_atm)
+apply(simp)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{x:=<c>.P},P,P[a\<turnstile>c>b],x,trm[a\<turnstile>c>b]{x:=<c>.P[a\<turnstile>c>b]})")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotL)
+apply(rule trans)
+apply(rule better_crename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh fresh_atm)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{x:=<c>.P},P,P[a\<turnstile>c>b],name1,trm[a\<turnstile>c>b]{x:=<c>.P[a\<turnstile>c>b]})")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL1)
+apply(rule trans)
+apply(rule better_crename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh fresh_atm)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{x:=<c>.P},P,P[a\<turnstile>c>b],name1,trm[a\<turnstile>c>b]{x:=<c>.P[a\<turnstile>c>b]})")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL2)
+apply(rule trans)
+apply(rule better_crename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh fresh_atm)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{x:=<c>.P},trm2{x:=<c>.P},P,P[a\<turnstile>c>b],name1,name2,
+                                  trm1[a\<turnstile>c>b]{x:=<c>.P[a\<turnstile>c>b]},trm2[a\<turnstile>c>b]{x:=<c>.P[a\<turnstile>c>b]})")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrL)
+apply(rule trans)
+apply(rule better_crename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh subst_fresh fresh_atm)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{name2:=<c>.P},trm2{name2:=<c>.P},P,P[a\<turnstile>c>b],name1,
+                                  trm1[a\<turnstile>c>b]{name2:=<c>.P[a\<turnstile>c>b]},trm2[a\<turnstile>c>b]{name2:=<c>.P[a\<turnstile>c>b]})")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpL)
+apply(rule trans)
+apply(rule better_crename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh subst_fresh fresh_atm)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+done
+
+lemma substc_crename_comm:
+  assumes a: "c\<noteq>a" "c\<noteq>b"
+  shows "M{c:=(x).P}[a\<turnstile>c>b] = M[a\<turnstile>c>b]{c:=(x).(P[a\<turnstile>c>b])}"
+using a
+apply(nominal_induct M avoiding: x c P a b rule: trm.induct)
+apply(auto simp add: subst_fresh rename_fresh trm.inject)
+apply(rule trans)
+apply(rule better_crename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh fresh_atm)
+apply(rule trans)
+apply(rule better_crename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh fresh_atm)
+apply(drule crename_ax)
+apply(simp add: fresh_atm)
+apply(simp add: fresh_atm)
+apply(simp)
+apply(subgoal_tac "\<exists>c'::coname. c'\<sharp>(a,b,trm{coname:=(x).P},P,P[a\<turnstile>c>b],x,trm[a\<turnstile>c>b]{coname:=(x).P[a\<turnstile>c>b]})")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotR)
+apply(rule trans)
+apply(rule better_crename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh fresh_atm)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+apply(subgoal_tac "\<exists>c'::coname. c'\<sharp>(coname1,coname2,a,b,trm1{coname3:=(x).P},trm2{coname3:=(x).P},
+                   P,P[a\<turnstile>c>b],x,trm1[a\<turnstile>c>b]{coname3:=(x).P[a\<turnstile>c>b]},trm2[a\<turnstile>c>b]{coname3:=(x).P[a\<turnstile>c>b]})")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndR)
+apply(rule trans)
+apply(rule better_crename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh subst_fresh fresh_atm)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+apply(subgoal_tac "\<exists>c'::coname. c'\<sharp>(coname1,trm{coname2:=(x).P},P,P[a\<turnstile>c>b],a,b,
+                         trm[a\<turnstile>c>b]{coname2:=(x).P[a\<turnstile>c>b]})")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR1)
+apply(rule trans)
+apply(rule better_crename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh fresh_atm)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+apply(subgoal_tac "\<exists>c'::coname. c'\<sharp>(coname1,trm{coname2:=(x).P},P,P[a\<turnstile>c>b],a,b,
+                         trm[a\<turnstile>c>b]{coname2:=(x).P[a\<turnstile>c>b]})")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR2)
+apply(rule trans)
+apply(rule better_crename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh fresh_atm)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+apply(subgoal_tac "\<exists>c'::coname. c'\<sharp>(coname1,trm{coname2:=(x).P},P,P[a\<turnstile>c>b],a,b,
+                         trm[a\<turnstile>c>b]{coname2:=(x).P[a\<turnstile>c>b]})")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpR)
+apply(rule trans)
+apply(rule better_crename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh fresh_atm)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+done
+
+lemma substn_nrename_comm:
+  assumes a: "x\<noteq>y" "x\<noteq>z"
+  shows "M{x:=<c>.P}[y\<turnstile>n>z] = M[y\<turnstile>n>z]{x:=<c>.(P[y\<turnstile>n>z])}"
+using a
+apply(nominal_induct M avoiding: x c P y z rule: trm.induct)
+apply(auto simp add: subst_fresh rename_fresh trm.inject)
+apply(rule trans)
+apply(rule better_nrename_Cut)
+apply(simp add: fresh_prod fresh_atm)
+apply(simp add: trm.inject)
+apply(rule trans)
+apply(rule better_nrename_Cut)
+apply(simp add: fresh_atm)
+apply(simp)
+apply(drule nrename_ax)
+apply(simp add: fresh_atm)
+apply(simp add: fresh_atm)
+apply(simp)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(y,z,trm{x:=<c>.P},P,P[y\<turnstile>n>z],x,trm[y\<turnstile>n>z]{x:=<c>.P[y\<turnstile>n>z]})")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotL)
+apply(rule trans)
+apply(rule better_nrename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: fresh_atm)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{x:=<c>.P},P,P[y\<turnstile>n>z],name1,trm[y\<turnstile>n>z]{x:=<c>.P[y\<turnstile>n>z]},y,z)")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL1)
+apply(rule trans)
+apply(rule better_nrename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh fresh_atm)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(y,z,trm{x:=<c>.P},P,P[y\<turnstile>n>z],name1,trm[y\<turnstile>n>z]{x:=<c>.P[y\<turnstile>n>z]})")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL2)
+apply(rule trans)
+apply(rule better_nrename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh fresh_atm)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{x:=<c>.P},trm2{x:=<c>.P},P,P[y\<turnstile>n>z],name1,name2,y,z,
+                                  trm1[y\<turnstile>n>z]{x:=<c>.P[y\<turnstile>n>z]},trm2[y\<turnstile>n>z]{x:=<c>.P[y\<turnstile>n>z]})")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrL)
+apply(rule trans)
+apply(rule better_nrename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh subst_fresh fresh_atm)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{name2:=<c>.P},trm2{name2:=<c>.P},P,P[y\<turnstile>n>z],y,z,name1,
+                                  trm1[y\<turnstile>n>z]{name2:=<c>.P[y\<turnstile>n>z]},trm2[y\<turnstile>n>z]{name2:=<c>.P[y\<turnstile>n>z]})")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpL)
+apply(rule trans)
+apply(rule better_nrename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh subst_fresh fresh_atm)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+done
+
+lemma substc_nrename_comm:
+  assumes a: "x\<noteq>y" "x\<noteq>z"
+  shows "M{c:=(x).P}[y\<turnstile>n>z] = M[y\<turnstile>n>z]{c:=(x).(P[y\<turnstile>n>z])}"
+using a
+apply(nominal_induct M avoiding: x c P y z rule: trm.induct)
+apply(auto simp add: subst_fresh rename_fresh trm.inject)
+apply(rule trans)
+apply(rule better_nrename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh fresh_atm)
+apply(rule trans)
+apply(rule better_nrename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh fresh_atm)
+apply(rule trans)
+apply(rule better_nrename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh fresh_atm)
+apply(rule trans)
+apply(rule better_nrename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh fresh_atm)
+apply(drule nrename_ax)
+apply(simp add: fresh_atm)
+apply(simp add: fresh_atm)
+apply(simp)
+apply(rule trans)
+apply(rule better_nrename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh fresh_atm)
+apply(drule nrename_ax)
+apply(simp add: fresh_atm)
+apply(simp add: fresh_atm)
+apply(simp)
+apply(subgoal_tac "\<exists>c'::coname. c'\<sharp>(y,z,trm{coname:=(x).P},P,P[y\<turnstile>n>z],x,trm[y\<turnstile>n>z]{coname:=(x).P[y\<turnstile>n>z]})")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotR)
+apply(rule trans)
+apply(rule better_nrename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh fresh_atm)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+apply(subgoal_tac "\<exists>c'::coname. c'\<sharp>(coname1,coname2,y,z,trm1{coname3:=(x).P},trm2{coname3:=(x).P},
+                   P,P[y\<turnstile>n>z],x,trm1[y\<turnstile>n>z]{coname3:=(x).P[y\<turnstile>n>z]},trm2[y\<turnstile>n>z]{coname3:=(x).P[y\<turnstile>n>z]})")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndR)
+apply(rule trans)
+apply(rule better_nrename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh subst_fresh fresh_atm)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+apply(subgoal_tac "\<exists>c'::coname. c'\<sharp>(coname1,trm{coname2:=(x).P},P,P[y\<turnstile>n>z],y,z,
+                         trm[y\<turnstile>n>z]{coname2:=(x).P[y\<turnstile>n>z]})")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR1)
+apply(rule trans)
+apply(rule better_nrename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh fresh_atm)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+apply(subgoal_tac "\<exists>c'::coname. c'\<sharp>(coname1,trm{coname2:=(x).P},P,P[y\<turnstile>n>z],y,z,
+                         trm[y\<turnstile>n>z]{coname2:=(x).P[y\<turnstile>n>z]})")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR2)
+apply(rule trans)
+apply(rule better_nrename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh fresh_atm)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+apply(subgoal_tac "\<exists>c'::coname. c'\<sharp>(coname1,trm{coname2:=(x).P},P,P[y\<turnstile>n>z],y,z,
+                         trm[y\<turnstile>n>z]{coname2:=(x).P[y\<turnstile>n>z]})")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpR)
+apply(rule trans)
+apply(rule better_nrename_Cut)
+apply(simp add: fresh_atm fresh_prod)
+apply(simp add: rename_fresh fresh_atm)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+done
+
+lemma substn_crename_comm':
+  assumes a: "a\<noteq>c" "a\<sharp>P"
+  shows "M{x:=<c>.P}[a\<turnstile>c>b] = M[a\<turnstile>c>b]{x:=<c>.P}"
+using a
+proof -
+  assume a1: "a\<noteq>c"
+  assume a2: "a\<sharp>P"
+  obtain c'::"coname" where fs2: "c'\<sharp>(c,P,a,b)" by (rule exists_fresh(2), rule fin_supp, blast)
+  have eq: "M{x:=<c>.P} = M{x:=<c'>.([(c',c)]\<bullet>P)}"
+    using fs2
+    apply -
+    apply(rule subst_rename)
+    apply(simp)
+    done
+   have eq': "M[a\<turnstile>c>b]{x:=<c>.P} = M[a\<turnstile>c>b]{x:=<c'>.([(c',c)]\<bullet>P)}"
+    using fs2
+    apply -
+    apply(rule subst_rename)
+    apply(simp)
+    done
+  have eq2: "([(c',c)]\<bullet>P)[a\<turnstile>c>b] = ([(c',c)]\<bullet>P)" using fs2 a2 a1
+    apply -
+    apply(rule rename_fresh)
+    apply(simp add: fresh_left calc_atm fresh_prod fresh_atm)
+    done
+  have "M{x:=<c>.P}[a\<turnstile>c>b] = M{x:=<c'>.([(c',c)]\<bullet>P)}[a\<turnstile>c>b]" using eq by simp
+  also have "\<dots> = M[a\<turnstile>c>b]{x:=<c'>.(([(c',c)]\<bullet>P)[a\<turnstile>c>b])}"
+    using fs2
+    apply -
+    apply(rule substn_crename_comm)
+    apply(simp_all add: fresh_prod fresh_atm)
+    done
+  also have "\<dots> = M[a\<turnstile>c>b]{x:=<c'>.(([(c',c)]\<bullet>P))}" using eq2 by simp
+  also have "\<dots> = M[a\<turnstile>c>b]{x:=<c>.P}" using eq' by simp 
+  finally show ?thesis by simp
+qed
+
+lemma substc_crename_comm':
+  assumes a: "c\<noteq>a" "c\<noteq>b" "a\<sharp>P"
+  shows "M{c:=(x).P}[a\<turnstile>c>b] = M[a\<turnstile>c>b]{c:=(x).P}"
+using a
+proof -
+  assume a1: "c\<noteq>a"
+  assume a1': "c\<noteq>b"
+  assume a2: "a\<sharp>P"
+  obtain c'::"coname" where fs2: "c'\<sharp>(c,M,a,b)" by (rule exists_fresh(2), rule fin_supp, blast)
+  have eq: "M{c:=(x).P} = ([(c',c)]\<bullet>M){c':=(x).P}"
+    using fs2
+    apply -
+    apply(rule subst_rename)
+    apply(simp)
+    done
+   have eq': "([(c',c)]\<bullet>(M[a\<turnstile>c>b])){c':=(x).P} = M[a\<turnstile>c>b]{c:=(x).P}"
+    using fs2
+    apply -
+    apply(rule subst_rename[symmetric])
+    apply(simp add: rename_fresh)
+    done
+  have eq2: "([(c',c)]\<bullet>M)[a\<turnstile>c>b] = ([(c',c)]\<bullet>(M[a\<turnstile>c>b]))" using fs2 a2 a1 a1'
+    apply -
+    apply(simp add: rename_eqvts)
+    apply(simp add: fresh_left calc_atm fresh_prod fresh_atm)
+    done
+  have "M{c:=(x).P}[a\<turnstile>c>b] = ([(c',c)]\<bullet>M){c':=(x).P}[a\<turnstile>c>b]" using eq by simp
+  also have "\<dots> = ([(c',c)]\<bullet>M)[a\<turnstile>c>b]{c':=(x).P[a\<turnstile>c>b]}"
+    using fs2
+    apply -
+    apply(rule substc_crename_comm)
+    apply(simp_all add: fresh_prod fresh_atm)
+    done
+  also have "\<dots> = ([(c',c)]\<bullet>(M[a\<turnstile>c>b])){c':=(x).P[a\<turnstile>c>b]}" using eq2 by simp
+  also have "\<dots> = ([(c',c)]\<bullet>(M[a\<turnstile>c>b])){c':=(x).P}" using a2 by (simp add: rename_fresh)
+  also have "\<dots> = M[a\<turnstile>c>b]{c:=(x).P}" using eq' by simp
+  finally show ?thesis by simp
+qed
+
+lemma substn_nrename_comm':
+  assumes a: "x\<noteq>y" "x\<noteq>z" "y\<sharp>P"
+  shows "M{x:=<c>.P}[y\<turnstile>n>z] = M[y\<turnstile>n>z]{x:=<c>.P}"
+using a
+proof -
+  assume a1: "x\<noteq>y"
+  assume a1': "x\<noteq>z"
+  assume a2: "y\<sharp>P"
+  obtain x'::"name" where fs2: "x'\<sharp>(x,M,y,z)" by (rule exists_fresh(1), rule fin_supp, blast)
+  have eq: "M{x:=<c>.P} = ([(x',x)]\<bullet>M){x':=<c>.P}"
+    using fs2
+    apply -
+    apply(rule subst_rename)
+    apply(simp)
+    done
+   have eq': "([(x',x)]\<bullet>(M[y\<turnstile>n>z])){x':=<c>.P} = M[y\<turnstile>n>z]{x:=<c>.P}"
+    using fs2
+    apply -
+    apply(rule subst_rename[symmetric])
+    apply(simp add: rename_fresh)
+    done
+  have eq2: "([(x',x)]\<bullet>M)[y\<turnstile>n>z] = ([(x',x)]\<bullet>(M[y\<turnstile>n>z]))" using fs2 a2 a1 a1'
+    apply -
+    apply(simp add: rename_eqvts)
+    apply(simp add: fresh_left calc_atm fresh_prod fresh_atm)
+    done
+  have "M{x:=<c>.P}[y\<turnstile>n>z] = ([(x',x)]\<bullet>M){x':=<c>.P}[y\<turnstile>n>z]" using eq by simp
+  also have "\<dots> = ([(x',x)]\<bullet>M)[y\<turnstile>n>z]{x':=<c>.P[y\<turnstile>n>z]}"
+    using fs2
+    apply -
+    apply(rule substn_nrename_comm)
+    apply(simp_all add: fresh_prod fresh_atm)
+    done
+  also have "\<dots> = ([(x',x)]\<bullet>(M[y\<turnstile>n>z])){x':=<c>.P[y\<turnstile>n>z]}" using eq2 by simp
+  also have "\<dots> = ([(x',x)]\<bullet>(M[y\<turnstile>n>z])){x':=<c>.P}" using a2 by (simp add: rename_fresh)
+  also have "\<dots> = M[y\<turnstile>n>z]{x:=<c>.P}" using eq' by simp
+  finally show ?thesis by simp
+qed
+
+lemma substc_nrename_comm':
+  assumes a: "x\<noteq>y" "y\<sharp>P"
+  shows "M{c:=(x).P}[y\<turnstile>n>z] = M[y\<turnstile>n>z]{c:=(x).P}"
+using a
+proof -
+  assume a1: "x\<noteq>y"
+  assume a2: "y\<sharp>P"
+  obtain x'::"name" where fs2: "x'\<sharp>(x,P,y,z)" by (rule exists_fresh(1), rule fin_supp, blast)
+  have eq: "M{c:=(x).P} = M{c:=(x').([(x',x)]\<bullet>P)}"
+    using fs2
+    apply -
+    apply(rule subst_rename)
+    apply(simp)
+    done
+   have eq': "M[y\<turnstile>n>z]{c:=(x).P} = M[y\<turnstile>n>z]{c:=(x').([(x',x)]\<bullet>P)}"
+    using fs2
+    apply -
+    apply(rule subst_rename)
+    apply(simp)
+    done
+  have eq2: "([(x',x)]\<bullet>P)[y\<turnstile>n>z] = ([(x',x)]\<bullet>P)" using fs2 a2 a1
+    apply -
+    apply(rule rename_fresh)
+    apply(simp add: fresh_left calc_atm fresh_prod fresh_atm)
+    done
+  have "M{c:=(x).P}[y\<turnstile>n>z] = M{c:=(x').([(x',x)]\<bullet>P)}[y\<turnstile>n>z]" using eq by simp
+  also have "\<dots> = M[y\<turnstile>n>z]{c:=(x').(([(x',x)]\<bullet>P)[y\<turnstile>n>z])}"
+    using fs2
+    apply -
+    apply(rule substc_nrename_comm)
+    apply(simp_all add: fresh_prod fresh_atm)
+    done
+  also have "\<dots> = M[y\<turnstile>n>z]{c:=(x').(([(x',x)]\<bullet>P))}" using eq2 by simp
+  also have "\<dots> = M[y\<turnstile>n>z]{c:=(x).P}" using eq' by simp 
+  finally show ?thesis by simp
+qed
+
+lemmas subst_comm = substn_crename_comm substc_crename_comm
+                    substn_nrename_comm substc_nrename_comm
+lemmas subst_comm' = substn_crename_comm' substc_crename_comm'
+                     substn_nrename_comm' substc_nrename_comm'
 
 text {* typing contexts *}
 
@@ -178,7 +2916,9 @@
   validc :: "ctxtc \<Rightarrow> bool"
 where
   vc1[intro]: "validc []"
-| vc2[intro]: "\<lbrakk>a\<sharp>\<Delta>; validc \<Delta>\<rbrakk> \<Longrightarrow> validc ((a,T)#\<Delta>)"  
+| vc2[intro]: "\<lbrakk>a\<sharp>\<Delta>; validc \<Delta>\<rbrakk> \<Longrightarrow> validc ((a,T)#\<Delta>)"
+
+equivariance validc
 
 inductive2
   validn :: "ctxtn \<Rightarrow> bool"
@@ -186,101 +2926,17915 @@
   vn1[intro]: "validn []"
 | vn2[intro]: "\<lbrakk>x\<sharp>\<Gamma>; validn \<Gamma>\<rbrakk> \<Longrightarrow> validn ((x,T)#\<Gamma>)"
 
+equivariance validn
+
+lemma fresh_ctxt:
+  fixes a::"coname"
+  and   x::"name"
+  and   \<Gamma>::"ctxtn"
+  and   \<Delta>::"ctxtc"
+  shows "a\<sharp>\<Gamma>" and "x\<sharp>\<Delta>"
+proof -
+  show "a\<sharp>\<Gamma>" by (induct \<Gamma>) (auto simp add: fresh_list_nil fresh_list_cons fresh_prod fresh_atm fresh_ty)
+next
+  show "x\<sharp>\<Delta>" by (induct \<Delta>) (auto simp add: fresh_list_nil fresh_list_cons fresh_prod fresh_atm fresh_ty)
+qed
+
+text {* cut-reductions *}
+
+declare abs_perm[eqvt]
+
+inductive2
+  fin :: "trm \<Rightarrow> name \<Rightarrow> bool"
+where
+  [intro]: "fin (Ax x a) x"
+| [intro]: "x\<sharp>M \<Longrightarrow> fin (NotL <a>.M x) x"
+| [intro]: "y\<sharp>[x].M \<Longrightarrow> fin (AndL1 (x).M y) y"
+| [intro]: "y\<sharp>[x].M \<Longrightarrow> fin (AndL2 (x).M y) y"
+| [intro]: "\<lbrakk>z\<sharp>[x].M;z\<sharp>[y].N\<rbrakk> \<Longrightarrow> fin (OrL (x).M (y).N z) z"
+| [intro]: "\<lbrakk>y\<sharp>M;y\<sharp>[x].N\<rbrakk> \<Longrightarrow> fin (ImpL <a>.M (x).N y) y"
+
+equivariance fin
+
+lemma fin_Ax_elim:
+  assumes a: "fin (Ax x a) y"
+  shows "x=y"
+using a
+apply(erule_tac fin.cases)
+apply(auto simp add: trm.inject)
+done
+
+lemma fin_NotL_elim:
+  assumes a: "fin (NotL <a>.M x) y"
+  shows "x=y \<and> x\<sharp>M"
+using a
+apply(erule_tac fin.cases)
+apply(auto simp add: trm.inject)
+apply(subgoal_tac "y\<sharp>[aa].Ma")
+apply(drule sym)
+apply(simp_all add: abs_fresh)
+done
+
+lemma fin_AndL1_elim:
+  assumes a: "fin (AndL1 (x).M y) z"
+  shows "z=y \<and> z\<sharp>[x].M"
+using a
+apply(erule_tac fin.cases)
+apply(auto simp add: trm.inject)
+done
+
+lemma fin_AndL2_elim:
+  assumes a: "fin (AndL2 (x).M y) z"
+  shows "z=y \<and> z\<sharp>[x].M"
+using a
+apply(erule_tac fin.cases)
+apply(auto simp add: trm.inject)
+done
+
+lemma fin_OrL_elim:
+  assumes a: "fin (OrL (x).M (y).N u) z"
+  shows "z=u \<and> z\<sharp>[x].M \<and> z\<sharp>[y].N"
+using a
+apply(erule_tac fin.cases)
+apply(auto simp add: trm.inject)
+done
+
+lemma fin_ImpL_elim:
+  assumes a: "fin (ImpL <a>.M (x).N z) y"
+  shows "z=y \<and> z\<sharp>M \<and> z\<sharp>[x].N"
+using a
+apply(erule_tac fin.cases)
+apply(auto simp add: trm.inject)
+apply(subgoal_tac "y\<sharp>[aa].Ma")
+apply(drule sym)
+apply(simp_all add: abs_fresh)
+done
+
+lemma fin_rest_elims:
+  shows "fin (Cut <a>.M (x).N) y \<Longrightarrow> False"
+  and   "fin (NotR (x).M c) y \<Longrightarrow> False"
+  and   "fin (AndR <a>.M <b>.N c) y \<Longrightarrow> False"
+  and   "fin (OrR1 <a>.M b) y \<Longrightarrow> False"
+  and   "fin (OrR2 <a>.M b) y \<Longrightarrow> False"
+  and   "fin (ImpR (x).<a>.M b) y \<Longrightarrow> False"
+by (erule fin.cases, simp_all add: trm.inject)+
+
+lemmas fin_elims = fin_Ax_elim fin_NotL_elim fin_AndL1_elim fin_AndL2_elim fin_OrL_elim 
+                   fin_ImpL_elim fin_rest_elims
+
+lemma fin_rename:
+  shows "fin M x \<Longrightarrow> fin ([(x',x)]\<bullet>M) x'"
+by (induct rule: fin.induct)
+   (auto simp add: calc_atm simp add: fresh_left abs_fresh)
+
+lemma not_fin_subst1:
+  assumes a: "\<not>(fin M x)" 
+  shows "\<not>(fin (M{c:=(y).P}) x)"
+using a
+apply(nominal_induct M avoiding: x c y P rule: trm.induct)
+apply(auto)
+apply(drule fin_elims, simp)
+apply(drule fin_elims, simp)
+apply(drule fin_elims, simp)
+apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(trm{coname:=(y).P},P,x)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotR)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(drule fin_elims, simp)
+apply(drule fin_elims)
+apply(auto)[1]
+apply(drule freshn_after_substc)
+apply(simp add: fin.intros)
+apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(trm1{coname3:=(y).P},trm2{coname3:=(y).P},P,coname1,coname2,coname3,x)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndR)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(trm1{coname3:=(y).P},trm2{coname3:=(y).P},P,coname1,coname2,coname3,x)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndR)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(drule fin_AndL1_elim)
+apply(auto simp add: abs_fresh)[1]
+apply(drule freshn_after_substc)
+apply(subgoal_tac "name2\<sharp>[name1]. trm")
+apply(simp add: fin.intros)
+apply(simp add: abs_fresh)
+apply(drule fin_AndL2_elim)
+apply(auto simp add: abs_fresh)[1]
+apply(drule freshn_after_substc)
+apply(subgoal_tac "name2\<sharp>[name1].trm")
+apply(simp add: fin.intros)
+apply(simp add: abs_fresh)
+apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(trm{coname2:=(y).P},coname1,P,x)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR1)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(trm{coname2:=(y).P},coname1,P,x)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR2)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(drule fin_OrL_elim)
+apply(auto simp add: abs_fresh)[1]
+apply(drule freshn_after_substc)+
+apply(subgoal_tac "name3\<sharp>[name1].trm1 \<and> name3\<sharp>[name2].trm2")
+apply(simp add: fin.intros)
+apply(simp add: abs_fresh)
+apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(trm{coname2:=(y).P},coname1,P,x)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpR)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(drule fin_ImpL_elim)
+apply(auto simp add: abs_fresh)[1]
+apply(drule freshn_after_substc)+
+apply(subgoal_tac "x\<sharp>[name1].trm2")
+apply(simp add: fin.intros)
+apply(simp add: abs_fresh)
+done
+
+lemma not_fin_subst2:
+  assumes a: "\<not>(fin M x)" 
+  shows "\<not>(fin (M{y:=<c>.P}) x)"
+using a
+apply(nominal_induct M avoiding: x c y P rule: trm.induct)
+apply(auto)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(subgoal_tac "\<exists>a'::name. a'\<sharp>(trm{y:=<c>.P},P,x)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotL)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(drule fin_NotL_elim)
+apply(auto)[1]
+apply(drule freshn_after_substn)
+apply(simp)
+apply(simp add: fin.intros)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(subgoal_tac "\<exists>a'::name. a'\<sharp>(trm{y:=<c>.P},P,name1,x)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL1)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(drule fin_AndL1_elim)
+apply(auto simp add: abs_fresh)[1]
+apply(drule freshn_after_substn)
+apply(simp)
+apply(subgoal_tac "name2\<sharp>[name1]. trm")
+apply(simp add: fin.intros)
+apply(simp add: abs_fresh)
+apply(subgoal_tac "\<exists>a'::name. a'\<sharp>(trm{y:=<c>.P},P,name1,x)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL2)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(drule fin_AndL2_elim)
+apply(auto simp add: abs_fresh)[1]
+apply(drule freshn_after_substn)
+apply(simp)
+apply(subgoal_tac "name2\<sharp>[name1].trm")
+apply(simp add: fin.intros)
+apply(simp add: abs_fresh)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(subgoal_tac "\<exists>a'::name. a'\<sharp>(trm1{y:=<c>.P},trm2{y:=<c>.P},name1,name2,P,x)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrL)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(drule fin_OrL_elim)
+apply(auto simp add: abs_fresh)[1]
+apply(drule freshn_after_substn)
+apply(simp)
+apply(drule freshn_after_substn)
+apply(simp)
+apply(subgoal_tac "name3\<sharp>[name1].trm1 \<and> name3\<sharp>[name2].trm2")
+apply(simp add: fin.intros)
+apply(simp add: abs_fresh)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(subgoal_tac "\<exists>a'::name. a'\<sharp>(trm1{name2:=<c>.P},trm2{name2:=<c>.P},name1,P,x)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpL)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(drule fin_ImpL_elim)
+apply(auto simp add: abs_fresh)[1]
+apply(drule freshn_after_substn)
+apply(simp)
+apply(drule freshn_after_substn)
+apply(simp)
+apply(subgoal_tac "x\<sharp>[name1].trm2")
+apply(simp add: fin.intros)
+apply(simp add: abs_fresh)
+done
+
+lemma fin_subst1:
+  assumes a: "fin M x" "x\<noteq>y" "x\<sharp>P"
+  shows "fin (M{y:=<c>.P}) x"
+using a
+apply(nominal_induct M avoiding: x y c P rule: trm.induct)
+apply(auto dest!: fin_elims simp add: subst_fresh abs_fresh)
+apply(rule fin.intros, simp add: subst_fresh abs_fresh)
+apply(rule fin.intros, simp add: subst_fresh abs_fresh)
+apply(rule fin.intros, simp add: subst_fresh abs_fresh)
+apply(rule fin.intros, simp add: subst_fresh abs_fresh)
+apply(rule fin.intros, simp add: subst_fresh abs_fresh, simp add: subst_fresh abs_fresh)
+apply(rule fin.intros, simp add: subst_fresh abs_fresh, simp add: subst_fresh abs_fresh)
+apply(rule fin.intros, simp add: subst_fresh abs_fresh, simp add: subst_fresh abs_fresh)
+apply(rule fin.intros, simp add: subst_fresh abs_fresh, simp add: subst_fresh abs_fresh)
+apply(rule fin.intros, simp add: subst_fresh abs_fresh, simp add: subst_fresh abs_fresh)
+done
+
+lemma fin_subst2:
+  assumes a: "fin M y" "x\<noteq>y" "y\<sharp>P" "M\<noteq>Ax y c" 
+  shows "fin (M{c:=(x).P}) y"
+using a
+apply(nominal_induct M avoiding: x y c P rule: trm.induct)
+apply(drule fin_elims)
+apply(simp add: trm.inject)
+apply(rule fin.intros)
+apply(drule fin_elims, simp)
+apply(drule fin_elims, simp)
+apply(drule fin_elims, simp)
+apply(rule fin.intros)
+apply(auto)[1]
+apply(rule subst_fresh)
+apply(simp)
+apply(drule fin_elims, simp)
+apply(drule fin_elims, simp)
+apply(rule fin.intros)
+apply(simp add: abs_fresh fresh_atm)
+apply(rule subst_fresh)
+apply(auto)[1]
+apply(drule fin_elims, simp)
+apply(rule fin.intros)
+apply(simp add: abs_fresh fresh_atm)
+apply(rule subst_fresh)
+apply(auto)[1]
+apply(drule fin_elims, simp)
+apply(drule fin_elims, simp)
+apply(drule fin_elims, simp)
+apply(rule fin.intros)
+apply(simp add: abs_fresh fresh_atm)
+apply(rule subst_fresh)
+apply(auto)[1]
+apply(simp add: abs_fresh fresh_atm)
+apply(rule subst_fresh)
+apply(auto)[1]
+apply(drule fin_elims, simp)
+apply(drule fin_elims, simp)
+apply(rule fin.intros)
+apply(simp add: abs_fresh fresh_atm)
+apply(rule subst_fresh)
+apply(auto)[1]
+apply(simp add: abs_fresh fresh_atm)
+apply(rule subst_fresh)
+apply(auto)[1]
+done
+
+lemma fin_substn_nrename:
+  assumes a: "fin M x" "x\<noteq>y" "x\<sharp>P"
+  shows "M[x\<turnstile>n>y]{y:=<c>.P} = Cut <c>.P (x).(M{y:=<c>.P})"
+using a
+apply(nominal_induct M avoiding: x y c P rule: trm.induct)
+apply(drule fin_Ax_elim)
+apply(simp)
+apply(simp add: trm.inject)
+apply(simp add: alpha calc_atm fresh_atm)
+apply(simp)
+apply(drule fin_rest_elims)
+apply(simp)
+apply(drule fin_rest_elims)
+apply(simp)
+apply(drule fin_NotL_elim)
+apply(simp)
+apply(subgoal_tac "\<exists>z::name. z\<sharp>(trm,y,x,P,trm[x\<turnstile>n>y]{y:=<c>.P})")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotL)
+apply(simp add: trm.inject alpha fresh_atm calc_atm abs_fresh)
+apply(rule conjI)
+apply(simp add: nsubst_eqvt calc_atm)
+apply(simp add: perm_fresh_fresh)
+apply(simp add: nrename_fresh)
+apply(rule subst_fresh)
+apply(simp)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+apply(drule fin_rest_elims)
+apply(simp)
+apply(drule fin_AndL1_elim)
+apply(simp)
+apply(subgoal_tac "\<exists>z::name. z\<sharp>(name2,name1,P,trm[name2\<turnstile>n>y]{y:=<c>.P},y,P,trm)")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL1)
+apply(simp add: trm.inject alpha fresh_atm calc_atm abs_fresh)
+apply(rule conjI)
+apply(simp add: nsubst_eqvt calc_atm)
+apply(simp add: perm_fresh_fresh)
+apply(simp add: nrename_fresh)
+apply(rule subst_fresh)
+apply(simp)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+apply(drule fin_AndL2_elim)
+apply(simp)
+apply(subgoal_tac "\<exists>z::name. z\<sharp>(name2,name1,P,trm[name2\<turnstile>n>y]{y:=<c>.P},y,P,trm)")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL2)
+apply(simp add: trm.inject alpha fresh_atm calc_atm abs_fresh)
+apply(rule conjI)
+apply(simp add: nsubst_eqvt calc_atm)
+apply(simp add: perm_fresh_fresh)
+apply(simp add: nrename_fresh)
+apply(rule subst_fresh)
+apply(simp)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+apply(drule fin_rest_elims)
+apply(simp)
+apply(drule fin_rest_elims)
+apply(simp)
+apply(drule fin_OrL_elim)
+apply(simp add: abs_fresh)
+apply(simp add: subst_fresh rename_fresh)
+apply(subgoal_tac "\<exists>z::name. z\<sharp>(name3,name2,name1,P,trm1[name3\<turnstile>n>y]{y:=<c>.P},trm2[name3\<turnstile>n>y]{y:=<c>.P},y,P,trm1,trm2)")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrL)
+apply(simp add: trm.inject alpha fresh_atm calc_atm abs_fresh)
+apply(rule conjI)
+apply(simp add: nsubst_eqvt calc_atm)
+apply(simp add: perm_fresh_fresh)
+apply(simp add: nrename_fresh)
+apply(simp add: nsubst_eqvt calc_atm)
+apply(simp add: perm_fresh_fresh)
+apply(simp add: nrename_fresh)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+apply(drule fin_rest_elims)
+apply(simp)
+apply(drule fin_ImpL_elim)
+apply(simp add: abs_fresh)
+apply(simp add: subst_fresh rename_fresh)
+apply(subgoal_tac "\<exists>z::name. z\<sharp>(name1,x,P,trm1[x\<turnstile>n>y]{y:=<c>.P},trm2[x\<turnstile>n>y]{y:=<c>.P},y,P,trm1,trm2)")
+apply(erule exE, simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpL)
+apply(simp add: trm.inject alpha fresh_atm calc_atm abs_fresh)
+apply(rule conjI)
+apply(simp add: nsubst_eqvt calc_atm)
+apply(simp add: perm_fresh_fresh)
+apply(simp add: nrename_fresh)
+apply(simp add: nsubst_eqvt calc_atm)
+apply(simp add: perm_fresh_fresh)
+apply(simp add: nrename_fresh)
+apply(rule exists_fresh')
+apply(rule fin_supp)
+done
+
+inductive2
+  fic :: "trm \<Rightarrow> coname \<Rightarrow> bool"
+where
+  [intro]: "fic (Ax x a) a"
+| [intro]: "a\<sharp>M \<Longrightarrow> fic (NotR (x).M a) a"
+| [intro]: "\<lbrakk>c\<sharp>[a].M;c\<sharp>[b].N\<rbrakk> \<Longrightarrow> fic (AndR <a>.M <b>.N c) c"
+| [intro]: "b\<sharp>[a].M \<Longrightarrow> fic (OrR1 <a>.M b) b"
+| [intro]: "b\<sharp>[a].M \<Longrightarrow> fic (OrR2 <a>.M b) b"
+| [intro]: "\<lbrakk>b\<sharp>[a].M\<rbrakk> \<Longrightarrow> fic (ImpR (x).<a>.M b) b"
+
+equivariance fic
+
+lemma fic_Ax_elim:
+  assumes a: "fic (Ax x a) b"
+  shows "a=b"
+using a
+apply(erule_tac fic.cases)
+apply(auto simp add: trm.inject)
+done
+
+lemma fic_NotR_elim:
+  assumes a: "fic (NotR (x).M a) b"
+  shows "a=b \<and> b\<sharp>M"
+using a
+apply(erule_tac fic.cases)
+apply(auto simp add: trm.inject)
+apply(subgoal_tac "b\<sharp>[xa].Ma")
+apply(drule sym)
+apply(simp_all add: abs_fresh)
+done
+
+lemma fic_OrR1_elim:
+  assumes a: "fic (OrR1 <a>.M b) c"
+  shows "b=c \<and> c\<sharp>[a].M"
+using a
+apply(erule_tac fic.cases)
+apply(auto simp add: trm.inject)
+done
+
+lemma fic_OrR2_elim:
+  assumes a: "fic (OrR2 <a>.M b) c"
+  shows "b=c \<and> c\<sharp>[a].M"
+using a
+apply(erule_tac fic.cases)
+apply(auto simp add: trm.inject)
+done
+
+lemma fic_AndR_elim:
+  assumes a: "fic (AndR <a>.M <b>.N c) d"
+  shows "c=d \<and> d\<sharp>[a].M \<and> d\<sharp>[b].N"
+using a
+apply(erule_tac fic.cases)
+apply(auto simp add: trm.inject)
+done
+
+lemma fic_ImpR_elim:
+  assumes a: "fic (ImpR (x).<a>.M b) c"
+  shows "b=c \<and> b\<sharp>[a].M"
+using a
+apply(erule_tac fic.cases)
+apply(auto simp add: trm.inject)
+apply(subgoal_tac "c\<sharp>[xa].[aa].Ma")
+apply(drule sym)
+apply(simp_all add: abs_fresh)
+done
+
+lemma fic_rest_elims:
+  shows "fic (Cut <a>.M (x).N) d \<Longrightarrow> False"
+  and   "fic (NotL <a>.M x) d \<Longrightarrow> False"
+  and   "fic (OrL (x).M (y).N z) d \<Longrightarrow> False"
+  and   "fic (AndL1 (x).M y) d \<Longrightarrow> False"
+  and   "fic (AndL2 (x).M y) d \<Longrightarrow> False"
+  and   "fic (ImpL <a>.M (x).N y) d \<Longrightarrow> False"
+by (erule fic.cases, simp_all add: trm.inject)+
+
+lemmas fic_elims = fic_Ax_elim fic_NotR_elim fic_OrR1_elim fic_OrR2_elim fic_AndR_elim 
+                   fic_ImpR_elim fic_rest_elims
+
+lemma fic_rename:
+  shows "fic M a \<Longrightarrow> fic ([(a',a)]\<bullet>M) a'"
+by (induct rule: fic.induct)
+   (auto simp add: calc_atm simp add: fresh_left abs_fresh)
+
+lemma not_fic_subst1:
+  assumes a: "\<not>(fic M a)" 
+  shows "\<not>(fic (M{y:=<c>.P}) a)"
+using a
+apply(nominal_induct M avoiding: a c y P rule: trm.induct)
+apply(auto)
+apply(drule fic_elims, simp)
+apply(drule fic_elims, simp)
+apply(drule fic_elims, simp)
+apply(drule fic_elims)
+apply(auto)[1]
+apply(drule freshc_after_substn)
+apply(simp add: fic.intros)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P,a)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotL)
+apply(drule fic_elims, simp)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(drule fic_elims, simp)
+apply(drule fic_elims)
+apply(auto)[1]
+apply(simp add: abs_fresh fresh_atm)
+apply(drule freshc_after_substn)
+apply(drule freshc_after_substn)
+apply(simp add: fic.intros abs_fresh)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P,name1,a)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL1)
+apply(drule fic_elims, simp)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(drule fic_elims, simp)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{y:=<c>.P},P,name1,a)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL2)
+apply(drule fic_elims, simp)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(drule fic_elims, simp)
+apply(drule fic_elims)
+apply(auto)[1]
+apply(simp add: abs_fresh fresh_atm)
+apply(drule freshc_after_substn)
+apply(simp add: fic.intros abs_fresh)
+apply(drule fic_elims)
+apply(auto)[1]
+apply(simp add: abs_fresh fresh_atm)
+apply(drule freshc_after_substn)
+apply(simp add: fic.intros abs_fresh)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{y:=<c>.P},trm2{y:=<c>.P},P,name1,name2,a)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrL)
+apply(drule fic_elims, simp)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(drule fic_elims, simp)
+apply(drule fic_elims, simp)
+apply(auto)[1]
+apply(simp add: abs_fresh fresh_atm)
+apply(drule freshc_after_substn)
+apply(simp add: fic.intros abs_fresh)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{name2:=<c>.P},trm2{name2:=<c>.P},P,name1,name2,a)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpL)
+apply(drule fic_elims, simp)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(drule fic_elims, simp)
+done
+
+lemma not_fic_subst2:
+  assumes a: "\<not>(fic M a)" 
+  shows "\<not>(fic (M{c:=(y).P}) a)"
+using a
+apply(nominal_induct M avoiding: a c y P rule: trm.induct)
+apply(auto)
+apply(drule fic_elims, simp)
+apply(drule fic_elims, simp)
+apply(drule fic_elims, simp)
+apply(subgoal_tac "\<exists>c'::coname. c'\<sharp>(trm{coname:=(y).P},P,a)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotR)
+apply(drule fic_elims, simp)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(drule fic_elims, simp)
+apply(erule conjE)+
+apply(drule freshc_after_substc)
+apply(simp)
+apply(simp add: fic.intros abs_fresh)
+apply(drule fic_elims, simp)
+apply(subgoal_tac "\<exists>c'::coname. c'\<sharp>(trm1{coname3:=(y).P},trm2{coname3:=(y).P},P,coname1,coname2,a)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndR)
+apply(drule fic_elims, simp)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(drule fic_elims, simp)
+apply(auto)[1]
+apply(simp add: abs_fresh fresh_atm)
+apply(drule freshc_after_substc)
+apply(simp)
+apply(drule freshc_after_substc)
+apply(simp)
+apply(simp add: fic.intros abs_fresh)
+apply(drule fic_elims, simp)
+apply(drule fic_elims, simp)
+apply(subgoal_tac "\<exists>c'::coname. c'\<sharp>(trm{coname2:=(y).P},P,coname1,a)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR1)
+apply(drule fic_elims, simp)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(drule fic_elims, simp)
+apply(auto)[1]
+apply(simp add: abs_fresh fresh_atm)
+apply(drule freshc_after_substc)
+apply(simp)
+apply(simp add: fic.intros abs_fresh)
+apply(subgoal_tac "\<exists>c'::coname. c'\<sharp>(trm{coname2:=(y).P},P,coname1,a)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR2)
+apply(drule fic_elims, simp)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(drule fic_elims, simp)
+apply(auto)[1]
+apply(simp add: abs_fresh fresh_atm)
+apply(drule freshc_after_substc)
+apply(simp)
+apply(simp add: fic.intros abs_fresh)
+apply(drule fic_elims, simp)
+apply(subgoal_tac "\<exists>c'::coname. c'\<sharp>(trm{coname2:=(y).P},P,coname1,a)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpR)
+apply(drule fic_elims, simp)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(drule fic_elims, simp)
+apply(auto)[1]
+apply(simp add: abs_fresh fresh_atm)
+apply(drule freshc_after_substc)
+apply(simp)
+apply(simp add: fic.intros abs_fresh)
+apply(drule fic_elims, simp)
+done
+
+lemma fic_subst1:
+  assumes a: "fic M a" "a\<noteq>b" "a\<sharp>P"
+  shows "fic (M{b:=(x).P}) a"
+using a
+apply(nominal_induct M avoiding: x b a P rule: trm.induct)
+apply(drule fic_elims)
+apply(simp add: fic.intros)
+apply(drule fic_elims, simp)
+apply(drule fic_elims, simp)
+apply(rule fic.intros)
+apply(auto)[1]
+apply(rule subst_fresh)
+apply(simp)
+apply(drule fic_elims, simp)
+apply(drule fic_elims, simp)
+apply(rule fic.intros)
+apply(simp add: abs_fresh fresh_atm)
+apply(rule subst_fresh)
+apply(auto)[1]
+apply(simp add: abs_fresh fresh_atm)
+apply(rule subst_fresh)
+apply(auto)[1]
+apply(drule fic_elims, simp)
+apply(drule fic_elims, simp)
+apply(drule fic_elims, simp)
+apply(rule fic.intros)
+apply(simp add: abs_fresh fresh_atm)
+apply(rule subst_fresh)
+apply(auto)[1]
+apply(drule fic_elims, simp)
+apply(rule fic.intros)
+apply(simp add: abs_fresh fresh_atm)
+apply(rule subst_fresh)
+apply(auto)[1]
+apply(drule fic_elims, simp)
+apply(drule fic_elims, simp)
+apply(rule fic.intros)
+apply(simp add: abs_fresh fresh_atm)
+apply(rule subst_fresh)
+apply(auto)[1]
+apply(drule fic_elims, simp)
+done
+
+lemma fic_subst2:
+  assumes a: "fic M a" "c\<noteq>a" "a\<sharp>P" "M\<noteq>Ax x a" 
+  shows "fic (M{x:=<c>.P}) a"
+using a
+apply(nominal_induct M avoiding: x a c P rule: trm.induct)
+apply(drule fic_elims)
+apply(simp add: trm.inject)
+apply(rule fic.intros)
+apply(drule fic_elims, simp)
+apply(drule fic_elims, simp)
+apply(rule fic.intros)
+apply(auto)[1]
+apply(rule subst_fresh)
+apply(simp)
+apply(drule fic_elims, simp)
+apply(drule fic_elims, simp)
+apply(rule fic.intros)
+apply(simp add: abs_fresh fresh_atm)
+apply(rule subst_fresh)
+apply(auto)[1]
+apply(simp add: abs_fresh fresh_atm)
+apply(rule subst_fresh)
+apply(auto)[1]
+apply(drule fic_elims, simp)
+apply(drule fic_elims, simp)
+apply(drule fic_elims, simp)
+apply(rule fic.intros)
+apply(simp add: abs_fresh fresh_atm)
+apply(rule subst_fresh)
+apply(auto)[1]
+apply(drule fic_elims, simp)
+apply(rule fic.intros)
+apply(simp add: abs_fresh fresh_atm)
+apply(rule subst_fresh)
+apply(auto)[1]
+apply(drule fic_elims, simp)
+apply(drule fic_elims, simp)
+apply(rule fic.intros)
+apply(simp add: abs_fresh fresh_atm)
+apply(rule subst_fresh)
+apply(auto)[1]
+apply(drule fic_elims, simp)
+done
+
+lemma fic_substc_crename:
+  assumes a: "fic M a" "a\<noteq>b" "a\<sharp>P"
+  shows "M[a\<turnstile>c>b]{b:=(y).P} = Cut <a>.(M{b:=(y).P}) (y).P"
+using a
+apply(nominal_induct M avoiding: a b  y P rule: trm.induct)
+apply(drule fic_Ax_elim)
+apply(simp)
+apply(simp add: trm.inject)
+apply(simp add: alpha calc_atm fresh_atm trm.inject)
+apply(simp)
+apply(drule fic_rest_elims)
+apply(simp)
+apply(drule fic_NotR_elim)
+apply(simp)
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(simp add: trm.inject alpha fresh_atm fresh_prod fresh_atm calc_atm abs_fresh)
+apply(rule conjI)
+apply(simp add: csubst_eqvt calc_atm)
+apply(simp add: perm_fresh_fresh)
+apply(simp add: crename_fresh)
+apply(rule subst_fresh)
+apply(simp)
+apply(drule fic_rest_elims)
+apply(simp)
+apply(drule fic_AndR_elim)
+apply(simp add: abs_fresh fresh_atm subst_fresh rename_fresh)
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(simp add: trm.inject alpha fresh_atm calc_atm abs_fresh fresh_prod)
+apply(rule conjI)
+apply(simp add: csubst_eqvt calc_atm)
+apply(simp add: perm_fresh_fresh)
+apply(simp add: csubst_eqvt calc_atm)
+apply(simp add: perm_fresh_fresh)
+apply(simp add: subst_fresh)
+apply(drule fic_rest_elims)
+apply(simp)
+apply(drule fic_rest_elims)
+apply(simp)
+apply(drule fic_OrR1_elim)
+apply(simp)
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(simp add: trm.inject alpha fresh_atm calc_atm abs_fresh fresh_prod)
+apply(simp add: csubst_eqvt calc_atm)
+apply(simp add: perm_fresh_fresh)
+apply(simp add: subst_fresh rename_fresh)
+apply(drule fic_OrR2_elim)
+apply(simp add: abs_fresh fresh_atm)
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(simp add: trm.inject alpha fresh_atm calc_atm abs_fresh fresh_prod)
+apply(simp add: csubst_eqvt calc_atm)
+apply(simp add: perm_fresh_fresh)
+apply(simp add: subst_fresh rename_fresh)
+apply(drule fic_rest_elims)
+apply(simp)
+apply(drule fic_ImpR_elim)
+apply(simp add: abs_fresh fresh_atm)
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(simp add: trm.inject alpha fresh_atm calc_atm abs_fresh fresh_prod)
+apply(simp add: csubst_eqvt calc_atm)
+apply(simp add: perm_fresh_fresh)
+apply(simp add: subst_fresh rename_fresh)
+apply(drule fic_rest_elims)
+apply(simp)
+done
+
+inductive2
+  l_redu :: "trm \<Rightarrow> trm \<Rightarrow> bool" ("_ \<longrightarrow>\<^isub>l _" [100,100] 100)
+where
+  LAxR:  "\<lbrakk>x\<sharp>M; a\<sharp>b; fic M a\<rbrakk> \<Longrightarrow> Cut <a>.M (x).(Ax x b) \<longrightarrow>\<^isub>l M[a\<turnstile>c>b]"
+| LAxL:  "\<lbrakk>a\<sharp>M; x\<sharp>y; fin M x\<rbrakk> \<Longrightarrow> Cut <a>.(Ax y a) (x).M \<longrightarrow>\<^isub>l M[x\<turnstile>n>y]"
+| LNot:  "\<lbrakk>y\<sharp>(M,N); x\<sharp>(N,y); a\<sharp>(M,N,b); b\<sharp>M; y\<noteq>x; b\<noteq>a\<rbrakk> \<Longrightarrow>
+          Cut <a>.(NotR (x).M a) (y).(NotL <b>.N y) \<longrightarrow>\<^isub>l Cut <b>.N (x).M" 
+| LAnd1: "\<lbrakk>b\<sharp>([a1].M1,[a2].M2,N,a1,a2); y\<sharp>([x].N,M1,M2,x); x\<sharp>(M1,M2); a1\<sharp>(M2,N); a2\<sharp>(M1,N); a1\<noteq>a2\<rbrakk> \<Longrightarrow>
+          Cut <b>.(AndR <a1>.M1 <a2>.M2 b) (y).(AndL1 (x).N y) \<longrightarrow>\<^isub>l Cut <a1>.M1 (x).N"
+| LAnd2: "\<lbrakk>b\<sharp>([a1].M1,[a2].M2,N,a1,a2); y\<sharp>([x].N,M1,M2,x); x\<sharp>(M1,M2); a1\<sharp>(M2,N); a2\<sharp>(M1,N); a1\<noteq>a2\<rbrakk> \<Longrightarrow>
+          Cut <b>.(AndR <a1>.M1 <a2>.M2 b) (y).(AndL2 (x).N y) \<longrightarrow>\<^isub>l Cut <a2>.M2 (x).N"
+| LOr1:  "\<lbrakk>b\<sharp>([a].M,N1,N2,a); y\<sharp>([x1].N1,[x2].N2,M,x1,x2); x1\<sharp>(M,N2); x2\<sharp>(M,N1); a\<sharp>(N1,N2); x1\<noteq>x2\<rbrakk> \<Longrightarrow>
+          Cut <b>.(OrR1 <a>.M b) (y).(OrL (x1).N1 (x2).N2 y) \<longrightarrow>\<^isub>l Cut <a>.M (x1).N1"
+| LOr2:  "\<lbrakk>b\<sharp>([a].M,N1,N2,a); y\<sharp>([x1].N1,[x2].N2,M,x1,x2); x1\<sharp>(M,N2); x2\<sharp>(M,N1); a\<sharp>(N1,N2); x1\<noteq>x2\<rbrakk> \<Longrightarrow>
+          Cut <b>.(OrR2 <a>.M b) (y).(OrL (x1).N1 (x2).N2 y) \<longrightarrow>\<^isub>l Cut <a>.M (x2).N2"
+| LImp:  "\<lbrakk>z\<sharp>(N,[y].P,[x].M,y,x); b\<sharp>([a].M,[c].N,P,c,a); x\<sharp>(N,[y].P,y); 
+          c\<sharp>(P,[a].M,b,a); a\<sharp>([c].N,P); y\<sharp>(N,[x].M)\<rbrakk> \<Longrightarrow>
+          Cut <b>.(ImpR (x).<a>.M b) (z).(ImpL <c>.N (y).P z) \<longrightarrow>\<^isub>l Cut <a>.(Cut <c>.N (x).M) (y).P"
+
+equivariance l_redu
+
+lemma l_redu_eqvt':
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "(pi1\<bullet>M) \<longrightarrow>\<^isub>l (pi1\<bullet>M') \<Longrightarrow> M \<longrightarrow>\<^isub>l M'"
+  and   "(pi2\<bullet>M) \<longrightarrow>\<^isub>l (pi2\<bullet>M') \<Longrightarrow> M \<longrightarrow>\<^isub>l M'"
+apply -
+apply(drule_tac pi="rev pi1" in l_redu.eqvt(1))
+apply(perm_simp)
+apply(drule_tac pi="rev pi2" in l_redu.eqvt(2))
+apply(perm_simp)
+done
+
+nominal_inductive l_redu
+  apply(simp_all add: abs_fresh fresh_atm rename_fresh fresh_prod abs_supp fin_supp)
+  apply(force)+
+  done
+
+lemma fresh_l_redu:
+  fixes x::"name"
+  and   a::"coname"
+  shows "M \<longrightarrow>\<^isub>l M' \<Longrightarrow> x\<sharp>M \<Longrightarrow> x\<sharp>M'"
+  and   "M \<longrightarrow>\<^isub>l M' \<Longrightarrow> a\<sharp>M \<Longrightarrow> a\<sharp>M'"
+apply -
+apply(induct rule: l_redu.induct)
+apply(auto simp add: abs_fresh rename_fresh)
+apply(case_tac "xa=x")
+apply(simp add: rename_fresh)
+apply(simp add: rename_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp)+
+apply(induct rule: l_redu.induct)
+apply(auto simp add: abs_fresh rename_fresh)
+apply(case_tac "aa=a")
+apply(simp add: rename_fresh)
+apply(simp add: rename_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp)+
+done
+
+lemma better_LAxR_intro[intro]:
+  shows "fic M a \<Longrightarrow> Cut <a>.M (x).(Ax x b) \<longrightarrow>\<^isub>l M[a\<turnstile>c>b]"
+proof -
+  assume fin: "fic M a"
+  obtain x'::"name" where fs1: "x'\<sharp>(M,x)" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain a'::"coname" where fs2: "a'\<sharp>(a,M,b)" by (rule exists_fresh(2), rule fin_supp, blast)
+  have "Cut <a>.M (x).(Ax x b) =  Cut <a'>.([(a',a)]\<bullet>M) (x').(Ax x' b)"
+    using fs1 fs2 by (rule_tac sym, auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  also have "\<dots> \<longrightarrow>\<^isub>l ([(a',a)]\<bullet>M)[a'\<turnstile>c>b]" using fs1 fs2 fin
+    by (auto intro: l_redu.intros simp add: fresh_left calc_atm fic_rename)
+  also have "\<dots> = M[a\<turnstile>c>b]" using fs1 fs2 by (simp add: crename_rename)
+  finally show ?thesis by simp
+qed
+    
+lemma better_LAxL_intro[intro]:
+  shows "fin M x \<Longrightarrow> Cut <a>.(Ax y a) (x).M \<longrightarrow>\<^isub>l M[x\<turnstile>n>y]"
+proof -
+  assume fin: "fin M x"
+  obtain x'::"name" where fs1: "x'\<sharp>(y,M,x)" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain a'::"coname" where fs2: "a'\<sharp>(a,M)" by (rule exists_fresh(2), rule fin_supp, blast)
+  have "Cut <a>.(Ax y a) (x).M = Cut <a'>.(Ax y a') (x').([(x',x)]\<bullet>M)"
+    using fs1 fs2 by (rule_tac sym, auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  also have "\<dots> \<longrightarrow>\<^isub>l ([(x',x)]\<bullet>M)[x'\<turnstile>n>y]" using fs1 fs2 fin
+    by (auto intro: l_redu.intros simp add: fresh_left calc_atm fin_rename)
+  also have "\<dots> = M[x\<turnstile>n>y]" using fs1 fs2 by (simp add: nrename_rename)
+  finally show ?thesis by simp
+qed
+
+lemma better_LNot_intro[intro]:
+  shows "\<lbrakk>y\<sharp>N; a\<sharp>M\<rbrakk> \<Longrightarrow> Cut <a>.(NotR (x).M a) (y).(NotL <b>.N y) \<longrightarrow>\<^isub>l Cut <b>.N (x).M"
+proof -
+  assume fs: "y\<sharp>N" "a\<sharp>M"
+  obtain x'::"name" where f1: "x'\<sharp>(y,N,M,x)" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain y'::"name" where f2: "y'\<sharp>(y,N,M,x,x')" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain a'::"coname" where f3: "a'\<sharp>(a,M,N,b)" by (rule exists_fresh(2), rule fin_supp, blast)
+  obtain b'::"coname" where f4: "b'\<sharp>(a,M,N,b,a')" by (rule exists_fresh(2), rule fin_supp, blast)
+  have "Cut <a>.(NotR (x).M a) (y).(NotL <b>.N y) 
+                      = Cut <a'>.(NotR (x).([(a',a)]\<bullet>M) a') (y').(NotL <b>.([(y',y)]\<bullet>N) y')"
+    using f1 f2 f3 f4 
+    by (rule_tac sym, auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm abs_fresh)
+  also have "\<dots> = Cut <a'>.(NotR (x).M a') (y').(NotL <b>.N y')"
+    using f1 f2 f3 f4 fs by (perm_simp)
+  also have "\<dots> = Cut <a'>.(NotR (x').([(x',x)]\<bullet>M) a') (y').(NotL <b'>.([(b',b)]\<bullet>N) y')"
+    using f1 f2 f3 f4 
+    by (rule_tac sym, auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  also have "\<dots> \<longrightarrow>\<^isub>l Cut <b'>.([(b',b)]\<bullet>N) (x').([(x',x)]\<bullet>M)"
+    using f1 f2 f3 f4 fs
+    by (auto intro:  l_redu.intros simp add: fresh_prod fresh_left calc_atm fresh_atm)
+  also have "\<dots> = Cut <b>.N (x).M"
+    using f1 f2 f3 f4 by (auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  finally show ?thesis by simp
+qed 
+
+lemma better_LAnd1_intro[intro]:
+  shows "\<lbrakk>a\<sharp>([b1].M1,[b2].M2); y\<sharp>[x].N\<rbrakk> 
+         \<Longrightarrow> Cut <a>.(AndR <b1>.M1 <b2>.M2 a) (y).(AndL1 (x).N y) \<longrightarrow>\<^isub>l Cut <b1>.M1 (x).N"
+proof -
+  assume fs: "a\<sharp>([b1].M1,[b2].M2)" "y\<sharp>[x].N"
+  obtain x'::"name" where f1: "x'\<sharp>(y,N,M1,M2,x)" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain y'::"name" where f2: "y'\<sharp>(y,N,M1,M2,x,x')" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain a'::"coname" where f3: "a'\<sharp>(a,M1,M2,N,b1,b2)" by (rule exists_fresh(2), rule fin_supp, blast)
+  obtain b1'::"coname" where f4:"b1'\<sharp>(a,M1,M2,N,b1,b2,a')" by (rule exists_fresh(2), rule fin_supp, blast)
+  obtain b2'::"coname" where f5:"b2'\<sharp>(a,M1,M2,N,b1,b2,a',b1')" by (rule exists_fresh(2),rule fin_supp, blast)
+  have "Cut <a>.(AndR <b1>.M1 <b2>.M2 a) (y).(AndL1 (x).N y)
+                      = Cut <a'>.(AndR <b1>.M1 <b2>.M2 a') (y').(AndL1 (x).N y')"
+    using f1 f2 f3 f4 fs
+    apply(rule_tac sym)
+    apply(perm_simp add: trm.inject alpha calc_atm fresh_prod fresh_left fresh_atm abs_fresh)
+    apply(auto simp add: perm_fresh_fresh)
+    done
+  also have "\<dots> = Cut <a'>.(AndR <b1'>.([(b1',b1)]\<bullet>M1) <b2'>.([(b2',b2)]\<bullet>M2) a') 
+                                                               (y').(AndL1 (x').([(x',x)]\<bullet>N) y')"
+    using f1 f2 f3 f4 f5 fs 
+    apply(rule_tac sym)
+    apply(perm_simp add: trm.inject alpha calc_atm fresh_prod fresh_left fresh_atm abs_fresh)
+    done
+  also have "\<dots> \<longrightarrow>\<^isub>l Cut <b1'>.([(b1',b1)]\<bullet>M1) (x').([(x',x)]\<bullet>N)"
+    using f1 f2 f3 f4 f5 fs
+    apply -
+    apply(rule l_redu.intros)
+    apply(auto simp add: abs_fresh fresh_prod fresh_left calc_atm fresh_atm)
+    done
+  also have "\<dots> = Cut <b1>.M1 (x).N"
+    using f1 f2 f3 f4 f5 fs by (auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  finally show ?thesis by simp
+qed 
+
+lemma better_LAnd2_intro[intro]:
+  shows "\<lbrakk>a\<sharp>([b1].M1,[b2].M2); y\<sharp>[x].N\<rbrakk> 
+         \<Longrightarrow> Cut <a>.(AndR <b1>.M1 <b2>.M2 a) (y).(AndL2 (x).N y) \<longrightarrow>\<^isub>l Cut <b2>.M2 (x).N"
+proof -
+  assume fs: "a\<sharp>([b1].M1,[b2].M2)" "y\<sharp>[x].N"
+  obtain x'::"name" where f1: "x'\<sharp>(y,N,M1,M2,x)" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain y'::"name" where f2: "y'\<sharp>(y,N,M1,M2,x,x')" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain a'::"coname" where f3: "a'\<sharp>(a,M1,M2,N,b1,b2)" by (rule exists_fresh(2), rule fin_supp, blast)
+  obtain b1'::"coname" where f4:"b1'\<sharp>(a,M1,M2,N,b1,b2,a')" by (rule exists_fresh(2), rule fin_supp, blast)
+  obtain b2'::"coname" where f5:"b2'\<sharp>(a,M1,M2,N,b1,b2,a',b1')" by (rule exists_fresh(2),rule fin_supp, blast)
+  have "Cut <a>.(AndR <b1>.M1 <b2>.M2 a) (y).(AndL2 (x).N y)
+                      = Cut <a'>.(AndR <b1>.M1 <b2>.M2 a') (y').(AndL2 (x).N y')"
+    using f1 f2 f3 f4 fs
+    apply(rule_tac sym)
+    apply(perm_simp add: trm.inject alpha calc_atm fresh_prod fresh_left fresh_atm abs_fresh)
+    apply(auto simp add: perm_fresh_fresh)
+    done
+  also have "\<dots> = Cut <a'>.(AndR <b1'>.([(b1',b1)]\<bullet>M1) <b2'>.([(b2',b2)]\<bullet>M2) a') 
+                                                               (y').(AndL2 (x').([(x',x)]\<bullet>N) y')"
+    using f1 f2 f3 f4 f5 fs 
+    apply(rule_tac sym)
+    apply(perm_simp add: trm.inject alpha calc_atm fresh_prod fresh_left fresh_atm abs_fresh)
+    done
+  also have "\<dots> \<longrightarrow>\<^isub>l Cut <b2'>.([(b2',b2)]\<bullet>M2) (x').([(x',x)]\<bullet>N)"
+    using f1 f2 f3 f4 f5 fs
+    apply -
+    apply(rule l_redu.intros)
+    apply(auto simp add: abs_fresh fresh_prod fresh_left calc_atm fresh_atm)
+    done
+  also have "\<dots> = Cut <b2>.M2 (x).N"
+    using f1 f2 f3 f4 f5 fs by (auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  finally show ?thesis by simp
+qed
+
+lemma better_LOr1_intro[intro]:
+  shows "\<lbrakk>y\<sharp>([x1].N1,[x2].N2); b\<sharp>[a].M\<rbrakk> 
+         \<Longrightarrow> Cut <b>.(OrR1 <a>.M b) (y).(OrL (x1).N1 (x2).N2 y) \<longrightarrow>\<^isub>l Cut <a>.M (x1).N1"
+proof -
+  assume fs: "y\<sharp>([x1].N1,[x2].N2)" "b\<sharp>[a].M"
+  obtain y'::"name" where f1: "y'\<sharp>(y,M,N1,N2,x1,x2)" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain x1'::"name" where f2: "x1'\<sharp>(y,M,N1,N2,x1,x2,y')" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain x2'::"name" where f3: "x2'\<sharp>(y,M,N1,N2,x1,x2,y',x1')" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain a'::"coname" where f4: "a'\<sharp>(a,N1,N2,M,b)" by (rule exists_fresh(2), rule fin_supp, blast)
+  obtain b'::"coname" where f5: "b'\<sharp>(a,N1,N2,M,b,a')" by (rule exists_fresh(2),rule fin_supp, blast)
+  have "Cut <b>.(OrR1 <a>.M b) (y).(OrL (x1).N1 (x2).N2 y)
+                      = Cut <b'>.(OrR1 <a>.M b') (y').(OrL (x1).N1 (x2).N2 y')"
+    using f1 f2 f3 f4 f5 fs
+    apply(rule_tac sym)
+    apply(perm_simp add: trm.inject alpha calc_atm fresh_prod fresh_left fresh_atm abs_fresh)
+    apply(auto simp add: perm_fresh_fresh)
+    done
+  also have "\<dots> = Cut <b'>.(OrR1 <a'>.([(a',a)]\<bullet>M) b') 
+              (y').(OrL (x1').([(x1',x1)]\<bullet>N1) (x2').([(x2',x2)]\<bullet>N2) y')"   
+    using f1 f2 f3 f4 f5 fs 
+    apply(rule_tac sym)
+    apply(perm_simp add: trm.inject alpha calc_atm fresh_prod fresh_left fresh_atm abs_fresh)
+    done
+  also have "\<dots> \<longrightarrow>\<^isub>l Cut <a'>.([(a',a)]\<bullet>M) (x1').([(x1',x1)]\<bullet>N1)"
+    using f1 f2 f3 f4 f5 fs
+    apply -
+    apply(rule l_redu.intros)
+    apply(auto simp add: abs_fresh fresh_prod fresh_left calc_atm fresh_atm)
+    done
+  also have "\<dots> = Cut <a>.M (x1).N1"
+    using f1 f2 f3 f4 f5 fs by (auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  finally show ?thesis by simp
+qed
+
+lemma better_LOr2_intro[intro]:
+  shows "\<lbrakk>y\<sharp>([x1].N1,[x2].N2); b\<sharp>[a].M\<rbrakk> 
+         \<Longrightarrow> Cut <b>.(OrR2 <a>.M b) (y).(OrL (x1).N1 (x2).N2 y) \<longrightarrow>\<^isub>l Cut <a>.M (x2).N2"
+proof -
+  assume fs: "y\<sharp>([x1].N1,[x2].N2)" "b\<sharp>[a].M"
+  obtain y'::"name" where f1: "y'\<sharp>(y,M,N1,N2,x1,x2)" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain x1'::"name" where f2: "x1'\<sharp>(y,M,N1,N2,x1,x2,y')" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain x2'::"name" where f3: "x2'\<sharp>(y,M,N1,N2,x1,x2,y',x1')" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain a'::"coname" where f4: "a'\<sharp>(a,N1,N2,M,b)" by (rule exists_fresh(2), rule fin_supp, blast)
+  obtain b'::"coname" where f5: "b'\<sharp>(a,N1,N2,M,b,a')" by (rule exists_fresh(2),rule fin_supp, blast)
+  have "Cut <b>.(OrR2 <a>.M b) (y).(OrL (x1).N1 (x2).N2 y)
+                      = Cut <b'>.(OrR2 <a>.M b') (y').(OrL (x1).N1 (x2).N2 y')"
+    using f1 f2 f3 f4 f5 fs
+    apply(rule_tac sym)
+    apply(perm_simp add: trm.inject alpha calc_atm fresh_prod fresh_left fresh_atm abs_fresh)
+    apply(auto simp add: perm_fresh_fresh)
+    done
+  also have "\<dots> = Cut <b'>.(OrR2 <a'>.([(a',a)]\<bullet>M) b') 
+              (y').(OrL (x1').([(x1',x1)]\<bullet>N1) (x2').([(x2',x2)]\<bullet>N2) y')"   
+    using f1 f2 f3 f4 f5 fs 
+    apply(rule_tac sym)
+    apply(perm_simp add: trm.inject alpha calc_atm fresh_prod fresh_left fresh_atm abs_fresh)
+    done
+  also have "\<dots> \<longrightarrow>\<^isub>l Cut <a'>.([(a',a)]\<bullet>M) (x2').([(x2',x2)]\<bullet>N2)"
+    using f1 f2 f3 f4 f5 fs
+    apply -
+    apply(rule l_redu.intros)
+    apply(auto simp add: abs_fresh fresh_prod fresh_left calc_atm fresh_atm)
+    done
+  also have "\<dots> = Cut <a>.M (x2).N2"
+    using f1 f2 f3 f4 f5 fs by (auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  finally show ?thesis by simp
+qed 
+
+lemma better_LImp_intro[intro]:
+  shows "\<lbrakk>z\<sharp>(N,[y].P); b\<sharp>[a].M; a\<sharp>N\<rbrakk> 
+         \<Longrightarrow> Cut <b>.(ImpR (x).<a>.M b) (z).(ImpL <c>.N (y).P z) \<longrightarrow>\<^isub>l Cut <a>.(Cut <c>.N (x).M) (y).P"
+proof -
+  assume fs: "z\<sharp>(N,[y].P)" "b\<sharp>[a].M" "a\<sharp>N"
+  obtain y'::"name" where f1: "y'\<sharp>(y,M,N,P,z,x)" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain x'::"name" where f2: "x'\<sharp>(y,M,N,P,z,x,y')" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain z'::"name" where f3: "z'\<sharp>(y,M,N,P,z,x,y',x')" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain a'::"coname" where f4: "a'\<sharp>(a,N,P,M,b)" by (rule exists_fresh(2), rule fin_supp, blast)
+  obtain b'::"coname" where f5: "b'\<sharp>(a,N,P,M,b,c,a')" by (rule exists_fresh(2),rule fin_supp, blast)
+  obtain c'::"coname" where f6: "c'\<sharp>(a,N,P,M,b,c,a',b')" by (rule exists_fresh(2),rule fin_supp, blast)
+  have " Cut <b>.(ImpR (x).<a>.M b) (z).(ImpL <c>.N (y).P z)
+                      =  Cut <b'>.(ImpR (x).<a>.M b') (z').(ImpL <c>.N (y).P z')"
+    using f1 f2 f3 f4 f5 fs
+    apply(rule_tac sym)
+    apply(perm_simp add: trm.inject alpha calc_atm fresh_prod fresh_left fresh_atm abs_fresh)
+    apply(auto simp add: perm_fresh_fresh)
+    done
+  also have "\<dots> = Cut <b'>.(ImpR (x').<a'>.([(a',a)]\<bullet>([(x',x)]\<bullet>M)) b') 
+                           (z').(ImpL <c'>.([(c',c)]\<bullet>N) (y').([(y',y)]\<bullet>P) z')"
+    using f1 f2 f3 f4 f5 f6 fs 
+    apply(rule_tac sym)
+    apply(simp add: trm.inject)
+    apply(simp add: alpha)
+    apply(rule conjI)
+    apply(simp add: trm.inject)
+    apply(simp add: alpha fresh_prod fresh_atm abs_perm calc_atm fresh_left abs_fresh)
+    apply(simp add: trm.inject)
+    apply(simp add: alpha)
+    apply(rule conjI)
+    apply(simp add: alpha fresh_prod fresh_atm abs_perm calc_atm fresh_left abs_fresh)
+    apply(simp add: alpha fresh_prod fresh_atm abs_perm calc_atm fresh_left abs_fresh)
+    done
+  also have "\<dots> \<longrightarrow>\<^isub>l Cut <a'>.(Cut <c'>.([(c',c)]\<bullet>N) (x').([(a',a)]\<bullet>[(x',x)]\<bullet>M)) (y').([(y',y)]\<bullet>P)"
+    using f1 f2 f3 f4 f5 f6 fs
+    apply -
+    apply(rule l_redu.intros)
+    apply(auto simp add: abs_fresh fresh_prod fresh_left calc_atm fresh_atm)
+    done
+  also have "\<dots> = Cut <a>.(Cut <c>.N (x).M) (y).P"
+    using f1 f2 f3 f4 f5 f6 fs 
+    apply(simp add: trm.inject)
+    apply(rule conjI)
+    apply(simp add: alpha)
+    apply(rule disjI2)
+    apply(simp add: trm.inject)
+    apply(rule conjI)
+    apply(simp add: fresh_prod fresh_atm)
+    apply(rule conjI)
+    apply(perm_simp add: calc_atm)
+    apply(auto simp add: fresh_prod fresh_atm)[1]
+    apply(perm_simp add: alpha)
+    apply(perm_simp add: alpha)
+    apply(perm_simp add: alpha)
+    apply(rule conjI)
+    apply(perm_simp add: calc_atm)
+    apply(rule_tac pi="[(a',a)]" in pt_bij4[OF pt_coname_inst, OF at_coname_inst])
+    apply(perm_simp add: abs_perm calc_atm)
+    apply(perm_simp add: alpha fresh_prod fresh_atm)
+    apply(simp add: abs_fresh)
+    apply(perm_simp add: alpha fresh_prod fresh_atm)
+    done
+  finally show ?thesis by simp
+qed 
+
+lemma alpha_coname:
+  fixes M::"trm"
+  and   a::"coname"
+  assumes a: "[a].M = [b].N" "c\<sharp>(a,b,M,N)"
+  shows "M = [(a,c)]\<bullet>[(b,c)]\<bullet>N"
+using a
+apply(auto simp add: alpha' fresh_prod fresh_atm)
+apply(drule sym)
+apply(perm_simp)
+done 
+
+lemma alpha_name:
+  fixes M::"trm"
+  and   x::"name"
+  assumes a: "[x].M = [y].N" "z\<sharp>(x,y,M,N)"
+  shows "M = [(x,z)]\<bullet>[(y,z)]\<bullet>N"
+using a
+apply(auto simp add: alpha' fresh_prod fresh_atm)
+apply(drule sym)
+apply(perm_simp)
+done 
+
+lemma alpha_name_coname:
+  fixes M::"trm"
+  and   x::"name"
+  and   a::"coname"
+  assumes a: "[x].[b].M = [y].[c].N" "z\<sharp>(x,y,M,N)" "a\<sharp>(b,c,M,N)"
+  shows "M = [(x,z)]\<bullet>[(b,a)]\<bullet>[(c,a)]\<bullet>[(y,z)]\<bullet>N"
+using a
+apply(auto simp add: alpha' fresh_prod fresh_atm abs_supp fin_supp abs_fresh abs_perm fresh_left calc_atm)
+apply(drule sym)
+apply(simp)
+apply(perm_simp)
+done 
+
+lemma Cut_l_redu_elim:
+  assumes a: "Cut <a>.M (x).N \<longrightarrow>\<^isub>l R"
+  shows "(\<exists>b. R = M[a\<turnstile>c>b]) \<or> (\<exists>y. R = N[x\<turnstile>n>y]) \<or>
+  (\<exists>y M' b N'. M = NotR (y).M' a \<and> N = NotL <b>.N' x \<and> R = Cut <b>.N' (y).M' \<and> fic M a \<and> fin N x) \<or>
+  (\<exists>b M1 c M2 y N'. M = AndR <b>.M1 <c>.M2 a \<and> N = AndL1 (y).N' x \<and> R = Cut <b>.M1 (y).N' 
+                                                                            \<and> fic M a \<and> fin N x) \<or>
+  (\<exists>b M1 c M2 y N'. M = AndR <b>.M1 <c>.M2 a \<and> N = AndL2 (y).N' x \<and> R = Cut <c>.M2 (y).N' 
+                                                                            \<and> fic M a \<and> fin N x) \<or>
+  (\<exists>b N' z M1 y M2. M = OrR1 <b>.N' a \<and> N = OrL (z).M1 (y).M2 x \<and> R = Cut <b>.N' (z).M1 
+                                                                            \<and> fic M a \<and> fin N x) \<or>
+  (\<exists>b N' z M1 y M2. M = OrR2 <b>.N' a \<and> N = OrL (z).M1 (y).M2 x \<and> R = Cut <b>.N' (y).M2 
+                                                                            \<and> fic M a \<and> fin N x) \<or>
+  (\<exists>z b M' c N1 y N2. M = ImpR (z).<b>.M' a \<and> N = ImpL <c>.N1 (y).N2 x \<and> 
+            R = Cut <b>.(Cut <c>.N1 (z).M') (y).N2 \<and> b\<sharp>(c,N1) \<and> fic M a \<and> fin N x)"
+using a
+apply(erule_tac l_redu.cases)
+apply(rule disjI1)
+(* ax case *)
+apply(simp add: trm.inject)
+apply(rule_tac x="b" in exI)
+apply(erule conjE)
+apply(simp add: alpha)
+apply(erule disjE)
+apply(simp)
+apply(simp)
+apply(simp add: rename_fresh)
+apply(rule disjI2)
+apply(rule disjI1)
+(* ax case *)
+apply(simp add: trm.inject)
+apply(rule_tac x="y" in exI)
+apply(erule conjE)
+apply(thin_tac "[a].M = [aa].Ax y aa")
+apply(simp add: alpha)
+apply(erule disjE)
+apply(simp)
+apply(simp)
+apply(simp add: rename_fresh)
+apply(rule disjI2)
+apply(rule disjI2)
+apply(rule disjI1)
+(* not case *)
+apply(simp add: trm.inject)
+apply(erule conjE)+
+apply(generate_fresh "coname")
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(auto)[1]
+apply(drule_tac c="c" in  alpha_coname)
+apply(simp add: fresh_prod fresh_atm abs_fresh)
+apply(simp add: calc_atm)
+apply(rule exI)+
+apply(rule conjI)
+apply(rule refl)
+apply(generate_fresh "name")
+apply(simp add: calc_atm abs_fresh fresh_prod fresh_atm fresh_left)
+apply(auto)[1]
+apply(drule_tac z="ca" in  alpha_name)
+apply(simp add: fresh_prod fresh_atm abs_fresh)
+apply(simp add: calc_atm)
+apply(rule exI)+
+apply(rule conjI)
+apply(rule refl)
+apply(auto simp add: calc_atm abs_fresh fresh_left)[1]
+apply(case_tac "y=x")
+apply(perm_simp)
+apply(perm_simp)
+apply(case_tac "aa=a")
+apply(perm_simp)
+apply(perm_simp)
+(* and1 case *)
+apply(rule disjI2)
+apply(rule disjI2)
+apply(rule disjI2)
+apply(rule disjI1)
+apply(simp add: trm.inject)
+apply(erule conjE)+
+apply(generate_fresh "coname")
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(auto)[1]
+apply(drule_tac c="c" in  alpha_coname)
+apply(simp add: fresh_prod fresh_atm abs_fresh)
+apply(simp)
+apply(rule exI)+
+apply(rule conjI)
+apply(rule exI)+
+apply(rule_tac s="a" and t="[(a,c)]\<bullet>[(b,c)]\<bullet>b" in subst)
+apply(simp add: calc_atm)
+apply(rule refl)
+apply(generate_fresh "name")
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(auto)[1]
+apply(drule_tac z="ca" in  alpha_name)
+apply(simp add: fresh_prod fresh_atm abs_fresh)
+apply(simp)
+apply(rule exI)+
+apply(rule conjI)
+apply(rule_tac s="x" and t="[(x,ca)]\<bullet>[(y,ca)]\<bullet>y" in subst)
+apply(simp add: calc_atm)
+apply(rule refl)
+apply(auto simp add: fresh_left calc_atm abs_fresh split: if_splits)[1]
+apply(generate_fresh "name")
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(auto)[1]
+apply(drule_tac z="cb" in  alpha_name)
+apply(simp add: fresh_prod fresh_atm abs_fresh)
+apply(simp)
+apply(rule exI)+
+apply(rule conjI)
+apply(rule_tac s="x" and t="[(x,cb)]\<bullet>[(y,cb)]\<bullet>y" in subst)
+apply(simp add: calc_atm)
+apply(rule refl)
+apply(auto simp add: fresh_left calc_atm abs_fresh alpha perm_fresh_fresh split: if_splits)[1]
+apply(perm_simp)+
+apply(generate_fresh "name")
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(auto)[1]
+apply(drule_tac z="cb" in  alpha_name)
+apply(simp add: fresh_prod fresh_atm abs_fresh)
+apply(simp)
+apply(rule exI)+
+apply(rule conjI)
+apply(rule_tac s="x" and t="[(x,cb)]\<bullet>[(y,cb)]\<bullet>y" in subst)
+apply(simp add: calc_atm)
+apply(rule refl)
+apply(auto simp add: fresh_left calc_atm abs_fresh alpha perm_fresh_fresh split: if_splits)[1]
+apply(perm_simp)+
+apply(generate_fresh "name")
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(auto)[1]
+apply(drule_tac z="cb" in  alpha_name)
+apply(simp add: fresh_prod fresh_atm abs_fresh)
+apply(simp)
+apply(rule exI)+
+apply(rule conjI)
+apply(rule_tac s="x" and t="[(x,cb)]\<bullet>[(y,cb)]\<bullet>y" in subst)
+apply(simp add: calc_atm)
+apply(rule refl)
+apply(auto simp add: fresh_left calc_atm abs_fresh alpha perm_fresh_fresh split: if_splits)[1]
+apply(perm_simp)+
+(* and2 case *)
+apply(rule disjI2)
+apply(rule disjI2)
+apply(rule disjI2)
+apply(rule disjI2)
+apply(rule disjI1)
+apply(simp add: trm.inject)
+apply(erule conjE)+
+apply(generate_fresh "coname")
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(auto)[1]
+apply(drule_tac c="c" in  alpha_coname)
+apply(simp add: fresh_prod fresh_atm abs_fresh)
+apply(simp)
+apply(rule exI)+
+apply(rule conjI)
+apply(rule_tac s="a" and t="[(a,c)]\<bullet>[(b,c)]\<bullet>b" in subst)
+apply(simp add: calc_atm)
+apply(rule refl)
+apply(generate_fresh "name")
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(auto)[1]
+apply(drule_tac z="ca" in  alpha_name)
+apply(simp add: fresh_prod fresh_atm abs_fresh)
+apply(simp)
+apply(rule exI)+
+apply(rule conjI)
+apply(rule_tac s="x" and t="[(x,ca)]\<bullet>[(y,ca)]\<bullet>y" in subst)
+apply(simp add: calc_atm)
+apply(rule refl)
+apply(auto simp add: fresh_left calc_atm abs_fresh split: if_splits)[1]
+apply(generate_fresh "name")
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(auto)[1]
+apply(drule_tac z="cb" in  alpha_name)
+apply(simp add: fresh_prod fresh_atm abs_fresh)
+apply(simp)
+apply(rule exI)+
+apply(rule conjI)
+apply(rule_tac s="x" and t="[(x,cb)]\<bullet>[(y,cb)]\<bullet>y" in subst)
+apply(simp add: calc_atm)
+apply(rule refl)
+apply(auto simp add: fresh_left calc_atm abs_fresh alpha perm_fresh_fresh split: if_splits)[1]
+apply(perm_simp)+
+apply(generate_fresh "name")
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(auto)[1]
+apply(drule_tac z="cb" in  alpha_name)
+apply(simp add: fresh_prod fresh_atm abs_fresh)
+apply(simp)
+apply(rule exI)+
+apply(rule conjI)
+apply(rule_tac s="x" and t="[(x,cb)]\<bullet>[(y,cb)]\<bullet>y" in subst)
+apply(simp add: calc_atm)
+apply(rule refl)
+apply(auto simp add: fresh_left calc_atm abs_fresh alpha perm_fresh_fresh split: if_splits)[1]
+apply(perm_simp)+
+apply(generate_fresh "name")
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(auto)[1]
+apply(drule_tac z="cb" in  alpha_name)
+apply(simp add: fresh_prod fresh_atm abs_fresh)
+apply(simp)
+apply(rule exI)+
+apply(rule conjI)
+apply(rule_tac s="x" and t="[(x,cb)]\<bullet>[(y,cb)]\<bullet>y" in subst)
+apply(simp add: calc_atm)
+apply(rule refl)
+apply(auto simp add: fresh_left calc_atm abs_fresh alpha perm_fresh_fresh split: if_splits)[1]
+apply(perm_simp)+
+(* or1 case *)
+apply(rule disjI2)
+apply(rule disjI2)
+apply(rule disjI2)
+apply(rule disjI2)
+apply(rule disjI2)
+apply(rule disjI1)
+apply(simp add: trm.inject)
+apply(erule conjE)+
+apply(generate_fresh "coname")
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(auto)[1]
+apply(drule_tac c="c" in  alpha_coname)
+apply(simp add: fresh_prod fresh_atm abs_fresh)
+apply(simp)
+apply(rule exI)+
+apply(rule conjI)
+apply(rule_tac s="a" and t="[(a,c)]\<bullet>[(b,c)]\<bullet>b" in subst)
+apply(simp add: calc_atm)
+apply(rule refl)
+apply(generate_fresh "name")
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(auto)[1]
+apply(drule_tac z="ca" in  alpha_name)
+apply(simp add: fresh_prod fresh_atm abs_fresh)
+apply(simp)
+apply(rule exI)+
+apply(rule conjI)
+apply(rule exI)+
+apply(rule_tac s="x" and t="[(x,ca)]\<bullet>[(y,ca)]\<bullet>y" in subst)
+apply(simp add: calc_atm)
+apply(rule refl)
+apply(auto simp add: fresh_left calc_atm abs_fresh alpha perm_fresh_fresh split: if_splits)[1]
+apply(perm_simp)+
+apply(generate_fresh "name")
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(auto)[1]
+apply(drule_tac z="cb" in  alpha_name)
+apply(simp add: fresh_prod fresh_atm abs_fresh)
+apply(simp)
+apply(rule exI)+
+apply(rule conjI)
+apply(rule exI)+
+apply(rule_tac s="x" and t="[(x,cb)]\<bullet>[(y,cb)]\<bullet>y" in subst)
+apply(simp add: calc_atm)
+apply(rule refl)
+apply(auto simp add: fresh_left calc_atm abs_fresh alpha perm_fresh_fresh split: if_splits)[1]
+apply(perm_simp)+
+(* or2 case *)
+apply(rule disjI2)
+apply(rule disjI2)
+apply(rule disjI2)
+apply(rule disjI2)
+apply(rule disjI2)
+apply(rule disjI2)
+apply(rule disjI1)
+apply(simp add: trm.inject)
+apply(erule conjE)+
+apply(generate_fresh "coname")
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(auto)[1]
+apply(drule_tac c="c" in  alpha_coname)
+apply(simp add: fresh_prod fresh_atm abs_fresh)
+apply(simp)
+apply(rule exI)+
+apply(rule conjI)
+apply(rule_tac s="a" and t="[(a,c)]\<bullet>[(b,c)]\<bullet>b" in subst)
+apply(simp add: calc_atm)
+apply(rule refl)
+apply(generate_fresh "name")
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(auto)[1]
+apply(drule_tac z="ca" in  alpha_name)
+apply(simp add: fresh_prod fresh_atm abs_fresh)
+apply(simp)
+apply(rule exI)+
+apply(rule conjI)
+apply(rule_tac s="x" and t="[(x,ca)]\<bullet>[(y,ca)]\<bullet>y" in subst)
+apply(simp add: calc_atm)
+apply(rule refl)
+apply(auto simp add: fresh_left calc_atm abs_fresh alpha perm_fresh_fresh split: if_splits)[1]
+apply(perm_simp)+
+apply(generate_fresh "name")
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(auto)[1]
+apply(drule_tac z="cb" in  alpha_name)
+apply(simp add: fresh_prod fresh_atm abs_fresh)
+apply(simp)
+apply(rule exI)+
+apply(rule conjI)
+apply(rule_tac s="x" and t="[(x,cb)]\<bullet>[(y,cb)]\<bullet>y" in subst)
+apply(simp add: calc_atm)
+apply(rule refl)
+apply(auto simp add: fresh_left calc_atm abs_fresh alpha perm_fresh_fresh split: if_splits)[1]
+apply(perm_simp)+
+(* imp-case *)
+apply(rule disjI2)
+apply(rule disjI2)
+apply(rule disjI2)
+apply(rule disjI2)
+apply(rule disjI2)
+apply(rule disjI2)
+apply(rule disjI2)
+apply(simp add: trm.inject)
+apply(erule conjE)+
+apply(generate_fresh "coname")
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(auto)[1]
+apply(drule_tac c="ca" in  alpha_coname)
+apply(simp add: fresh_prod fresh_atm abs_fresh)
+apply(simp)
+apply(rule exI)+
+apply(rule conjI)
+apply(rule_tac s="a" and t="[(a,ca)]\<bullet>[(b,ca)]\<bullet>b" in subst)
+apply(simp add: calc_atm)
+apply(rule refl)
+apply(generate_fresh "name")
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(auto)[1]
+apply(drule_tac z="cb" in  alpha_name)
+apply(simp add: fresh_prod fresh_atm abs_fresh)
+apply(simp)
+apply(rule exI)+
+apply(rule conjI)
+apply(rule_tac s="x" and t="[(x,cb)]\<bullet>[(z,cb)]\<bullet>z" in subst)
+apply(simp add: calc_atm)
+apply(rule refl)
+apply(auto simp add: fresh_left calc_atm abs_fresh alpha perm_fresh_fresh split: if_splits)[1]
+apply(perm_simp)+
+apply(generate_fresh "name")
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(auto)[1]
+apply(drule_tac z="cc" in  alpha_name)
+apply(simp add: fresh_prod fresh_atm abs_fresh)
+apply(simp)
+apply(rule exI)+
+apply(rule conjI)
+apply(rule_tac s="x" and t="[(x,cc)]\<bullet>[(z,cc)]\<bullet>z" in subst)
+apply(simp add: calc_atm)
+apply(rule refl)
+apply(auto simp add: fresh_left calc_atm abs_fresh alpha perm_fresh_fresh split: if_splits)[1]
+apply(perm_simp)+
+done
+
+inductive2
+  c_redu :: "trm \<Rightarrow> trm \<Rightarrow> bool" ("_ \<longrightarrow>\<^isub>c _" [100,100] 100)
+where
+  left[intro]:  "\<lbrakk>\<not>fic M a; a\<sharp>N; x\<sharp>M\<rbrakk> \<Longrightarrow> Cut <a>.M (x).N \<longrightarrow>\<^isub>c M{a:=(x).N}"
+| right[intro]: "\<lbrakk>\<not>fin N x; a\<sharp>N; x\<sharp>M\<rbrakk> \<Longrightarrow> Cut <a>.M (x).N \<longrightarrow>\<^isub>c N{x:=<a>.M}"
+
+equivariance c_redu
+
+nominal_inductive c_redu
+ by (simp_all add: abs_fresh subst_fresh)
+
+lemma better_left[intro]:
+  shows "\<not>fic M a \<Longrightarrow> Cut <a>.M (x).N \<longrightarrow>\<^isub>c M{a:=(x).N}"
+proof -
+  assume not_fic: "\<not>fic M a"
+  obtain x'::"name" where fs1: "x'\<sharp>(N,M,x)" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain a'::"coname" where fs2: "a'\<sharp>(a,M,N)" by (rule exists_fresh(2), rule fin_supp, blast)
+  have "Cut <a>.M (x).N =  Cut <a'>.([(a',a)]\<bullet>M) (x').([(x',x)]\<bullet>N)"
+    using fs1 fs2 by (rule_tac sym, auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  also have "\<dots> \<longrightarrow>\<^isub>c ([(a',a)]\<bullet>M){a':=(x').([(x',x)]\<bullet>N)}" using fs1 fs2 not_fic
+    apply -
+    apply(rule left)
+    apply(clarify)
+    apply(drule_tac a'="a" in fic_rename)
+    apply(simp add: perm_swap)
+    apply(simp add: fresh_left calc_atm)+
+    done
+  also have "\<dots> = M{a:=(x).N}" using fs1 fs2
+    by (simp add: subst_rename[symmetric] fresh_atm fresh_prod fresh_left calc_atm)
+  finally show ?thesis by simp
+qed
+
+lemma better_right[intro]:
+  shows "\<not>fin N x \<Longrightarrow> Cut <a>.M (x).N \<longrightarrow>\<^isub>c N{x:=<a>.M}"
+proof -
+  assume not_fin: "\<not>fin N x"
+  obtain x'::"name" where fs1: "x'\<sharp>(N,M,x)" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain a'::"coname" where fs2: "a'\<sharp>(a,M,N)" by (rule exists_fresh(2), rule fin_supp, blast)
+  have "Cut <a>.M (x).N =  Cut <a'>.([(a',a)]\<bullet>M) (x').([(x',x)]\<bullet>N)"
+    using fs1 fs2 by (rule_tac sym, auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  also have "\<dots> \<longrightarrow>\<^isub>c ([(x',x)]\<bullet>N){x':=<a'>.([(a',a)]\<bullet>M)}" using fs1 fs2 not_fin
+    apply -
+    apply(rule right)
+    apply(clarify)
+    apply(drule_tac x'="x" in fin_rename)
+    apply(simp add: perm_swap)
+    apply(simp add: fresh_left calc_atm)+
+    done
+  also have "\<dots> = N{x:=<a>.M}" using fs1 fs2
+    by (simp add: subst_rename[symmetric] fresh_atm fresh_prod fresh_left calc_atm)
+  finally show ?thesis by simp
+qed
+
+lemma fresh_c_redu:
+  fixes x::"name"
+  and   c::"coname"
+  shows "M \<longrightarrow>\<^isub>c M' \<Longrightarrow> x\<sharp>M \<Longrightarrow> x\<sharp>M'"
+  and   "M \<longrightarrow>\<^isub>c M' \<Longrightarrow> c\<sharp>M \<Longrightarrow> c\<sharp>M'"
+apply -
+apply(induct rule: c_redu.induct)
+apply(auto simp add: abs_fresh rename_fresh subst_fresh)
+apply(induct rule: c_redu.induct)
+apply(auto simp add: abs_fresh rename_fresh subst_fresh)
+done
+
+inductive2
+  a_redu :: "trm \<Rightarrow> trm \<Rightarrow> bool" ("_ \<longrightarrow>\<^isub>a _" [100,100] 100)
+where
+  al_redu[intro]: "M\<longrightarrow>\<^isub>l M' \<Longrightarrow> M \<longrightarrow>\<^isub>a M'"
+| ac_redu[intro]: "M\<longrightarrow>\<^isub>c M' \<Longrightarrow> M \<longrightarrow>\<^isub>a M'"
+| a_Cut_l: "\<lbrakk>a\<sharp>N; x\<sharp>M; M\<longrightarrow>\<^isub>a M'\<rbrakk> \<Longrightarrow> Cut <a>.M (x).N \<longrightarrow>\<^isub>a Cut <a>.M' (x).N"
+| a_Cut_r: "\<lbrakk>a\<sharp>N; x\<sharp>M; N\<longrightarrow>\<^isub>a N'\<rbrakk> \<Longrightarrow> Cut <a>.M (x).N \<longrightarrow>\<^isub>a Cut <a>.M (x).N'"
+| a_NotL[intro]: "M\<longrightarrow>\<^isub>a M' \<Longrightarrow> NotL <a>.M x \<longrightarrow>\<^isub>a NotL <a>.M' x"
+| a_NotR[intro]: "M\<longrightarrow>\<^isub>a M' \<Longrightarrow> NotR (x).M a \<longrightarrow>\<^isub>a NotR (x).M' a"
+| a_AndR_l: "\<lbrakk>a\<sharp>(N,c); b\<sharp>(M,c); b\<noteq>a; M\<longrightarrow>\<^isub>a M'\<rbrakk> \<Longrightarrow> AndR <a>.M <b>.N c \<longrightarrow>\<^isub>a AndR <a>.M' <b>.N c"
+| a_AndR_r: "\<lbrakk>a\<sharp>(N,c); b\<sharp>(M,c); b\<noteq>a; N\<longrightarrow>\<^isub>a N'\<rbrakk> \<Longrightarrow> AndR <a>.M <b>.N c \<longrightarrow>\<^isub>a AndR <a>.M <b>.N' c"
+| a_AndL1: "\<lbrakk>x\<sharp>y; M\<longrightarrow>\<^isub>a M'\<rbrakk> \<Longrightarrow> AndL1 (x).M y \<longrightarrow>\<^isub>a AndL1 (x).M' y"
+| a_AndL2: "\<lbrakk>x\<sharp>y; M\<longrightarrow>\<^isub>a M'\<rbrakk> \<Longrightarrow> AndL2 (x).M y \<longrightarrow>\<^isub>a AndL2 (x).M' y"
+| a_OrL_l: "\<lbrakk>x\<sharp>(N,z); y\<sharp>(M,z); y\<noteq>x; M\<longrightarrow>\<^isub>a M'\<rbrakk> \<Longrightarrow> OrL (x).M (y).N z \<longrightarrow>\<^isub>a OrL (x).M' (y).N z"
+| a_OrL_r: "\<lbrakk>x\<sharp>(N,z); y\<sharp>(M,z); y\<noteq>x; N\<longrightarrow>\<^isub>a N'\<rbrakk> \<Longrightarrow> OrL (x).M (y).N z \<longrightarrow>\<^isub>a OrL (x).M (y).N' z"
+| a_OrR1: "\<lbrakk>a\<sharp>b; M\<longrightarrow>\<^isub>a M'\<rbrakk> \<Longrightarrow> OrR1 <a>.M b \<longrightarrow>\<^isub>a OrR1 <a>.M' b"
+| a_OrR2: "\<lbrakk>a\<sharp>b; M\<longrightarrow>\<^isub>a M'\<rbrakk> \<Longrightarrow> OrR2 <a>.M b \<longrightarrow>\<^isub>a OrR2 <a>.M' b"
+| a_ImpL_l: "\<lbrakk>a\<sharp>N; x\<sharp>(M,y); M\<longrightarrow>\<^isub>a M'\<rbrakk> \<Longrightarrow> ImpL <a>.M (x).N y \<longrightarrow>\<^isub>a ImpL <a>.M' (x).N y"
+| a_ImpL_r: "\<lbrakk>a\<sharp>N; x\<sharp>(M,y); N\<longrightarrow>\<^isub>a N'\<rbrakk> \<Longrightarrow> ImpL <a>.M (x).N y \<longrightarrow>\<^isub>a ImpL <a>.M (x).N' y"
+| a_ImpR: "\<lbrakk>a\<sharp>b; M\<longrightarrow>\<^isub>a M'\<rbrakk> \<Longrightarrow> ImpR (x).<a>.M b \<longrightarrow>\<^isub>a ImpR (x).<a>.M' b"
+
+lemma fresh_a_redu:
+  fixes x::"name"
+  and   c::"coname"
+  shows "M \<longrightarrow>\<^isub>a M' \<Longrightarrow> x\<sharp>M \<Longrightarrow> x\<sharp>M'"
+  and   "M \<longrightarrow>\<^isub>a M' \<Longrightarrow> c\<sharp>M \<Longrightarrow> c\<sharp>M'"
+apply -
+apply(induct rule: a_redu.induct)
+apply(simp add: fresh_l_redu)
+apply(simp add: fresh_c_redu)
+apply(auto simp add: abs_fresh abs_supp fin_supp)
+apply(induct rule: a_redu.induct)
+apply(simp add: fresh_l_redu)
+apply(simp add: fresh_c_redu)
+apply(auto simp add: abs_fresh abs_supp fin_supp)
+done
+
+equivariance a_redu
+
+nominal_inductive a_redu
+  by (simp_all add: abs_fresh fresh_atm fresh_prod abs_supp fin_supp fresh_a_redu)
+
+lemma better_CutL_intro[intro]:
+  shows "M\<longrightarrow>\<^isub>a M' \<Longrightarrow> Cut <a>.M (x).N \<longrightarrow>\<^isub>a Cut <a>.M' (x).N"
+proof -
+  assume red: "M\<longrightarrow>\<^isub>a M'"
+  obtain x'::"name"   where fs1: "x'\<sharp>(M,N,x)" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain a'::"coname" where fs2: "a'\<sharp>(M,N,a)" by (rule exists_fresh(2), rule fin_supp, blast)
+  have "Cut <a>.M (x).N =  Cut <a'>.([(a',a)]\<bullet>M) (x').([(x',x)]\<bullet>N)"
+    using fs1 fs2 by (rule_tac sym, auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  also have "\<dots> \<longrightarrow>\<^isub>a  Cut <a'>.([(a',a)]\<bullet>M') (x').([(x',x)]\<bullet>N)" using fs1 fs2 red
+    by (auto intro: a_redu.intros simp add: fresh_left calc_atm a_redu.eqvt)
+  also have "\<dots> = Cut <a>.M' (x).N" 
+    using fs1 fs2 red by (auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm fresh_a_redu)
+  finally show ?thesis by simp
+qed
+
+lemma better_CutR_intro[intro]:
+  shows "N\<longrightarrow>\<^isub>a N' \<Longrightarrow> Cut <a>.M (x).N \<longrightarrow>\<^isub>a Cut <a>.M (x).N'"
+proof -
+  assume red: "N\<longrightarrow>\<^isub>a N'"
+  obtain x'::"name"   where fs1: "x'\<sharp>(M,N,x)" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain a'::"coname" where fs2: "a'\<sharp>(M,N,a)" by (rule exists_fresh(2), rule fin_supp, blast)
+  have "Cut <a>.M (x).N =  Cut <a'>.([(a',a)]\<bullet>M) (x').([(x',x)]\<bullet>N)"
+    using fs1 fs2 by (rule_tac sym, auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  also have "\<dots> \<longrightarrow>\<^isub>a  Cut <a'>.([(a',a)]\<bullet>M) (x').([(x',x)]\<bullet>N')" using fs1 fs2 red
+    by (auto intro: a_redu.intros simp add: fresh_left calc_atm a_redu.eqvt)
+  also have "\<dots> = Cut <a>.M (x).N'" 
+    using fs1 fs2 red by (auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm fresh_a_redu)
+  finally show ?thesis by simp
+qed
+    
+lemma better_AndRL_intro[intro]:
+  shows "M\<longrightarrow>\<^isub>a M' \<Longrightarrow> AndR <a>.M <b>.N c \<longrightarrow>\<^isub>a AndR <a>.M' <b>.N c"
+proof -
+  assume red: "M\<longrightarrow>\<^isub>a M'"
+  obtain b'::"coname" where fs1: "b'\<sharp>(M,N,a,b,c)" by (rule exists_fresh(2), rule fin_supp, blast)
+  obtain a'::"coname" where fs2: "a'\<sharp>(M,N,a,b,c,b')" by (rule exists_fresh(2), rule fin_supp, blast)
+  have "AndR <a>.M <b>.N c =  AndR <a'>.([(a',a)]\<bullet>M) <b'>.([(b',b)]\<bullet>N) c"
+    using fs1 fs2 by (rule_tac sym, auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  also have "\<dots> \<longrightarrow>\<^isub>a  AndR <a'>.([(a',a)]\<bullet>M') <b'>.([(b',b)]\<bullet>N) c" using fs1 fs2 red
+    by (auto intro: a_redu.intros simp add: fresh_left calc_atm a_redu.eqvt fresh_atm fresh_prod)
+  also have "\<dots> = AndR <a>.M' <b>.N c" 
+    using fs1 fs2 red by (auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm fresh_a_redu)
+  finally show ?thesis by simp
+qed
+
+lemma better_AndRR_intro[intro]:
+  shows "N\<longrightarrow>\<^isub>a N' \<Longrightarrow> AndR <a>.M <b>.N c \<longrightarrow>\<^isub>a AndR <a>.M <b>.N' c"
+proof -
+  assume red: "N\<longrightarrow>\<^isub>a N'"
+  obtain b'::"coname" where fs1: "b'\<sharp>(M,N,a,b,c)" by (rule exists_fresh(2), rule fin_supp, blast)
+  obtain a'::"coname" where fs2: "a'\<sharp>(M,N,a,b,c,b')" by (rule exists_fresh(2), rule fin_supp, blast)
+  have "AndR <a>.M <b>.N c =  AndR <a'>.([(a',a)]\<bullet>M) <b'>.([(b',b)]\<bullet>N) c"
+    using fs1 fs2 by (rule_tac sym, auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  also have "\<dots> \<longrightarrow>\<^isub>a  AndR <a'>.([(a',a)]\<bullet>M) <b'>.([(b',b)]\<bullet>N') c" using fs1 fs2 red
+    by (auto intro: a_redu.intros simp add: fresh_left calc_atm a_redu.eqvt fresh_atm fresh_prod)
+  also have "\<dots> = AndR <a>.M <b>.N' c" 
+    using fs1 fs2 red by (auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm fresh_a_redu)
+  finally show ?thesis by simp
+qed
+
+lemma better_AndL1_intro[intro]:
+  shows "M\<longrightarrow>\<^isub>a M' \<Longrightarrow> AndL1 (x).M y \<longrightarrow>\<^isub>a AndL1 (x).M' y"
+proof -
+  assume red: "M\<longrightarrow>\<^isub>a M'"
+  obtain x'::"name" where fs1: "x'\<sharp>(M,y,x)" by (rule exists_fresh(1), rule fin_supp, blast)
+  have "AndL1 (x).M y = AndL1 (x').([(x',x)]\<bullet>M) y"
+    using fs1 by (rule_tac sym, auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  also have "\<dots> \<longrightarrow>\<^isub>a AndL1 (x').([(x',x)]\<bullet>M') y" using fs1 red
+    by (auto intro: a_redu.intros simp add: fresh_left calc_atm a_redu.eqvt fresh_atm fresh_prod)
+  also have "\<dots> = AndL1 (x).M' y" 
+    using fs1 red by (auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm fresh_a_redu)
+  finally show ?thesis by simp
+qed
+
+lemma better_AndL2_intro[intro]:
+  shows "M\<longrightarrow>\<^isub>a M' \<Longrightarrow> AndL2 (x).M y \<longrightarrow>\<^isub>a AndL2 (x).M' y"
+proof -
+  assume red: "M\<longrightarrow>\<^isub>a M'"
+  obtain x'::"name" where fs1: "x'\<sharp>(M,y,x)" by (rule exists_fresh(1), rule fin_supp, blast)
+  have "AndL2 (x).M y = AndL2 (x').([(x',x)]\<bullet>M) y"
+    using fs1 by (rule_tac sym, auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  also have "\<dots> \<longrightarrow>\<^isub>a AndL2 (x').([(x',x)]\<bullet>M') y" using fs1 red
+    by (auto intro: a_redu.intros simp add: fresh_left calc_atm a_redu.eqvt fresh_atm fresh_prod)
+  also have "\<dots> = AndL2 (x).M' y" 
+    using fs1 red by (auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm fresh_a_redu)
+  finally show ?thesis by simp
+qed
+
+lemma better_OrLL_intro[intro]:
+  shows "M\<longrightarrow>\<^isub>a M' \<Longrightarrow> OrL (x).M (y).N z \<longrightarrow>\<^isub>a OrL (x).M' (y).N z"
+proof -
+  assume red: "M\<longrightarrow>\<^isub>a M'"
+  obtain x'::"name" where fs1: "x'\<sharp>(M,N,x,y,z)" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain y'::"name" where fs2: "y'\<sharp>(M,N,x,y,z,x')" by (rule exists_fresh(1), rule fin_supp, blast)
+  have "OrL (x).M (y).N z =  OrL (x').([(x',x)]\<bullet>M) (y').([(y',y)]\<bullet>N) z"
+    using fs1 fs2 by (rule_tac sym, auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  also have "\<dots> \<longrightarrow>\<^isub>a OrL (x').([(x',x)]\<bullet>M') (y').([(y',y)]\<bullet>N) z" using fs1 fs2 red
+    by (auto intro: a_redu.intros simp add: fresh_left calc_atm a_redu.eqvt fresh_atm fresh_prod)
+  also have "\<dots> = OrL (x).M' (y).N z" 
+    using fs1 fs2 red by (auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm fresh_a_redu)
+  finally show ?thesis by simp
+qed
+
+lemma better_OrLR_intro[intro]:
+  shows "N\<longrightarrow>\<^isub>a N' \<Longrightarrow> OrL (x).M (y).N z \<longrightarrow>\<^isub>a OrL (x).M (y).N' z"
+proof -
+  assume red: "N\<longrightarrow>\<^isub>a N'"
+  obtain x'::"name" where fs1: "x'\<sharp>(M,N,x,y,z)" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain y'::"name" where fs2: "y'\<sharp>(M,N,x,y,z,x')" by (rule exists_fresh(1), rule fin_supp, blast)
+  have "OrL (x).M (y).N z =  OrL (x').([(x',x)]\<bullet>M) (y').([(y',y)]\<bullet>N) z"
+    using fs1 fs2 by (rule_tac sym, auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  also have "\<dots> \<longrightarrow>\<^isub>a OrL (x').([(x',x)]\<bullet>M) (y').([(y',y)]\<bullet>N') z" using fs1 fs2 red
+    by (auto intro: a_redu.intros simp add: fresh_left calc_atm a_redu.eqvt fresh_atm fresh_prod)
+  also have "\<dots> = OrL (x).M (y).N' z" 
+    using fs1 fs2 red by (auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm fresh_a_redu)
+  finally show ?thesis by simp
+qed
+
+lemma better_OrR1_intro[intro]:
+  shows "M\<longrightarrow>\<^isub>a M' \<Longrightarrow> OrR1 <a>.M b \<longrightarrow>\<^isub>a OrR1 <a>.M' b"
+proof -
+  assume red: "M\<longrightarrow>\<^isub>a M'"
+  obtain a'::"coname" where fs1: "a'\<sharp>(M,b,a)" by (rule exists_fresh(2), rule fin_supp, blast)
+  have "OrR1 <a>.M b = OrR1 <a'>.([(a',a)]\<bullet>M) b"
+    using fs1 by (rule_tac sym, auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  also have "\<dots> \<longrightarrow>\<^isub>a OrR1 <a'>.([(a',a)]\<bullet>M') b" using fs1 red
+    by (auto intro: a_redu.intros simp add: fresh_left calc_atm a_redu.eqvt fresh_atm fresh_prod)
+  also have "\<dots> = OrR1 <a>.M' b" 
+    using fs1 red by (auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm fresh_a_redu)
+  finally show ?thesis by simp
+qed
+
+lemma better_OrR2_intro[intro]:
+  shows "M\<longrightarrow>\<^isub>a M' \<Longrightarrow> OrR2 <a>.M b \<longrightarrow>\<^isub>a OrR2 <a>.M' b"
+proof -
+  assume red: "M\<longrightarrow>\<^isub>a M'"
+  obtain a'::"coname" where fs1: "a'\<sharp>(M,b,a)" by (rule exists_fresh(2), rule fin_supp, blast)
+  have "OrR2 <a>.M b = OrR2 <a'>.([(a',a)]\<bullet>M) b"
+    using fs1 by (rule_tac sym, auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  also have "\<dots> \<longrightarrow>\<^isub>a OrR2 <a'>.([(a',a)]\<bullet>M') b" using fs1 red
+    by (auto intro: a_redu.intros simp add: fresh_left calc_atm a_redu.eqvt fresh_atm fresh_prod)
+  also have "\<dots> = OrR2 <a>.M' b" 
+    using fs1 red by (auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm fresh_a_redu)
+  finally show ?thesis by simp
+qed
+
+lemma better_ImpLL_intro[intro]:
+  shows "M\<longrightarrow>\<^isub>a M' \<Longrightarrow> ImpL <a>.M (x).N y \<longrightarrow>\<^isub>a ImpL <a>.M' (x).N y"
+proof -
+  assume red: "M\<longrightarrow>\<^isub>a M'"
+  obtain x'::"name"   where fs1: "x'\<sharp>(M,N,x,y)" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain a'::"coname" where fs2: "a'\<sharp>(M,N,a)" by (rule exists_fresh(2), rule fin_supp, blast)
+  have "ImpL <a>.M (x).N y =  ImpL <a'>.([(a',a)]\<bullet>M) (x').([(x',x)]\<bullet>N) y"
+    using fs1 fs2 by (rule_tac sym, auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  also have "\<dots> \<longrightarrow>\<^isub>a  ImpL <a'>.([(a',a)]\<bullet>M') (x').([(x',x)]\<bullet>N) y" using fs1 fs2 red
+    by (auto intro: a_redu.intros simp add: fresh_left calc_atm a_redu.eqvt fresh_atm fresh_prod)
+  also have "\<dots> = ImpL <a>.M' (x).N y" 
+    using fs1 fs2 red by (auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm fresh_a_redu)
+  finally show ?thesis by simp
+qed
+
+lemma better_ImpLR_intro[intro]:
+  shows "N\<longrightarrow>\<^isub>a N' \<Longrightarrow> ImpL <a>.M (x).N y \<longrightarrow>\<^isub>a ImpL <a>.M (x).N' y"
+proof -
+  assume red: "N\<longrightarrow>\<^isub>a N'"
+  obtain x'::"name"   where fs1: "x'\<sharp>(M,N,x,y)" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain a'::"coname" where fs2: "a'\<sharp>(M,N,a)" by (rule exists_fresh(2), rule fin_supp, blast)
+  have "ImpL <a>.M (x).N y =  ImpL <a'>.([(a',a)]\<bullet>M) (x').([(x',x)]\<bullet>N) y"
+    using fs1 fs2 by (rule_tac sym, auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  also have "\<dots> \<longrightarrow>\<^isub>a  ImpL <a'>.([(a',a)]\<bullet>M) (x').([(x',x)]\<bullet>N') y" using fs1 fs2 red
+    by (auto intro: a_redu.intros simp add: fresh_left calc_atm a_redu.eqvt fresh_atm fresh_prod)
+  also have "\<dots> = ImpL <a>.M (x).N' y" 
+    using fs1 fs2 red by (auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm fresh_a_redu)
+  finally show ?thesis by simp
+qed
+
+lemma better_ImpR_intro[intro]:
+  shows "M\<longrightarrow>\<^isub>a M' \<Longrightarrow> ImpR (x).<a>.M b \<longrightarrow>\<^isub>a ImpR (x).<a>.M' b"
+proof -
+  assume red: "M\<longrightarrow>\<^isub>a M'"
+  obtain a'::"coname" where fs2: "a'\<sharp>(M,a,b)" by (rule exists_fresh(2), rule fin_supp, blast)
+  have "ImpR (x).<a>.M b = ImpR (x).<a'>.([(a',a)]\<bullet>M) b"
+    using fs2 by (rule_tac sym, auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm)
+  also have "\<dots> \<longrightarrow>\<^isub>a ImpR (x).<a'>.([(a',a)]\<bullet>M') b" using fs2 red
+    by (auto intro: a_redu.intros simp add: fresh_left calc_atm a_redu.eqvt fresh_atm fresh_prod)
+  also have "\<dots> = ImpR (x).<a>.M' b" 
+    using fs2 red by (auto simp add: trm.inject alpha fresh_atm fresh_prod calc_atm fresh_a_redu)
+  finally show ?thesis by simp
+qed
+
+text {* axioms do not reduce *}
+
+lemma ax_do_not_l_reduce:
+  shows "Ax x a \<longrightarrow>\<^isub>l M \<Longrightarrow> False"
+by (erule_tac l_redu.cases) (simp_all add: trm.inject)
+ 
+lemma ax_do_not_c_reduce:
+  shows "Ax x a \<longrightarrow>\<^isub>c M \<Longrightarrow> False"
+by (erule_tac c_redu.cases) (simp_all add: trm.inject)
+
+lemma ax_do_not_a_reduce:
+  shows "Ax x a \<longrightarrow>\<^isub>a M \<Longrightarrow> False"
+apply(erule_tac a_redu.cases) 
+apply(auto simp add: trm.inject)
+apply(drule ax_do_not_l_reduce)
+apply(simp)
+apply(drule ax_do_not_c_reduce)
+apply(simp)
+done
+
+lemma a_redu_NotL_elim:
+  assumes a: "NotL <a>.M x \<longrightarrow>\<^isub>a R"
+  shows "\<exists>M'. R = NotL <a>.M' x \<and> M\<longrightarrow>\<^isub>aM'"
+using a
+apply(erule_tac a_redu.cases, simp_all add: trm.inject)
+apply(erule_tac l_redu.cases, simp_all add: trm.inject)
+apply(erule_tac c_redu.cases, simp_all add: trm.inject)
+apply(auto)
+apply(rotate_tac 1)
+apply(erule_tac a_redu.cases, simp_all add: trm.inject)
+apply(erule_tac l_redu.cases, simp_all add: trm.inject)
+apply(erule_tac c_redu.cases, simp_all add: trm.inject)
+apply(auto simp add: alpha a_redu.eqvt)
+apply(rule_tac x="([(a,aa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)
+apply(simp add: perm_swap)
+apply(rule_tac x="([(a,aaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)
+apply(simp add: perm_swap)
+done
+
+lemma a_redu_NotR_elim:
+  assumes a: "NotR (x).M a \<longrightarrow>\<^isub>a R"
+  shows "\<exists>M'. R = NotR (x).M' a \<and> M\<longrightarrow>\<^isub>aM'"
+using a
+apply(erule_tac a_redu.cases, simp_all add: trm.inject)
+apply(erule_tac l_redu.cases, simp_all add: trm.inject)
+apply(erule_tac c_redu.cases, simp_all add: trm.inject)
+apply(auto)
+apply(rotate_tac 1)
+apply(erule_tac a_redu.cases, simp_all add: trm.inject)
+apply(erule_tac l_redu.cases, simp_all add: trm.inject)
+apply(erule_tac c_redu.cases, simp_all add: trm.inject)
+apply(auto simp add: alpha a_redu.eqvt)
+apply(rule_tac x="([(x,xa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)
+apply(simp add: perm_swap)
+apply(rule_tac x="([(x,xaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)
+apply(simp add: perm_swap)
+done
+
+lemma a_redu_AndR_elim:
+  assumes a: "AndR <a>.M <b>.N c\<longrightarrow>\<^isub>a R"
+  shows "(\<exists>M'. R = AndR <a>.M' <b>.N c \<and> M\<longrightarrow>\<^isub>aM') \<or> (\<exists>N'. R = AndR <a>.M <b>.N' c \<and> N\<longrightarrow>\<^isub>aN')"
+using a
+apply(erule_tac a_redu.cases, simp_all add: trm.inject)
+apply(erule_tac l_redu.cases, simp_all add: trm.inject)
+apply(erule_tac c_redu.cases, simp_all add: trm.inject)
+apply(rotate_tac 6)
+apply(erule_tac a_redu.cases, simp_all add: trm.inject)
+apply(erule_tac l_redu.cases, simp_all add: trm.inject)
+apply(erule_tac c_redu.cases, simp_all add: trm.inject)
+apply(rule disjI1)
+apply(auto simp add: alpha a_redu.eqvt)[1]
+apply(rule_tac x="([(a,aa)]\<bullet>M'a)" in exI) 
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aa)]\<bullet>M'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aa)]\<bullet>M'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aa)]\<bullet>M'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule disjI2)
+apply(auto simp add: alpha a_redu.eqvt)[1]
+apply(rule_tac x="([(b,ba)]\<bullet>N')" in exI) 
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(b,baa)]\<bullet>N')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(b,ba)]\<bullet>N')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(b,baa)]\<bullet>N')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(b,ba)]\<bullet>N')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(b,baa)]\<bullet>N')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(b,ba)]\<bullet>N')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(b,baa)]\<bullet>N')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rotate_tac 6)
+apply(erule_tac a_redu.cases, simp_all add: trm.inject)
+apply(erule_tac l_redu.cases, simp_all add: trm.inject)
+apply(erule_tac c_redu.cases, simp_all add: trm.inject)
+apply(rule disjI1)
+apply(auto simp add: alpha a_redu.eqvt)[1]
+apply(rule_tac x="([(a,aa)]\<bullet>M')" in exI) 
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aa)]\<bullet>M')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aa)]\<bullet>M')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aa)]\<bullet>M')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aaa)]\<bullet>M')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aaa)]\<bullet>M')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aaa)]\<bullet>M')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aaa)]\<bullet>M')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule disjI2)
+apply(auto simp add: alpha a_redu.eqvt)[1]
+apply(rule_tac x="([(b,ba)]\<bullet>N'a)" in exI) 
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(b,ba)]\<bullet>N'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(b,ba)]\<bullet>N'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(b,ba)]\<bullet>N'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(b,baa)]\<bullet>N'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(b,baa)]\<bullet>N'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(b,baa)]\<bullet>N'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(b,baa)]\<bullet>N'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+done
+
+lemma a_redu_AndL1_elim:
+  assumes a: "AndL1 (x).M y \<longrightarrow>\<^isub>a R"
+  shows "\<exists>M'. R = AndL1 (x).M' y \<and> M\<longrightarrow>\<^isub>aM'"
+using a
+apply(erule_tac a_redu.cases, simp_all add: trm.inject)
+apply(erule_tac l_redu.cases, simp_all add: trm.inject)
+apply(erule_tac c_redu.cases, simp_all add: trm.inject)
+apply(auto)
+apply(rotate_tac 2)
+apply(erule_tac a_redu.cases, simp_all add: trm.inject)
+apply(erule_tac l_redu.cases, simp_all add: trm.inject)
+apply(erule_tac c_redu.cases, simp_all add: trm.inject)
+apply(auto simp add: alpha a_redu.eqvt)
+apply(rule_tac x="([(x,xa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)
+apply(simp add: perm_swap)
+apply(rule_tac x="([(x,xaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)
+apply(simp add: perm_swap)
+done
+
+lemma a_redu_AndL2_elim:
+  assumes a: "AndL2 (x).M y \<longrightarrow>\<^isub>a R"
+  shows "\<exists>M'. R = AndL2 (x).M' y \<and> M\<longrightarrow>\<^isub>aM'"
+using a
+apply(erule_tac a_redu.cases, simp_all add: trm.inject)
+apply(erule_tac l_redu.cases, simp_all add: trm.inject)
+apply(erule_tac c_redu.cases, simp_all add: trm.inject)
+apply(auto)
+apply(rotate_tac 2)
+apply(erule_tac a_redu.cases, simp_all add: trm.inject)
+apply(erule_tac l_redu.cases, simp_all add: trm.inject)
+apply(erule_tac c_redu.cases, simp_all add: trm.inject)
+apply(auto simp add: alpha a_redu.eqvt)
+apply(rule_tac x="([(x,xa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)
+apply(simp add: perm_swap)
+apply(rule_tac x="([(x,xaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)
+apply(simp add: perm_swap)
+done
+
+lemma a_redu_OrL_elim:
+  assumes a: "OrL (x).M (y).N z\<longrightarrow>\<^isub>a R"
+  shows "(\<exists>M'. R = OrL (x).M' (y).N z \<and> M\<longrightarrow>\<^isub>aM') \<or> (\<exists>N'. R = OrL (x).M (y).N' z \<and> N\<longrightarrow>\<^isub>aN')"
+using a
+apply(erule_tac a_redu.cases, simp_all add: trm.inject)
+apply(erule_tac l_redu.cases, simp_all add: trm.inject)
+apply(erule_tac c_redu.cases, simp_all add: trm.inject)
+apply(rotate_tac 6)
+apply(erule_tac a_redu.cases, simp_all add: trm.inject)
+apply(erule_tac l_redu.cases, simp_all add: trm.inject)
+apply(erule_tac c_redu.cases, simp_all add: trm.inject)
+apply(rule disjI1)
+apply(auto simp add: alpha a_redu.eqvt)[1]
+apply(rule_tac x="([(x,xa)]\<bullet>M'a)" in exI) 
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(x,xa)]\<bullet>M'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(x,xa)]\<bullet>M'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(x,xa)]\<bullet>M'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(x,xaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(x,xaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(x,xaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(x,xaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule disjI2)
+apply(auto simp add: alpha a_redu.eqvt)[1]
+apply(rule_tac x="([(y,ya)]\<bullet>N')" in exI) 
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,yaa)]\<bullet>N')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,ya)]\<bullet>N')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,yaa)]\<bullet>N')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,ya)]\<bullet>N')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,yaa)]\<bullet>N')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,ya)]\<bullet>N')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,yaa)]\<bullet>N')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rotate_tac 6)
+apply(erule_tac a_redu.cases, simp_all add: trm.inject)
+apply(erule_tac l_redu.cases, simp_all add: trm.inject)
+apply(erule_tac c_redu.cases, simp_all add: trm.inject)
+apply(rule disjI1)
+apply(auto simp add: alpha a_redu.eqvt)[1]
+apply(rule_tac x="([(x,xa)]\<bullet>M')" in exI) 
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(x,xa)]\<bullet>M')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(x,xa)]\<bullet>M')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(x,xa)]\<bullet>M')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(x,xaa)]\<bullet>M')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(x,xaa)]\<bullet>M')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(x,xaa)]\<bullet>M')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(x,xaa)]\<bullet>M')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule disjI2)
+apply(auto simp add: alpha a_redu.eqvt)[1]
+apply(rule_tac x="([(y,ya)]\<bullet>N'a)" in exI) 
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,ya)]\<bullet>N'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,ya)]\<bullet>N'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,ya)]\<bullet>N'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,yaa)]\<bullet>N'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,yaa)]\<bullet>N'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,yaa)]\<bullet>N'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,yaa)]\<bullet>N'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+done
+
+lemma a_redu_OrR1_elim:
+  assumes a: "OrR1 <a>.M b \<longrightarrow>\<^isub>a R"
+  shows "\<exists>M'. R = OrR1 <a>.M' b \<and> M\<longrightarrow>\<^isub>aM'"
+using a
+apply(erule_tac a_redu.cases, simp_all add: trm.inject)
+apply(erule_tac l_redu.cases, simp_all add: trm.inject)
+apply(erule_tac c_redu.cases, simp_all add: trm.inject)
+apply(auto)
+apply(rotate_tac 2)
+apply(erule_tac a_redu.cases, simp_all add: trm.inject)
+apply(erule_tac l_redu.cases, simp_all add: trm.inject)
+apply(erule_tac c_redu.cases, simp_all add: trm.inject)
+apply(auto simp add: alpha a_redu.eqvt)
+apply(rule_tac x="([(a,aa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)
+apply(simp add: perm_swap)
+apply(rule_tac x="([(a,aaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)
+apply(simp add: perm_swap)
+done
+
+lemma a_redu_OrR2_elim:
+  assumes a: "OrR2 <a>.M b \<longrightarrow>\<^isub>a R"
+  shows "\<exists>M'. R = OrR2 <a>.M' b \<and> M\<longrightarrow>\<^isub>aM'"
+using a
+apply(erule_tac a_redu.cases, simp_all add: trm.inject)
+apply(erule_tac l_redu.cases, simp_all add: trm.inject)
+apply(erule_tac c_redu.cases, simp_all add: trm.inject)
+apply(auto)
+apply(rotate_tac 2)
+apply(erule_tac a_redu.cases, simp_all add: trm.inject)
+apply(erule_tac l_redu.cases, simp_all add: trm.inject)
+apply(erule_tac c_redu.cases, simp_all add: trm.inject)
+apply(auto simp add: alpha a_redu.eqvt)
+apply(rule_tac x="([(a,aa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)
+apply(simp add: perm_swap)
+apply(rule_tac x="([(a,aaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)
+apply(simp add: perm_swap)
+done
+
+lemma a_redu_ImpL_elim:
+  assumes a: "ImpL <a>.M (y).N z\<longrightarrow>\<^isub>a R"
+  shows "(\<exists>M'. R = ImpL <a>.M' (y).N z \<and> M\<longrightarrow>\<^isub>aM') \<or> (\<exists>N'. R = ImpL <a>.M (y).N' z \<and> N\<longrightarrow>\<^isub>aN')"
+using a
+apply(erule_tac a_redu.cases, simp_all add: trm.inject)
+apply(erule_tac l_redu.cases, simp_all add: trm.inject)
+apply(erule_tac c_redu.cases, simp_all add: trm.inject)
+apply(rotate_tac 5)
+apply(erule_tac a_redu.cases, simp_all add: trm.inject)
+apply(erule_tac l_redu.cases, simp_all add: trm.inject)
+apply(erule_tac c_redu.cases, simp_all add: trm.inject)
+apply(rule disjI1)
+apply(auto simp add: alpha a_redu.eqvt)[1]
+apply(rule_tac x="([(a,aa)]\<bullet>M'a)" in exI) 
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aa)]\<bullet>M'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aa)]\<bullet>M'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aa)]\<bullet>M'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule disjI2)
+apply(auto simp add: alpha a_redu.eqvt)[1]
+apply(rule_tac x="([(y,xa)]\<bullet>N')" in exI) 
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,xa)]\<bullet>N')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,xa)]\<bullet>N')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,xa)]\<bullet>N')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,xa)]\<bullet>N')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,xa)]\<bullet>N')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,xa)]\<bullet>N')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,xa)]\<bullet>N')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rotate_tac 5)
+apply(erule_tac a_redu.cases, simp_all add: trm.inject)
+apply(erule_tac l_redu.cases, simp_all add: trm.inject)
+apply(erule_tac c_redu.cases, simp_all add: trm.inject)
+apply(rule disjI1)
+apply(auto simp add: alpha a_redu.eqvt)[1]
+apply(rule_tac x="([(a,aa)]\<bullet>M')" in exI) 
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aa)]\<bullet>M')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aa)]\<bullet>M')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aa)]\<bullet>M')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aaa)]\<bullet>M')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aaa)]\<bullet>M')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aaa)]\<bullet>M')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(a,aaa)]\<bullet>M')" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule disjI2)
+apply(auto simp add: alpha a_redu.eqvt)[1]
+apply(rule_tac x="([(y,xa)]\<bullet>N'a)" in exI) 
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,xa)]\<bullet>N'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,xa)]\<bullet>N'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,xa)]\<bullet>N'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,xa)]\<bullet>N'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,xa)]\<bullet>N'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,xa)]\<bullet>N'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+apply(rule_tac x="([(y,xa)]\<bullet>N'a)" in exI)
+apply(auto simp add: perm_swap fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu)[1]
+done
+
+lemma a_redu_ImpR_elim:
+  assumes a: "ImpR (x).<a>.M b \<longrightarrow>\<^isub>a R"
+  shows "\<exists>M'. R = ImpR (x).<a>.M' b \<and> M\<longrightarrow>\<^isub>aM'"
+using a
+apply(erule_tac a_redu.cases, simp_all add: trm.inject)
+apply(erule_tac l_redu.cases, simp_all add: trm.inject)
+apply(erule_tac c_redu.cases, simp_all add: trm.inject)
+apply(auto)
+apply(rotate_tac 2)
+apply(erule_tac a_redu.cases, simp_all add: trm.inject)
+apply(erule_tac l_redu.cases, simp_all add: trm.inject)
+apply(erule_tac c_redu.cases, simp_all add: trm.inject)
+apply(auto simp add: alpha a_redu.eqvt abs_perm abs_fresh)
+apply(rule_tac x="([(a,aa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu perm_swap)
+apply(rule_tac x="([(a,aaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu perm_swap)
+apply(rule_tac x="([(a,aa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu perm_swap)
+apply(rule_tac x="([(a,aaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu perm_swap)
+apply(rule_tac x="([(x,xa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu perm_swap)
+apply(rule_tac x="([(x,xa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu perm_swap)
+apply(rule_tac x="([(a,aa)]\<bullet>[(x,xa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu perm_swap)
+apply(rule sym)
+apply(rule trans)
+apply(rule perm_compose)
+apply(simp add: calc_atm perm_swap)
+apply(rule_tac x="([(a,aaa)]\<bullet>[(x,xa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu perm_swap)
+apply(rule sym)
+apply(rule trans)
+apply(rule perm_compose)
+apply(simp add: calc_atm perm_swap)
+apply(rule_tac x="([(x,xaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu perm_swap)
+apply(rule_tac x="([(x,xaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu perm_swap)
+apply(rule_tac x="([(a,aa)]\<bullet>[(x,xaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu perm_swap)
+apply(rule sym)
+apply(rule trans)
+apply(rule perm_compose)
+apply(simp add: calc_atm perm_swap)
+apply(rule_tac x="([(a,aaa)]\<bullet>[(x,xaa)]\<bullet>M'a)" in exI)
+apply(auto simp add: fresh_left alpha a_redu.eqvt calc_atm fresh_a_redu perm_swap)
+apply(rule sym)
+apply(rule trans)
+apply(rule perm_compose)
+apply(simp add: calc_atm perm_swap)
+done
+
+text {* Transitive Closure*}
+
+abbreviation
+ a_star_redu :: "trm \<Rightarrow> trm \<Rightarrow> bool" ("_ \<longrightarrow>\<^isub>a* _" [100,100] 100)
+where
+  "M \<longrightarrow>\<^isub>a* M' \<equiv> (a_redu)^** M M'"
+
+lemma a_starI:
+  assumes a: "M \<longrightarrow>\<^isub>a M'"
+  shows "M \<longrightarrow>\<^isub>a* M'"
+using a by blast
+
+lemma a_star_refl:
+  shows "M \<longrightarrow>\<^isub>a* M"
+  by blast
+
+lemma a_starE:
+  assumes a: "M \<longrightarrow>\<^isub>a* M'"
+  shows "M = M' \<or> (\<exists>N. M \<longrightarrow>\<^isub>a N \<and> N \<longrightarrow>\<^isub>a* M')"
+using a 
+by (induct) (auto)
+
+lemma a_star_refl:
+  shows "M \<longrightarrow>\<^isub>a* M"
+  by blast
+
+lemma a_star_trans[trans]:
+  assumes a1: "M1\<longrightarrow>\<^isub>a* M2"
+  and     a2: "M2\<longrightarrow>\<^isub>a* M3"
+  shows "M1 \<longrightarrow>\<^isub>a* M3"
+using a2 a1
+by (induct) (auto)
+
+text {* congruence rules for \<longrightarrow>\<^isub>a* *}
+
+lemma ax_do_not_a_star_reduce:
+  shows "Ax x a \<longrightarrow>\<^isub>a* M \<Longrightarrow> M = Ax x a"
+apply(induct set: rtrancl)
+apply(auto)
+apply(drule  ax_do_not_a_reduce)
+apply(simp)
+done
+
+
+lemma a_star_CutL:
+    "M \<longrightarrow>\<^isub>a* M' \<Longrightarrow> Cut <a>.M (x).N \<longrightarrow>\<^isub>a* Cut <a>.M' (x).N"
+by (induct set: rtrancl) (blast intro: rtrancl.rtrancl_into_rtrancl)+
+
+lemma a_star_CutR:
+    "N \<longrightarrow>\<^isub>a* N'\<Longrightarrow> Cut <a>.M (x).N \<longrightarrow>\<^isub>a* Cut <a>.M (x).N'"
+by (induct set: rtrancl) (blast intro: rtrancl.rtrancl_into_rtrancl)+
+
+lemma a_star_Cut:
+    "\<lbrakk>M \<longrightarrow>\<^isub>a* M'; N \<longrightarrow>\<^isub>a* N'\<rbrakk> \<Longrightarrow> Cut <a>.M (x).N \<longrightarrow>\<^isub>a* Cut <a>.M' (x).N'"
+by (blast intro!: a_star_CutL a_star_CutR intro: rtrancl_trans')
+
+lemma a_star_NotR:
+    "M \<longrightarrow>\<^isub>a* M' \<Longrightarrow> NotR (x).M a \<longrightarrow>\<^isub>a* NotR (x).M' a"
+by (induct set: rtrancl) (blast intro: rtrancl.rtrancl_into_rtrancl)+
+
+lemma a_star_NotL:
+    "M \<longrightarrow>\<^isub>a* M' \<Longrightarrow> NotL <a>.M x \<longrightarrow>\<^isub>a* NotL <a>.M' x"
+by (induct set: rtrancl) (blast intro: rtrancl.rtrancl_into_rtrancl)+
+
+lemma a_star_AndRL:
+    "M \<longrightarrow>\<^isub>a* M'\<Longrightarrow> AndR <a>.M <b>.N c \<longrightarrow>\<^isub>a* AndR <a>.M' <b>.N c"
+by (induct set: rtrancl) (blast intro: rtrancl.rtrancl_into_rtrancl)+
+
+lemma a_star_AndRR:
+    "N \<longrightarrow>\<^isub>a* N'\<Longrightarrow> AndR <a>.M <b>.N c \<longrightarrow>\<^isub>a* AndR <a>.M <b>.N' c"
+by (induct set: rtrancl) (blast intro: rtrancl.rtrancl_into_rtrancl)+
+
+lemma a_star_AndR:
+    "\<lbrakk>M \<longrightarrow>\<^isub>a* M'; N \<longrightarrow>\<^isub>a* N'\<rbrakk> \<Longrightarrow> AndR <a>.M <b>.N c \<longrightarrow>\<^isub>a* AndR <a>.M' <b>.N' c"
+by (blast intro!: a_star_AndRL a_star_AndRR intro: rtrancl_trans')
+
+lemma a_star_AndL1:
+    "M \<longrightarrow>\<^isub>a* M' \<Longrightarrow> AndL1 (x).M y \<longrightarrow>\<^isub>a* AndL1 (x).M' y"
+by (induct set: rtrancl) (blast intro: rtrancl.rtrancl_into_rtrancl)+
+
+lemma a_star_AndL2:
+    "M \<longrightarrow>\<^isub>a* M' \<Longrightarrow> AndL2 (x).M y \<longrightarrow>\<^isub>a* AndL2 (x).M' y"
+by (induct set: rtrancl) (blast intro: rtrancl.rtrancl_into_rtrancl)+
+
+lemma a_star_OrLL:
+    "M \<longrightarrow>\<^isub>a* M'\<Longrightarrow> OrL (x).M (y).N z \<longrightarrow>\<^isub>a* OrL (x).M' (y).N z"
+by (induct set: rtrancl) (blast intro: rtrancl.rtrancl_into_rtrancl)+
+
+lemma a_star_OrLR:
+    "N \<longrightarrow>\<^isub>a* N'\<Longrightarrow> OrL (x).M (y).N z \<longrightarrow>\<^isub>a* OrL (x).M (y).N' z"
+by (induct set: rtrancl) (blast intro: rtrancl.rtrancl_into_rtrancl)+
+
+lemma a_star_OrL:
+    "\<lbrakk>M \<longrightarrow>\<^isub>a* M'; N \<longrightarrow>\<^isub>a* N'\<rbrakk> \<Longrightarrow> OrL (x).M (y).N z \<longrightarrow>\<^isub>a* OrL (x).M' (y).N' z"
+by (blast intro!: a_star_OrLL a_star_OrLR intro: rtrancl_trans')
+
+lemma a_star_OrR1:
+    "M \<longrightarrow>\<^isub>a* M' \<Longrightarrow> OrR1 <a>.M b \<longrightarrow>\<^isub>a* OrR1 <a>.M' b"
+by (induct set: rtrancl) (blast intro: rtrancl.rtrancl_into_rtrancl)+
+
+lemma a_star_OrR2:
+    "M \<longrightarrow>\<^isub>a* M' \<Longrightarrow> OrR2 <a>.M b \<longrightarrow>\<^isub>a* OrR2 <a>.M' b"
+by (induct set: rtrancl) (blast intro: rtrancl.rtrancl_into_rtrancl)+
+
+lemma a_star_ImpLL:
+    "M \<longrightarrow>\<^isub>a* M'\<Longrightarrow> ImpL <a>.M (y).N z \<longrightarrow>\<^isub>a* ImpL <a>.M' (y).N z"
+by (induct set: rtrancl) (blast intro: rtrancl.rtrancl_into_rtrancl)+
+
+lemma a_star_ImpLR:
+    "N \<longrightarrow>\<^isub>a* N'\<Longrightarrow> ImpL <a>.M (y).N z \<longrightarrow>\<^isub>a* ImpL <a>.M (y).N' z"
+by (induct set: rtrancl) (blast intro: rtrancl.rtrancl_into_rtrancl)+
+
+lemma a_star_ImpL:
+    "\<lbrakk>M \<longrightarrow>\<^isub>a* M'; N \<longrightarrow>\<^isub>a* N'\<rbrakk> \<Longrightarrow> ImpL <a>.M (y).N z \<longrightarrow>\<^isub>a* ImpL <a>.M' (y).N' z"
+by (blast intro!: a_star_ImpLL a_star_ImpLR intro: rtrancl_trans')
+
+lemma a_star_ImpR:
+    "M \<longrightarrow>\<^isub>a* M' \<Longrightarrow> ImpR (x).<a>.M b \<longrightarrow>\<^isub>a* ImpR (x).<a>.M' b"
+by (induct set: rtrancl) (blast intro: rtrancl.rtrancl_into_rtrancl)+
+
+lemmas a_star_congs = a_star_Cut a_star_NotR a_star_NotL a_star_AndR a_star_AndL1 a_star_AndL2
+                      a_star_OrL a_star_OrR1 a_star_OrR2 a_star_ImpL a_star_ImpR
+
+lemma a_star_redu_NotL_elim:
+  assumes a: "NotL <a>.M x \<longrightarrow>\<^isub>a* R"
+  shows "\<exists>M'. R = NotL <a>.M' x \<and> M \<longrightarrow>\<^isub>a* M'"
+using a
+apply(induct set: rtrancl)
+apply(auto)
+apply(drule a_redu_NotL_elim)
+apply(auto)
+done
+
+lemma a_star_redu_NotR_elim:
+  assumes a: "NotR (x).M a \<longrightarrow>\<^isub>a* R"
+  shows "\<exists>M'. R = NotR (x).M' a \<and> M \<longrightarrow>\<^isub>a* M'"
+using a
+apply(induct set: rtrancl)
+apply(auto)
+apply(drule a_redu_NotR_elim)
+apply(auto)
+done
+
+lemma a_star_redu_AndR_elim:
+  assumes a: "AndR <a>.M <b>.N c\<longrightarrow>\<^isub>a* R"
+  shows "(\<exists>M' N'. R = AndR <a>.M' <b>.N' c \<and> M \<longrightarrow>\<^isub>a* M' \<and> N \<longrightarrow>\<^isub>a* N')"
+using a
+apply(induct set: rtrancl)
+apply(auto)
+apply(drule a_redu_AndR_elim)
+apply(auto simp add: alpha trm.inject)
+done
+
+lemma a_star_redu_AndL1_elim:
+  assumes a: "AndL1 (x).M y \<longrightarrow>\<^isub>a* R"
+  shows "\<exists>M'. R = AndL1 (x).M' y \<and> M \<longrightarrow>\<^isub>a* M'"
+using a
+apply(induct set: rtrancl)
+apply(auto)
+apply(drule a_redu_AndL1_elim)
+apply(auto simp add: alpha trm.inject)
+done
+
+lemma a_star_redu_AndL2_elim:
+  assumes a: "AndL2 (x).M y \<longrightarrow>\<^isub>a* R"
+  shows "\<exists>M'. R = AndL2 (x).M' y \<and> M \<longrightarrow>\<^isub>a* M'"
+using a
+apply(induct set: rtrancl)
+apply(auto)
+apply(drule a_redu_AndL2_elim)
+apply(auto simp add: alpha trm.inject)
+done
+
+lemma a_star_redu_OrL_elim:
+  assumes a: "OrL (x).M (y).N z \<longrightarrow>\<^isub>a* R"
+  shows "(\<exists>M' N'. R = OrL (x).M' (y).N' z \<and> M \<longrightarrow>\<^isub>a* M' \<and> N \<longrightarrow>\<^isub>a* N')"
+using a
+apply(induct set: rtrancl)
+apply(auto)
+apply(drule a_redu_OrL_elim)
+apply(auto simp add: alpha trm.inject)
+done
+
+lemma a_star_redu_OrR1_elim:
+  assumes a: "OrR1 <a>.M y \<longrightarrow>\<^isub>a* R"
+  shows "\<exists>M'. R = OrR1 <a>.M' y \<and> M \<longrightarrow>\<^isub>a* M'"
+using a
+apply(induct set: rtrancl)
+apply(auto)
+apply(drule a_redu_OrR1_elim)
+apply(auto simp add: alpha trm.inject)
+done
+
+lemma a_star_redu_OrR2_elim:
+  assumes a: "OrR2 <a>.M y \<longrightarrow>\<^isub>a* R"
+  shows "\<exists>M'. R = OrR2 <a>.M' y \<and> M \<longrightarrow>\<^isub>a* M'"
+using a
+apply(induct set: rtrancl)
+apply(auto)
+apply(drule a_redu_OrR2_elim)
+apply(auto simp add: alpha trm.inject)
+done
+
+lemma a_star_redu_ImpR_elim:
+  assumes a: "ImpR (x).<a>.M y \<longrightarrow>\<^isub>a* R"
+  shows "\<exists>M'. R = ImpR (x).<a>.M' y \<and> M \<longrightarrow>\<^isub>a* M'"
+using a
+apply(induct set: rtrancl)
+apply(auto)
+apply(drule a_redu_ImpR_elim)
+apply(auto simp add: alpha trm.inject)
+done
+
+lemma a_star_redu_ImpL_elim:
+  assumes a: "ImpL <a>.M (y).N z \<longrightarrow>\<^isub>a* R"
+  shows "(\<exists>M' N'. R = ImpL <a>.M' (y).N' z \<and> M \<longrightarrow>\<^isub>a* M' \<and> N \<longrightarrow>\<^isub>a* N')"
+using a
+apply(induct set: rtrancl)
+apply(auto)
+apply(drule a_redu_ImpL_elim)
+apply(auto simp add: alpha trm.inject)
+done
+
+text {* Substitution *}
+
+lemma subst_not_fin1:
+  shows "\<not>fin(M{x:=<c>.P}) x"
+apply(nominal_induct M avoiding: x c P rule: trm.induct)
+apply(auto)
+apply(drule fin_elims, simp)
+apply(drule fin_elims, simp)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{x:=<c>.P},P)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotL)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{x:=<c>.P},P,name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL1)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{x:=<c>.P},P,name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL2)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{x:=<c>.P},P,name1,trm2{x:=<c>.P},name2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrL)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{name2:=<c>.P},P,name1,trm2{name2:=<c>.P})")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpL)
+apply(erule fin.cases, simp_all add: trm.inject)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(erule fin.cases, simp_all add: trm.inject)
+done
+
+lemma subst_not_fin2:
+  assumes a: "\<not>fin M y"
+  shows "\<not>fin(M{c:=(x).P}) y" 
+using a
+apply(nominal_induct M avoiding: x c P y rule: trm.induct)
+apply(auto)
+apply(drule fin_elims, simp)
+apply(drule fin_elims, simp)
+apply(drule fin_elims, simp)
+apply(subgoal_tac "\<exists>c'::coname. c'\<sharp>(trm{coname:=(x).P},P)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotR)
+apply(drule fin_elims, simp)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(drule fin_elims, simp)
+apply(drule fin_elims, simp)
+apply(auto)[1]
+apply(drule freshn_after_substc)
+apply(simp add: fin.intros)
+apply(subgoal_tac "\<exists>c'::coname. c'\<sharp>(trm1{coname3:=(x).P},P,coname1,trm2{coname3:=(x).P},coname2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndR)
+apply(drule fin_elims, simp)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(drule fin_elims, simp)
+apply(drule fin_elims, simp)
+apply(auto)[1]
+apply(simp add: abs_fresh fresh_atm)
+apply(drule freshn_after_substc)
+apply(simp add: fin.intros abs_fresh)
+apply(drule fin_elims, simp)
+apply(auto)[1]
+apply(simp add: abs_fresh fresh_atm)
+apply(drule freshn_after_substc)
+apply(simp add: fin.intros abs_fresh)
+apply(subgoal_tac "\<exists>c'::coname. c'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR1)
+apply(drule fin_elims, simp)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(drule fin_elims, simp)
+apply(subgoal_tac "\<exists>c'::coname. c'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR2)
+apply(drule fin_elims, simp)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(drule fin_elims, simp)
+apply(drule fin_elims, simp)
+apply(auto)[1]
+apply(simp add: abs_fresh fresh_atm)
+apply(drule freshn_after_substc)
+apply(drule freshn_after_substc)
+apply(simp add: fin.intros abs_fresh)
+apply(subgoal_tac "\<exists>c'::coname. c'\<sharp>(trm{coname2:=(x).P},P,coname1,coname2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpR)
+apply(drule fin_elims, simp)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(drule fin_elims, simp)
+apply(drule fin_elims, simp)
+apply(auto)[1]
+apply(simp add: abs_fresh fresh_atm)
+apply(drule freshn_after_substc)
+apply(drule freshn_after_substc)
+apply(simp add: fin.intros abs_fresh)
+done
+
+lemma subst_not_fic1:
+  shows "\<not>fic (M{a:=(x).P}) a"
+apply(nominal_induct M avoiding: a x P rule: trm.induct)
+apply(auto)
+apply(erule fic.cases, simp_all add: trm.inject)
+apply(erule fic.cases, simp_all add: trm.inject)
+apply(erule fic.cases, simp_all add: trm.inject)
+apply(erule fic.cases, simp_all add: trm.inject)
+apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(trm{coname:=(x).P},P)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotR)
+apply(erule fic.cases, simp_all add: trm.inject)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(erule fic.cases, simp_all add: trm.inject)
+apply(erule fic.cases, simp_all add: trm.inject)
+apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(trm1{coname3:=(x).P},P,trm2{coname3:=(x).P},coname1,coname2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndR)
+apply(erule fic.cases, simp_all add: trm.inject)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(erule fic.cases, simp_all add: trm.inject)
+apply(erule fic.cases, simp_all add: trm.inject)
+apply(erule fic.cases, simp_all add: trm.inject)
+apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR1)
+apply(erule fic.cases, simp_all add: trm.inject)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(erule fic.cases, simp_all add: trm.inject)
+apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR2)
+apply(erule fic.cases, simp_all add: trm.inject)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(erule fic.cases, simp_all add: trm.inject)
+apply(erule fic.cases, simp_all add: trm.inject)
+apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(trm{coname2:=(x).P},P,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpR)
+apply(erule fic.cases, simp_all add: trm.inject)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(erule fic.cases, simp_all add: trm.inject)
+apply(erule fic.cases, simp_all add: trm.inject)
+done
+
+lemma subst_not_fic2:
+  assumes a: "\<not>fic M a"
+  shows "\<not>fic(M{x:=<b>.P}) a" 
+using a
+apply(nominal_induct M avoiding: x a P b rule: trm.induct)
+apply(auto)
+apply(drule fic_elims, simp)
+apply(drule fic_elims, simp)
+apply(drule fic_elims, simp)
+apply(drule fic_elims, simp)
+apply(auto)[1]
+apply(drule freshc_after_substn)
+apply(simp add: fic.intros)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{x:=<b>.P},P)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotL)
+apply(drule fic_elims, simp)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(drule fic_elims, simp)
+apply(drule fic_elims, simp)
+apply(auto)[1]
+apply(simp add: abs_fresh fresh_atm)
+apply(drule freshc_after_substn)
+apply(drule freshc_after_substn)
+apply(simp add: fic.intros abs_fresh)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{x:=<b>.P},P,name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL1)
+apply(drule fic_elims, simp)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(drule fic_elims, simp)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{x:=<b>.P},P,name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL2)
+apply(drule fic_elims, simp)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(drule fic_elims, simp)
+apply(drule fic_elims, simp)
+apply(auto)[1]
+apply(simp add: abs_fresh fresh_atm)
+apply(drule freshc_after_substn)
+apply(simp add: fic.intros abs_fresh)
+apply(drule fic_elims, simp)
+apply(auto)[1]
+apply(simp add: abs_fresh fresh_atm)
+apply(drule freshc_after_substn)
+apply(simp add: fic.intros abs_fresh)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{x:=<b>.P},P,name1,trm2{x:=<b>.P},name2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrL)
+apply(drule fic_elims, simp)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(drule fic_elims, simp)
+apply(drule fic_elims, simp)
+apply(auto)[1]
+apply(simp add: abs_fresh fresh_atm)
+apply(drule freshc_after_substn)
+apply(simp add: fic.intros abs_fresh)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{name2:=<b>.P},trm2{name2:=<b>.P},P,name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpL)
+apply(drule fic_elims, simp)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(drule fic_elims, simp)
+done
+
+text {* Reductions *}
+
+lemma fin_l_reduce:
+  assumes  a: "fin M x"
+  and      b: "M \<longrightarrow>\<^isub>l M'"
+  shows "fin M' x"
+using b a
+apply(induct)
+apply(erule fin.cases)
+apply(simp_all add: trm.inject)
+apply(rotate_tac 3)
+apply(erule fin.cases)
+apply(simp_all add: trm.inject)
+apply(erule fin.cases, simp_all add: trm.inject)+
+done
+
+lemma fin_c_reduce:
+  assumes  a: "fin M x"
+  and      b: "M \<longrightarrow>\<^isub>c M'"
+  shows "fin M' x"
+using b a
+apply(induct)
+apply(erule fin.cases, simp_all add: trm.inject)+
+done
+
+lemma fin_a_reduce:
+  assumes  a: "fin M x"
+  and      b: "M \<longrightarrow>\<^isub>a M'"
+  shows "fin M' x"
+using a b
+apply(induct)
+apply(drule ax_do_not_a_reduce)
+apply(simp)
+apply(drule a_redu_NotL_elim)
+apply(auto)
+apply(rule fin.intros)
+apply(simp add: fresh_a_redu)
+apply(drule a_redu_AndL1_elim)
+apply(auto)
+apply(rule fin.intros)
+apply(force simp add: abs_fresh fresh_a_redu)
+apply(drule a_redu_AndL2_elim)
+apply(auto)
+apply(rule fin.intros)
+apply(force simp add: abs_fresh fresh_a_redu)
+apply(drule a_redu_OrL_elim)
+apply(auto)
+apply(rule fin.intros)
+apply(force simp add: abs_fresh fresh_a_redu)
+apply(force simp add: abs_fresh fresh_a_redu)
+apply(rule fin.intros)
+apply(force simp add: abs_fresh fresh_a_redu)
+apply(force simp add: abs_fresh fresh_a_redu)
+apply(drule a_redu_ImpL_elim)
+apply(auto)
+apply(rule fin.intros)
+apply(force simp add: abs_fresh fresh_a_redu)
+apply(force simp add: abs_fresh fresh_a_redu)
+apply(rule fin.intros)
+apply(force simp add: abs_fresh fresh_a_redu)
+apply(force simp add: abs_fresh fresh_a_redu)
+done
+
+lemma fin_a_star_reduce:
+  assumes  a: "fin M x"
+  and      b: "M \<longrightarrow>\<^isub>a* M'"
+  shows "fin M' x"
+using b a
+apply(induct set: rtrancl)
+apply(auto simp add: fin_a_reduce)
+done
+
+lemma fic_l_reduce:
+  assumes  a: "fic M x"
+  and      b: "M \<longrightarrow>\<^isub>l M'"
+  shows "fic M' x"
+using b a
+apply(induct)
+apply(erule fic.cases)
+apply(simp_all add: trm.inject)
+apply(rotate_tac 3)
+apply(erule fic.cases)
+apply(simp_all add: trm.inject)
+apply(erule fic.cases, simp_all add: trm.inject)+
+done
+
+lemma fic_c_reduce:
+  assumes a: "fic M x"
+  and     b: "M \<longrightarrow>\<^isub>c M'"
+  shows "fic M' x"
+using b a
+apply(induct)
+apply(erule fic.cases, simp_all add: trm.inject)+
+done
+
+lemma fic_a_reduce:
+  assumes a: "fic M x"
+  and     b: "M \<longrightarrow>\<^isub>a M'"
+  shows "fic M' x"
+using a b
+apply(induct)
+apply(drule ax_do_not_a_reduce)
+apply(simp)
+apply(drule a_redu_NotR_elim)
+apply(auto)
+apply(rule fic.intros)
+apply(simp add: fresh_a_redu)
+apply(drule a_redu_AndR_elim)
+apply(auto)
+apply(rule fic.intros)
+apply(force simp add: abs_fresh fresh_a_redu)
+apply(force simp add: abs_fresh fresh_a_redu)
+apply(rule fic.intros)
+apply(force simp add: abs_fresh fresh_a_redu)
+apply(force simp add: abs_fresh fresh_a_redu)
+apply(drule a_redu_OrR1_elim)
+apply(auto)
+apply(rule fic.intros)
+apply(force simp add: abs_fresh fresh_a_redu)
+apply(drule a_redu_OrR2_elim)
+apply(auto)
+apply(rule fic.intros)
+apply(force simp add: abs_fresh fresh_a_redu)
+apply(drule a_redu_ImpR_elim)
+apply(auto)
+apply(rule fic.intros)
+apply(force simp add: abs_fresh fresh_a_redu)
+done
+
+lemma fic_a_star_reduce:
+  assumes  a: "fic M x"
+  and      b: "M \<longrightarrow>\<^isub>a* M'"
+  shows "fic M' x"
+using b a
+apply(induct set: rtrancl)
+apply(auto simp add: fic_a_reduce)
+done
+
+text {* substitution properties *}
+
+lemma subst_with_ax1:
+  shows "M{x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* M[x\<turnstile>n>y]"
+proof(nominal_induct M avoiding: x a y rule: trm.induct)
+  case (Ax z b x a y)
+  show "(Ax z b){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (Ax z b)[x\<turnstile>n>y]"
+  proof (cases "z=x")
+    case True
+    assume eq: "z=x"
+    have "(Ax z b){x:=<a>.Ax y a} = Cut <a>.Ax y a (x).Ax x b" using eq by simp
+    also have "\<dots> \<longrightarrow>\<^isub>a* (Ax x b)[x\<turnstile>n>y]" by blast
+    finally show "Ax z b{x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (Ax z b)[x\<turnstile>n>y]" using eq by simp
+  next
+    case False
+    assume neq: "z\<noteq>x"
+    then show "(Ax z b){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (Ax z b)[x\<turnstile>n>y]" using neq by simp
+  qed
+next
+  case (Cut b M z N x a y)
+  have fs: "b\<sharp>x" "b\<sharp>a" "b\<sharp>y" "b\<sharp>N" "z\<sharp>x" "z\<sharp>a" "z\<sharp>y" "z\<sharp>M" by fact
+  have ih1: "M{x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* M[x\<turnstile>n>y]" by fact
+  have ih2: "N{x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* N[x\<turnstile>n>y]" by fact
+  show "(Cut <b>.M (z).N){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (Cut <b>.M (z).N)[x\<turnstile>n>y]"
+  proof (cases "M = Ax x b")
+    case True
+    assume eq: "M = Ax x b"
+    have "(Cut <b>.M (z).N){x:=<a>.Ax y a} = Cut <a>.Ax y a (z).(N{x:=<a>.Ax y a})" using fs eq by simp
+    also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.Ax y a (z).(N[x\<turnstile>n>y])" using ih2 a_star_congs by blast
+    also have "\<dots> = Cut <b>.(M[x\<turnstile>n>y]) (z).(N[x\<turnstile>n>y])" using eq
+      by (simp add: trm.inject alpha calc_atm fresh_atm)
+    finally show "(Cut <b>.M (z).N){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (Cut <b>.M (z).N)[x\<turnstile>n>y]" using fs by simp
+  next
+    case False
+    assume neq: "M \<noteq> Ax x b"
+    have "(Cut <b>.M (z).N){x:=<a>.Ax y a} = Cut <b>.(M{x:=<a>.Ax y a}) (z).(N{x:=<a>.Ax y a})" 
+      using fs neq by simp
+    also have "\<dots> \<longrightarrow>\<^isub>a* Cut <b>.(M[x\<turnstile>n>y]) (z).(N[x\<turnstile>n>y])" using ih1 ih2 a_star_congs by blast
+    finally show "(Cut <b>.M (z).N){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (Cut <b>.M (z).N)[x\<turnstile>n>y]" using fs by simp
+  qed
+next
+  case (NotR z M b x a y)
+  have fs: "z\<sharp>x" "z\<sharp>a" "z\<sharp>y" "z\<sharp>b" by fact
+  have ih: "M{x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* M[x\<turnstile>n>y]" by fact
+  have "(NotR (z).M b){x:=<a>.Ax y a} = NotR (z).(M{x:=<a>.Ax y a}) b" using fs by simp
+  also have "\<dots> \<longrightarrow>\<^isub>a* NotR (z).(M[x\<turnstile>n>y]) b" using ih by (auto intro: a_star_congs)
+  finally show "(NotR (z).M b){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (NotR (z).M b)[x\<turnstile>n>y]" using fs by simp
+next
+  case (NotL b M z x a y)  
+  have fs: "b\<sharp>x" "b\<sharp>a" "b\<sharp>y" "b\<sharp>z" by fact
+  have ih: "M{x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* M[x\<turnstile>n>y]" by fact
+  show "(NotL <b>.M z){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (NotL <b>.M z)[x\<turnstile>n>y]"
+  proof(cases "z=x")
+    case True
+    assume eq: "z=x"
+    obtain x'::"name" where new: "x'\<sharp>(Ax y a,M{x:=<a>.Ax y a})" by (rule exists_fresh(1)[OF fs_name1])
+    have "(NotL <b>.M z){x:=<a>.Ax y a} = 
+                        fresh_fun (\<lambda>x'. Cut <a>.Ax y a (x').NotL <b>.(M{x:=<a>.Ax y a}) x')"
+      using eq fs by simp
+    also have "\<dots> = Cut <a>.Ax y a (x').NotL <b>.(M{x:=<a>.Ax y a}) x'" 
+      using new by (simp add: fresh_fun_simp_NotL fresh_prod)
+    also have "\<dots> \<longrightarrow>\<^isub>a* (NotL <b>.(M{x:=<a>.Ax y a}) x')[x'\<turnstile>n>y]"
+      using new 
+      apply(rule_tac a_starI)
+      apply(rule al_redu)
+      apply(rule better_LAxL_intro)
+      apply(auto)
+      done
+    also have "\<dots> = NotL <b>.(M{x:=<a>.Ax y a}) y" using new by (simp add: nrename_fresh)
+    also have "\<dots> \<longrightarrow>\<^isub>a* NotL <b>.(M[x\<turnstile>n>y]) y" using ih by (auto intro: a_star_congs)
+    also have "\<dots> = (NotL <b>.M z)[x\<turnstile>n>y]" using eq by simp
+    finally show "(NotL <b>.M z){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (NotL <b>.M z)[x\<turnstile>n>y]" by simp
+  next
+    case False
+    assume neq: "z\<noteq>x"
+    have "(NotL <b>.M z){x:=<a>.Ax y a} = NotL <b>.(M{x:=<a>.Ax y a}) z" using fs neq by simp
+    also have "\<dots> \<longrightarrow>\<^isub>a* NotL <b>.(M[x\<turnstile>n>y]) z" using ih by (auto intro: a_star_congs)
+    finally show "(NotL <b>.M z){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (NotL <b>.M z)[x\<turnstile>n>y]" using neq by simp
+  qed
+next
+  case (AndR c M d N e x a y)
+  have fs: "c\<sharp>x" "c\<sharp>a" "c\<sharp>y" "d\<sharp>x" "d\<sharp>a" "d\<sharp>y" "d\<noteq>c" "c\<sharp>N" "c\<sharp>e" "d\<sharp>M" "d\<sharp>e" by fact
+  have ih1: "M{x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* M[x\<turnstile>n>y]" by fact
+  have ih2: "N{x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* N[x\<turnstile>n>y]" by fact
+  have "(AndR <c>.M <d>.N e){x:=<a>.Ax y a} = AndR <c>.(M{x:=<a>.Ax y a}) <d>.(N{x:=<a>.Ax y a}) e"
+    using fs by simp
+  also have "\<dots> \<longrightarrow>\<^isub>a* AndR <c>.(M[x\<turnstile>n>y]) <d>.(N[x\<turnstile>n>y]) e" using ih1 ih2 by (auto intro: a_star_congs)
+  finally show "(AndR <c>.M <d>.N e){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (AndR <c>.M <d>.N e)[x\<turnstile>n>y]"
+    using fs by simp
+next
+  case (AndL1 u M v x a y)
+  have fs: "u\<sharp>x" "u\<sharp>a" "u\<sharp>y" "u\<sharp>v" by fact
+  have ih: "M{x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* M[x\<turnstile>n>y]" by fact
+  show "(AndL1 (u).M v){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (AndL1 (u).M v)[x\<turnstile>n>y]"
+  proof(cases "v=x")
+    case True
+    assume eq: "v=x"
+    obtain v'::"name" where new: "v'\<sharp>(Ax y a,M{x:=<a>.Ax y a},u)" by (rule exists_fresh(1)[OF fs_name1])
+    have "(AndL1 (u).M v){x:=<a>.Ax y a} = 
+                        fresh_fun (\<lambda>v'. Cut <a>.Ax y a (v').AndL1 (u).(M{x:=<a>.Ax y a}) v')"
+      using eq fs by simp
+    also have "\<dots> = Cut <a>.Ax y a (v').AndL1 (u).(M{x:=<a>.Ax y a}) v'" 
+      using new by (simp add: fresh_fun_simp_AndL1 fresh_prod)
+    also have "\<dots> \<longrightarrow>\<^isub>a* (AndL1 (u).(M{x:=<a>.Ax y a}) v')[v'\<turnstile>n>y]"
+      using new 
+      apply(rule_tac a_starI)
+      apply(rule a_redu.intros)
+      apply(rule better_LAxL_intro)
+      apply(rule fin.intros)
+      apply(simp add: abs_fresh)
+      done
+    also have "\<dots> = AndL1 (u).(M{x:=<a>.Ax y a}) y" using fs new
+      by (auto simp add: fresh_prod fresh_atm nrename_fresh)
+    also have "\<dots> \<longrightarrow>\<^isub>a* AndL1 (u).(M[x\<turnstile>n>y]) y" using ih by (auto intro: a_star_congs)
+    also have "\<dots> = (AndL1 (u).M v)[x\<turnstile>n>y]" using eq fs by simp
+    finally show "(AndL1 (u).M v){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (AndL1 (u).M v)[x\<turnstile>n>y]" by simp
+  next
+    case False
+    assume neq: "v\<noteq>x"
+    have "(AndL1 (u).M v){x:=<a>.Ax y a} = AndL1 (u).(M{x:=<a>.Ax y a}) v" using fs neq by simp
+    also have "\<dots> \<longrightarrow>\<^isub>a* AndL1 (u).(M[x\<turnstile>n>y]) v" using ih by (auto intro: a_star_congs)
+    finally show "(AndL1 (u).M v){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (AndL1 (u).M v)[x\<turnstile>n>y]" using fs neq by simp
+  qed
+next
+  case (AndL2 u M v x a y)
+  have fs: "u\<sharp>x" "u\<sharp>a" "u\<sharp>y" "u\<sharp>v" by fact
+  have ih: "M{x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* M[x\<turnstile>n>y]" by fact
+  show "(AndL2 (u).M v){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (AndL2 (u).M v)[x\<turnstile>n>y]"
+  proof(cases "v=x")
+    case True
+    assume eq: "v=x"
+    obtain v'::"name" where new: "v'\<sharp>(Ax y a,M{x:=<a>.Ax y a},u)" by (rule exists_fresh(1)[OF fs_name1])
+    have "(AndL2 (u).M v){x:=<a>.Ax y a} = 
+                        fresh_fun (\<lambda>v'. Cut <a>.Ax y a (v').AndL2 (u).(M{x:=<a>.Ax y a}) v')"
+      using eq fs by simp
+    also have "\<dots> = Cut <a>.Ax y a (v').AndL2 (u).(M{x:=<a>.Ax y a}) v'" 
+      using new by (simp add: fresh_fun_simp_AndL2 fresh_prod)
+    also have "\<dots> \<longrightarrow>\<^isub>a* (AndL2 (u).(M{x:=<a>.Ax y a}) v')[v'\<turnstile>n>y]"
+      using new 
+      apply(rule_tac a_starI)
+      apply(rule a_redu.intros)
+      apply(rule better_LAxL_intro)
+      apply(rule fin.intros)
+      apply(simp add: abs_fresh)
+      done
+    also have "\<dots> = AndL2 (u).(M{x:=<a>.Ax y a}) y" using fs new
+      by (auto simp add: fresh_prod fresh_atm nrename_fresh)
+    also have "\<dots> \<longrightarrow>\<^isub>a* AndL2 (u).(M[x\<turnstile>n>y]) y" using ih by (auto intro: a_star_congs)
+    also have "\<dots> = (AndL2 (u).M v)[x\<turnstile>n>y]" using eq fs by simp
+    finally show "(AndL2 (u).M v){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (AndL2 (u).M v)[x\<turnstile>n>y]" by simp
+  next
+    case False
+    assume neq: "v\<noteq>x"
+    have "(AndL2 (u).M v){x:=<a>.Ax y a} = AndL2 (u).(M{x:=<a>.Ax y a}) v" using fs neq by simp
+    also have "\<dots> \<longrightarrow>\<^isub>a* AndL2 (u).(M[x\<turnstile>n>y]) v" using ih by (auto intro: a_star_congs)
+    finally show "(AndL2 (u).M v){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (AndL2 (u).M v)[x\<turnstile>n>y]" using fs neq by simp
+  qed
+next
+  case (OrR1 c M d  x a y)
+  have fs: "c\<sharp>x" "c\<sharp>a" "c\<sharp>y" "c\<sharp>d" by fact
+  have ih: "M{x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* M[x\<turnstile>n>y]" by fact
+  have "(OrR1 <c>.M d){x:=<a>.Ax y a} = OrR1 <c>.(M{x:=<a>.Ax y a}) d" using fs by (simp add: fresh_atm)
+  also have "\<dots> \<longrightarrow>\<^isub>a* OrR1 <c>.(M[x\<turnstile>n>y]) d" using ih by (auto intro: a_star_congs)
+  finally show "(OrR1 <c>.M d){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (OrR1 <c>.M d)[x\<turnstile>n>y]" using fs by simp
+next
+  case (OrR2 c M d  x a y)
+  have fs: "c\<sharp>x" "c\<sharp>a" "c\<sharp>y" "c\<sharp>d" by fact
+  have ih: "M{x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* M[x\<turnstile>n>y]" by fact
+  have "(OrR2 <c>.M d){x:=<a>.Ax y a} = OrR2 <c>.(M{x:=<a>.Ax y a}) d" using fs by (simp add: fresh_atm)
+  also have "\<dots> \<longrightarrow>\<^isub>a* OrR2 <c>.(M[x\<turnstile>n>y]) d" using ih by (auto intro: a_star_congs)
+  finally show "(OrR2 <c>.M d){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (OrR2 <c>.M d)[x\<turnstile>n>y]" using fs by simp
+next
+  case (OrL u M v N z x a y)
+  have fs: "u\<sharp>x" "u\<sharp>a" "u\<sharp>y" "v\<sharp>x" "v\<sharp>a" "v\<sharp>y" "v\<noteq>u" "u\<sharp>N" "u\<sharp>z" "v\<sharp>M" "v\<sharp>z" by fact
+  have ih1: "M{x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* M[x\<turnstile>n>y]" by fact
+  have ih2: "N{x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* N[x\<turnstile>n>y]" by fact
+  show "(OrL (u).M (v).N z){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (OrL (u).M (v).N z)[x\<turnstile>n>y]"
+  proof(cases "z=x")
+    case True
+    assume eq: "z=x"
+    obtain z'::"name" where new: "z'\<sharp>(Ax y a,M{x:=<a>.Ax y a},N{x:=<a>.Ax y a},u,v,y,a)" 
+      by (rule exists_fresh(1)[OF fs_name1])
+    have "(OrL (u).M (v).N z){x:=<a>.Ax y a} = 
+                 fresh_fun (\<lambda>z'. Cut <a>.Ax y a (z').OrL (u).(M{x:=<a>.Ax y a}) (v).(N{x:=<a>.Ax y a}) z')"
+      using eq fs by simp
+    also have "\<dots> = Cut <a>.Ax y a (z').OrL (u).(M{x:=<a>.Ax y a}) (v).(N{x:=<a>.Ax y a}) z'" 
+      using new by (simp add: fresh_fun_simp_OrL)
+    also have "\<dots> \<longrightarrow>\<^isub>a* (OrL (u).(M{x:=<a>.Ax y a}) (v).(N{x:=<a>.Ax y a}) z')[z'\<turnstile>n>y]"
+      using new 
+      apply(rule_tac a_starI)
+      apply(rule a_redu.intros)
+      apply(rule better_LAxL_intro)
+      apply(rule fin.intros)
+      apply(simp_all add: abs_fresh)
+      done
+    also have "\<dots> = OrL (u).(M{x:=<a>.Ax y a}) (v).(N{x:=<a>.Ax y a}) y" using fs new
+      by (auto simp add: fresh_prod fresh_atm nrename_fresh subst_fresh)
+    also have "\<dots> \<longrightarrow>\<^isub>a* OrL (u).(M[x\<turnstile>n>y]) (v).(N[x\<turnstile>n>y]) y" 
+      using ih1 ih2 by (auto intro: a_star_congs)
+    also have "\<dots> = (OrL (u).M (v).N z)[x\<turnstile>n>y]" using eq fs by simp
+    finally show "(OrL (u).M (v).N z){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (OrL (u).M (v).N z)[x\<turnstile>n>y]" by simp
+  next
+    case False
+    assume neq: "z\<noteq>x"
+    have "(OrL (u).M (v).N z){x:=<a>.Ax y a} = OrL (u).(M{x:=<a>.Ax y a}) (v).(N{x:=<a>.Ax y a}) z" 
+      using fs neq by simp
+    also have "\<dots> \<longrightarrow>\<^isub>a* OrL (u).(M[x\<turnstile>n>y]) (v).(N[x\<turnstile>n>y]) z" 
+      using ih1 ih2 by (auto intro: a_star_congs)
+    finally show "(OrL (u).M (v).N z){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (OrL (u).M (v).N z)[x\<turnstile>n>y]" using fs neq by simp
+  qed
+next
+  case (ImpR z c M d x a y)
+  have fs: "z\<sharp>x" "z\<sharp>a" "z\<sharp>y" "c\<sharp>x" "c\<sharp>a" "c\<sharp>y" "z\<sharp>d" "c\<sharp>d" by fact
+  have ih: "M{x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* M[x\<turnstile>n>y]" by fact
+  have "(ImpR (z).<c>.M d){x:=<a>.Ax y a} = ImpR (z).<c>.(M{x:=<a>.Ax y a}) d" using fs by simp
+  also have "\<dots> \<longrightarrow>\<^isub>a* ImpR (z).<c>.(M[x\<turnstile>n>y]) d" using ih by (auto intro: a_star_congs)
+  finally show "(ImpR (z).<c>.M d){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (ImpR (z).<c>.M d)[x\<turnstile>n>y]" using fs by simp
+next
+  case (ImpL c M u N v x a y)
+  have fs: "c\<sharp>x" "c\<sharp>a" "c\<sharp>y" "u\<sharp>x" "u\<sharp>a" "u\<sharp>y" "c\<sharp>N" "c\<sharp>v" "u\<sharp>M" "u\<sharp>v" by fact
+  have ih1: "M{x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* M[x\<turnstile>n>y]" by fact
+  have ih2: "N{x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* N[x\<turnstile>n>y]" by fact
+  show "(ImpL <c>.M (u).N v){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (ImpL <c>.M (u).N v)[x\<turnstile>n>y]"
+  proof(cases "v=x")
+    case True
+    assume eq: "v=x"
+    obtain v'::"name" where new: "v'\<sharp>(Ax y a,M{x:=<a>.Ax y a},N{x:=<a>.Ax y a},y,a,u)" 
+      by (rule exists_fresh(1)[OF fs_name1])
+    have "(ImpL <c>.M (u).N v){x:=<a>.Ax y a} = 
+                 fresh_fun (\<lambda>v'. Cut <a>.Ax y a (v').ImpL <c>.(M{x:=<a>.Ax y a}) (u).(N{x:=<a>.Ax y a}) v')"
+      using eq fs by simp 
+    also have "\<dots> = Cut <a>.Ax y a (v').ImpL <c>.(M{x:=<a>.Ax y a}) (u).(N{x:=<a>.Ax y a}) v'" 
+      using new by (simp add: fresh_fun_simp_ImpL)
+    also have "\<dots> \<longrightarrow>\<^isub>a* (ImpL <c>.(M{x:=<a>.Ax y a}) (u).(N{x:=<a>.Ax y a}) v')[v'\<turnstile>n>y]"
+      using new 
+      apply(rule_tac a_starI)
+      apply(rule a_redu.intros)
+      apply(rule better_LAxL_intro)
+      apply(rule fin.intros)
+      apply(simp_all add: abs_fresh)
+      done
+    also have "\<dots> = ImpL <c>.(M{x:=<a>.Ax y a}) (u).(N{x:=<a>.Ax y a}) y" using fs new
+      by (auto simp add: fresh_prod subst_fresh fresh_atm trm.inject alpha rename_fresh)
+    also have "\<dots> \<longrightarrow>\<^isub>a* ImpL <c>.(M[x\<turnstile>n>y]) (u).(N[x\<turnstile>n>y]) y" 
+      using ih1 ih2 by (auto intro: a_star_congs)
+    also have "\<dots> = (ImpL <c>.M (u).N v)[x\<turnstile>n>y]" using eq fs by simp
+    finally show "(ImpL <c>.M (u).N v){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (ImpL <c>.M (u).N v)[x\<turnstile>n>y]" using fs by simp
+  next
+    case False
+    assume neq: "v\<noteq>x"
+    have "(ImpL <c>.M (u).N v){x:=<a>.Ax y a} = ImpL <c>.(M{x:=<a>.Ax y a}) (u).(N{x:=<a>.Ax y a}) v" 
+      using fs neq by simp
+    also have "\<dots> \<longrightarrow>\<^isub>a* ImpL <c>.(M[x\<turnstile>n>y]) (u).(N[x\<turnstile>n>y]) v" 
+      using ih1 ih2 by (auto intro: a_star_congs)
+    finally show "(ImpL <c>.M (u).N v){x:=<a>.Ax y a} \<longrightarrow>\<^isub>a* (ImpL <c>.M (u).N v)[x\<turnstile>n>y]" 
+      using fs neq by simp
+  qed
+qed
+
+lemma subst_with_ax2:
+  shows "M{b:=(x).Ax x a} \<longrightarrow>\<^isub>a* M[b\<turnstile>c>a]"
+proof(nominal_induct M avoiding: b a x rule: trm.induct)
+  case (Ax z c b a x)
+  show "(Ax z c){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (Ax z c)[b\<turnstile>c>a]"
+  proof (cases "c=b")
+    case True
+    assume eq: "c=b"
+    have "(Ax z c){b:=(x).Ax x a} = Cut <b>.Ax z c (x).Ax x a" using eq by simp
+    also have "\<dots> \<longrightarrow>\<^isub>a* (Ax z c)[b\<turnstile>c>a]" using eq by blast
+    finally show "(Ax z c){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (Ax z c)[b\<turnstile>c>a]" by simp
+  next
+    case False
+    assume neq: "c\<noteq>b"
+    then show "(Ax z c){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (Ax z c)[b\<turnstile>c>a]" by simp
+  qed
+next
+  case (Cut c M z N b a x)
+  have fs: "c\<sharp>b" "c\<sharp>a" "c\<sharp>x" "c\<sharp>N" "z\<sharp>b" "z\<sharp>a" "z\<sharp>x" "z\<sharp>M" by fact
+  have ih1: "M{b:=(x).Ax x a} \<longrightarrow>\<^isub>a* M[b\<turnstile>c>a]" by fact
+  have ih2: "N{b:=(x).Ax x a} \<longrightarrow>\<^isub>a* N[b\<turnstile>c>a]" by fact
+  show "(Cut <c>.M (z).N){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (Cut <c>.M (z).N)[b\<turnstile>c>a]"
+  proof (cases "N = Ax z b")
+    case True
+    assume eq: "N = Ax z b"
+    have "(Cut <c>.M (z).N){b:=(x).Ax x a} = Cut <c>.(M{b:=(x).Ax x a}) (x).Ax x a" using eq fs by simp 
+    also have "\<dots> \<longrightarrow>\<^isub>a* Cut <c>.(M[b\<turnstile>c>a]) (x).Ax x a" using ih1 a_star_congs by blast
+    also have "\<dots> = Cut <c>.(M[b\<turnstile>c>a]) (z).(N[b\<turnstile>c>a])" using eq fs
+      by (simp add: trm.inject alpha calc_atm fresh_atm)
+    finally show "(Cut <c>.M (z).N){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (Cut <c>.M (z).N)[b\<turnstile>c>a]" using fs by simp
+  next
+    case False
+    assume neq: "N \<noteq> Ax z b"
+    have "(Cut <c>.M (z).N){b:=(x).Ax x a} = Cut <c>.(M{b:=(x).Ax x a}) (z).(N{b:=(x).Ax x a})" 
+      using fs neq by simp
+    also have "\<dots> \<longrightarrow>\<^isub>a* Cut <c>.(M[b\<turnstile>c>a]) (z).(N[b\<turnstile>c>a])" using ih1 ih2 a_star_congs by blast
+    finally show "(Cut <c>.M (z).N){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (Cut <c>.M (z).N)[b\<turnstile>c>a]" using fs by simp
+  qed
+next
+  case (NotR z M c b a x)
+  have fs: "z\<sharp>b" "z\<sharp>a" "z\<sharp>x" "z\<sharp>c" by fact
+  have ih: "M{b:=(x).Ax x a} \<longrightarrow>\<^isub>a* M[b\<turnstile>c>a]" by fact
+  show "(NotR (z).M c){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (NotR (z).M c)[b\<turnstile>c>a]"
+  proof (cases "c=b")
+    case True
+    assume eq: "c=b"
+    obtain a'::"coname" where new: "a'\<sharp>(Ax x a,M{b:=(x).Ax x a})" by (rule exists_fresh(2)[OF fs_coname1])
+    have "(NotR (z).M c){b:=(x).Ax x a} = 
+                        fresh_fun (\<lambda>a'. Cut <a'>.NotR (z).M{b:=(x).Ax x a} a' (x).Ax x a)" 
+      using eq fs by simp
+    also have "\<dots> = Cut <a'>.NotR (z).M{b:=(x).Ax x a} a' (x).Ax x a"
+      using new by (simp add: fresh_fun_simp_NotR fresh_prod)
+    also have "\<dots> \<longrightarrow>\<^isub>a* (NotR (z).(M{b:=(x).Ax x a}) a')[a'\<turnstile>c>a]"
+      using new 
+      apply(rule_tac a_starI)
+      apply(rule a_redu.intros)
+      apply(rule better_LAxR_intro)
+      apply(rule fic.intros)
+      apply(simp)
+      done
+    also have "\<dots> = NotR (z).(M{b:=(x).Ax x a}) a" using new by (simp add: crename_fresh)
+    also have "\<dots> \<longrightarrow>\<^isub>a* NotR (z).(M[b\<turnstile>c>a]) a" using ih by (auto intro: a_star_congs)
+    also have "\<dots> = (NotR (z).M c)[b\<turnstile>c>a]" using eq by simp
+    finally show "(NotR (z).M c){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (NotR (z).M c)[b\<turnstile>c>a]" by simp
+  next
+    case False
+    assume neq: "c\<noteq>b"
+    have "(NotR (z).M c){b:=(x).Ax x a} = NotR (z).(M{b:=(x).Ax x a}) c" using fs neq by simp
+    also have "\<dots> \<longrightarrow>\<^isub>a* NotR (z).(M[b\<turnstile>c>a]) c" using ih by (auto intro: a_star_congs)
+    finally show "(NotR (z).M c){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (NotR (z).M c)[b\<turnstile>c>a]" using neq by simp
+  qed
+next
+  case (NotL c M z b a x)  
+  have fs: "c\<sharp>b" "c\<sharp>a" "c\<sharp>x" "c\<sharp>z" by fact
+  have ih: "M{b:=(x).Ax x a} \<longrightarrow>\<^isub>a* M[b\<turnstile>c>a]" by fact
+  have "(NotL <c>.M z){b:=(x).Ax x a} = NotL <c>.(M{b:=(x).Ax x a}) z" using fs by simp
+  also have "\<dots> \<longrightarrow>\<^isub>a* NotL <c>.(M[b\<turnstile>c>a]) z" using ih by (auto intro: a_star_congs)
+  finally show "(NotL <c>.M z){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (NotL <c>.M z)[b\<turnstile>c>a]" using fs by simp
+next
+  case (AndR c M d N e b a x)
+  have fs: "c\<sharp>b" "c\<sharp>a" "c\<sharp>x" "d\<sharp>b" "d\<sharp>a" "d\<sharp>x" "d\<noteq>c" "c\<sharp>N" "c\<sharp>e" "d\<sharp>M" "d\<sharp>e" by fact
+  have ih1: "M{b:=(x).Ax x a} \<longrightarrow>\<^isub>a* M[b\<turnstile>c>a]" by fact
+  have ih2: "N{b:=(x).Ax x a} \<longrightarrow>\<^isub>a* N[b\<turnstile>c>a]" by fact
+  show "(AndR <c>.M <d>.N e){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (AndR <c>.M <d>.N e)[b\<turnstile>c>a]"
+  proof(cases "e=b")
+    case True
+    assume eq: "e=b"
+    obtain e'::"coname" where new: "e'\<sharp>(Ax x a,M{b:=(x).Ax x a},N{b:=(x).Ax x a},c,d)" 
+      by (rule exists_fresh(2)[OF fs_coname1])
+    have "(AndR <c>.M <d>.N e){b:=(x).Ax x a} = 
+               fresh_fun (\<lambda>e'. Cut <e'>.AndR <c>.(M{b:=(x).Ax x a}) <d>.(N{b:=(x).Ax x a}) e' (x).Ax x a)"
+      using eq fs by simp
+    also have "\<dots> = Cut <e'>.AndR <c>.(M{b:=(x).Ax x a}) <d>.(N{b:=(x).Ax x a}) e' (x).Ax x a"
+      using new by (simp add: fresh_fun_simp_AndR fresh_prod)
+    also have "\<dots> \<longrightarrow>\<^isub>a* (AndR <c>.(M{b:=(x).Ax x a}) <d>.(N{b:=(x).Ax x a}) e')[e'\<turnstile>c>a]"
+      using new 
+      apply(rule_tac a_starI)
+      apply(rule a_redu.intros)
+      apply(rule better_LAxR_intro)
+      apply(rule fic.intros)
+      apply(simp_all add: abs_fresh)
+      done
+    also have "\<dots> = AndR <c>.(M{b:=(x).Ax x a}) <d>.(N{b:=(x).Ax x a}) a" using fs new
+      by (auto simp add: fresh_prod fresh_atm subst_fresh crename_fresh)
+    also have "\<dots> \<longrightarrow>\<^isub>a* AndR <c>.(M[b\<turnstile>c>a]) <d>.(N[b\<turnstile>c>a]) a" using ih1 ih2 by (auto intro: a_star_congs)
+    also have "\<dots> = (AndR <c>.M <d>.N e)[b\<turnstile>c>a]" using eq fs by simp
+    finally show "(AndR <c>.M <d>.N e){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (AndR <c>.M <d>.N e)[b\<turnstile>c>a]" by simp
+  next
+    case False
+    assume neq: "e\<noteq>b"
+    have "(AndR <c>.M <d>.N e){b:=(x).Ax x a} = AndR <c>.(M{b:=(x).Ax x a}) <d>.(N{b:=(x).Ax x a}) e"
+      using fs neq by simp
+    also have "\<dots> \<longrightarrow>\<^isub>a* AndR <c>.(M[b\<turnstile>c>a]) <d>.(N[b\<turnstile>c>a]) e" using ih1 ih2 by (auto intro: a_star_congs)
+    finally show "(AndR <c>.M <d>.N e){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (AndR <c>.M <d>.N e)[b\<turnstile>c>a]"
+      using fs neq by simp
+  qed
+next
+  case (AndL1 u M v b a x)
+  have fs: "u\<sharp>b" "u\<sharp>a" "u\<sharp>x" "u\<sharp>v" by fact
+  have ih: "M{b:=(x).Ax x a} \<longrightarrow>\<^isub>a* M[b\<turnstile>c>a]" by fact
+  have "(AndL1 (u).M v){b:=(x).Ax x a} = AndL1 (u).(M{b:=(x).Ax x a}) v" using fs by simp
+  also have "\<dots> \<longrightarrow>\<^isub>a* AndL1 (u).(M[b\<turnstile>c>a]) v" using ih by (auto intro: a_star_congs)
+  finally show "(AndL1 (u).M v){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (AndL1 (u).M v)[b\<turnstile>c>a]" using fs by simp
+next
+  case (AndL2 u M v b a x)
+  have fs: "u\<sharp>b" "u\<sharp>a" "u\<sharp>x" "u\<sharp>v" by fact
+  have ih: "M{b:=(x).Ax x a} \<longrightarrow>\<^isub>a* M[b\<turnstile>c>a]" by fact
+  have "(AndL2 (u).M v){b:=(x).Ax x a} = AndL2 (u).(M{b:=(x).Ax x a}) v" using fs by simp
+  also have "\<dots> \<longrightarrow>\<^isub>a* AndL2 (u).(M[b\<turnstile>c>a]) v" using ih by (auto intro: a_star_congs)
+  finally show "(AndL2 (u).M v){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (AndL2 (u).M v)[b\<turnstile>c>a]" using fs by simp
+next
+  case (OrR1 c M d  b a x)
+  have fs: "c\<sharp>b" "c\<sharp>a" "c\<sharp>x" "c\<sharp>d" by fact
+  have ih: "M{b:=(x).Ax x a} \<longrightarrow>\<^isub>a* M[b\<turnstile>c>a]" by fact
+  show "(OrR1 <c>.M d){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (OrR1 <c>.M d)[b\<turnstile>c>a]"
+  proof(cases "d=b")
+    case True
+    assume eq: "d=b"
+    obtain a'::"coname" where new: "a'\<sharp>(Ax x a,M{b:=(x).Ax x a},c,x,a)" 
+      by (rule exists_fresh(2)[OF fs_coname1])
+    have "(OrR1 <c>.M d){b:=(x).Ax x a} = 
+             fresh_fun (\<lambda>a'. Cut <a'>.OrR1 <c>.M{b:=(x).Ax x a} a' (x).Ax x a)" using fs eq by (simp)
+    also have "\<dots> = Cut <a'>.OrR1 <c>.M{b:=(x).Ax x a} a' (x).Ax x a"
+      using new by (simp add: fresh_fun_simp_OrR1)
+    also have "\<dots> \<longrightarrow>\<^isub>a* (OrR1 <c>.M{b:=(x).Ax x a} a')[a'\<turnstile>c>a]"
+      using new 
+      apply(rule_tac a_starI)
+      apply(rule a_redu.intros)
+      apply(rule better_LAxR_intro)
+      apply(rule fic.intros)
+      apply(simp_all add: abs_fresh)
+      done
+    also have "\<dots> = OrR1 <c>.M{b:=(x).Ax x a} a" using fs new
+      by (auto simp add: fresh_prod fresh_atm crename_fresh subst_fresh)
+    also have "\<dots> \<longrightarrow>\<^isub>a* OrR1 <c>.(M[b\<turnstile>c>a]) a" using ih by (auto intro: a_star_congs)
+    also have "\<dots> = (OrR1 <c>.M d)[b\<turnstile>c>a]" using eq fs by simp
+    finally show "(OrR1 <c>.M d){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (OrR1 <c>.M d)[b\<turnstile>c>a]" by simp
+  next
+    case False
+    assume neq: "d\<noteq>b"
+    have "(OrR1 <c>.M d){b:=(x).Ax x a} = OrR1 <c>.(M{b:=(x).Ax x a}) d" using fs neq by (simp)
+    also have "\<dots> \<longrightarrow>\<^isub>a* OrR1 <c>.(M[b\<turnstile>c>a]) d" using ih by (auto intro: a_star_congs)
+    finally show "(OrR1 <c>.M d){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (OrR1 <c>.M d)[b\<turnstile>c>a]" using fs neq by simp
+  qed
+next
+  case (OrR2 c M d  b a x)
+  have fs: "c\<sharp>b" "c\<sharp>a" "c\<sharp>x" "c\<sharp>d" by fact
+  have ih: "M{b:=(x).Ax x a} \<longrightarrow>\<^isub>a* M[b\<turnstile>c>a]" by fact
+  show "(OrR2 <c>.M d){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (OrR2 <c>.M d)[b\<turnstile>c>a]"
+  proof(cases "d=b")
+    case True
+    assume eq: "d=b"
+    obtain a'::"coname" where new: "a'\<sharp>(Ax x a,M{b:=(x).Ax x a},c,x,a)" 
+      by (rule exists_fresh(2)[OF fs_coname1])
+    have "(OrR2 <c>.M d){b:=(x).Ax x a} = 
+             fresh_fun (\<lambda>a'. Cut <a'>.OrR2 <c>.M{b:=(x).Ax x a} a' (x).Ax x a)" using fs eq by (simp)
+    also have "\<dots> = Cut <a'>.OrR2 <c>.M{b:=(x).Ax x a} a' (x).Ax x a"
+      using new by (simp add: fresh_fun_simp_OrR2)
+    also have "\<dots> \<longrightarrow>\<^isub>a* (OrR2 <c>.M{b:=(x).Ax x a} a')[a'\<turnstile>c>a]"
+      using new 
+      apply(rule_tac a_starI)
+      apply(rule a_redu.intros)
+      apply(rule better_LAxR_intro)
+      apply(rule fic.intros)
+      apply(simp_all add: abs_fresh)
+      done
+    also have "\<dots> = OrR2 <c>.M{b:=(x).Ax x a} a" using fs new
+      by (auto simp add: fresh_prod fresh_atm crename_fresh subst_fresh)
+    also have "\<dots> \<longrightarrow>\<^isub>a* OrR2 <c>.(M[b\<turnstile>c>a]) a" using ih by (auto intro: a_star_congs)
+    also have "\<dots> = (OrR2 <c>.M d)[b\<turnstile>c>a]" using eq fs by simp
+    finally show "(OrR2 <c>.M d){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (OrR2 <c>.M d)[b\<turnstile>c>a]" by simp
+  next
+    case False
+    assume neq: "d\<noteq>b"
+    have "(OrR2 <c>.M d){b:=(x).Ax x a} = OrR2 <c>.(M{b:=(x).Ax x a}) d" using fs neq by (simp)
+    also have "\<dots> \<longrightarrow>\<^isub>a* OrR2 <c>.(M[b\<turnstile>c>a]) d" using ih by (auto intro: a_star_congs)
+    finally show "(OrR2 <c>.M d){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (OrR2 <c>.M d)[b\<turnstile>c>a]" using fs neq by simp
+  qed
+next
+  case (OrL u M v N z b a x)
+  have fs: "u\<sharp>b" "u\<sharp>a" "u\<sharp>x" "v\<sharp>b" "v\<sharp>a" "v\<sharp>x" "v\<noteq>u" "u\<sharp>N" "u\<sharp>z" "v\<sharp>M" "v\<sharp>z" by fact
+  have ih1: "M{b:=(x).Ax x a} \<longrightarrow>\<^isub>a* M[b\<turnstile>c>a]" by fact
+  have ih2: "N{b:=(x).Ax x a} \<longrightarrow>\<^isub>a* N[b\<turnstile>c>a]" by fact
+  have "(OrL (u).M (v).N z){b:=(x).Ax x a} = OrL (u).(M{b:=(x).Ax x a}) (v).(N{b:=(x).Ax x a}) z" 
+    using fs by simp
+  also have "\<dots> \<longrightarrow>\<^isub>a* OrL (u).(M[b\<turnstile>c>a]) (v).(N[b\<turnstile>c>a]) z" using ih1 ih2 by (auto intro: a_star_congs)
+  finally show "(OrL (u).M (v).N z){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (OrL (u).M (v).N z)[b\<turnstile>c>a]" using fs by simp
+next
+  case (ImpR z c M d b a x)
+  have fs: "z\<sharp>b" "z\<sharp>a" "z\<sharp>x" "c\<sharp>b" "c\<sharp>a" "c\<sharp>x" "z\<sharp>d" "c\<sharp>d" by fact
+  have ih: "M{b:=(x).Ax x a} \<longrightarrow>\<^isub>a* M[b\<turnstile>c>a]" by fact
+  show "(ImpR (z).<c>.M d){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (ImpR (z).<c>.M d)[b\<turnstile>c>a]"
+  proof(cases "b=d")
+    case True
+    assume eq: "b=d"
+    obtain a'::"coname" where new: "a'\<sharp>(Ax x a,M{b:=(x).Ax x a},x,a,c)" 
+      by (rule exists_fresh(2)[OF fs_coname1])
+    have "(ImpR (z).<c>.M d){b:=(x).Ax x a} =
+                fresh_fun (\<lambda>a'. Cut <a'>.ImpR z.<c>.M{b:=(x).Ax x a} a' (x).Ax x a)" using fs eq by simp
+    also have "\<dots> = Cut <a'>.ImpR z.<c>.M{b:=(x).Ax x a} a' (x).Ax x a" 
+      using new by (simp add: fresh_fun_simp_ImpR)
+    also have "\<dots> \<longrightarrow>\<^isub>a* (ImpR z.<c>.M{b:=(x).Ax x a} a')[a'\<turnstile>c>a]"
+      using new 
+      apply(rule_tac a_starI)
+      apply(rule a_redu.intros)
+      apply(rule better_LAxR_intro)
+      apply(rule fic.intros)
+      apply(simp_all add: abs_fresh)
+      done
+    also have "\<dots> = ImpR z.<c>.M{b:=(x).Ax x a} a" using fs new
+      by (auto simp add: fresh_prod crename_fresh subst_fresh fresh_atm)
+    also have "\<dots> \<longrightarrow>\<^isub>a* ImpR z.<c>.(M[b\<turnstile>c>a]) a" using ih by (auto intro: a_star_congs)
+    also have "\<dots> = (ImpR z.<c>.M b)[b\<turnstile>c>a]" using eq fs by simp
+    finally show "(ImpR (z).<c>.M d){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (ImpR (z).<c>.M d)[b\<turnstile>c>a]" using eq by simp
+  next
+    case False
+    assume neq: "b\<noteq>d"
+    have "(ImpR (z).<c>.M d){b:=(x).Ax x a} = ImpR (z).<c>.(M{b:=(x).Ax x a}) d" using fs neq by simp
+    also have "\<dots> \<longrightarrow>\<^isub>a* ImpR (z).<c>.(M[b\<turnstile>c>a]) d" using ih by (auto intro: a_star_congs)
+    finally show "(ImpR (z).<c>.M d){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (ImpR (z).<c>.M d)[b\<turnstile>c>a]" using neq fs by simp
+  qed
+next
+  case (ImpL c M u N v b a x)
+  have fs: "c\<sharp>b" "c\<sharp>a" "c\<sharp>x" "u\<sharp>b" "u\<sharp>a" "u\<sharp>x" "c\<sharp>N" "c\<sharp>v" "u\<sharp>M" "u\<sharp>v" by fact
+  have ih1: "M{b:=(x).Ax x a} \<longrightarrow>\<^isub>a* M[b\<turnstile>c>a]" by fact
+  have ih2: "N{b:=(x).Ax x a} \<longrightarrow>\<^isub>a* N[b\<turnstile>c>a]" by fact
+  have "(ImpL <c>.M (u).N v){b:=(x).Ax x a} = ImpL <c>.(M{b:=(x).Ax x a}) (u).(N{b:=(x).Ax x a}) v" 
+    using fs by simp
+  also have "\<dots> \<longrightarrow>\<^isub>a* ImpL <c>.(M[b\<turnstile>c>a]) (u).(N[b\<turnstile>c>a]) v" 
+    using ih1 ih2 by (auto intro: a_star_congs)
+  finally show "(ImpL <c>.M (u).N v){b:=(x).Ax x a} \<longrightarrow>\<^isub>a* (ImpL <c>.M (u).N v)[b\<turnstile>c>a]" 
+    using fs by simp
+qed
+
+text {* substitution lemmas *}
+
+lemma not_Ax1:
+  shows "\<not>(b\<sharp>M) \<Longrightarrow> M{b:=(y).Q} \<noteq> Ax x a"
+apply(nominal_induct M avoiding: b y Q x a rule: trm.induct)
+apply(auto simp add: fresh_atm abs_fresh abs_supp fin_supp)
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname:=(y).Q},Q)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotR abs_fresh fresh_atm)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname:=(y).Q},Q)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotR abs_fresh fresh_atm)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm1{coname3:=(y).Q},Q,trm2{coname3:=(y).Q},coname1,coname2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndR abs_fresh fresh_atm)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm1{coname3:=(y).Q},Q,trm2{coname3:=(y).Q},coname1,coname2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndR abs_fresh fresh_atm)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm1{coname3:=(y).Q},Q,trm2{coname3:=(y).Q},coname1,coname2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndR abs_fresh fresh_atm)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(y).Q},Q,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR1 abs_fresh fresh_atm)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(y).Q},Q,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR1 abs_fresh fresh_atm)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(y).Q},Q,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR2 abs_fresh fresh_atm)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(y).Q},Q,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrR2 abs_fresh fresh_atm)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(y).Q},Q,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpR abs_fresh abs_supp fin_supp fresh_atm)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+apply(subgoal_tac "\<exists>x'::coname. x'\<sharp>(trm{coname2:=(y).Q},Q,coname1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpR abs_fresh abs_supp fin_supp fresh_atm)
+apply(rule exists_fresh'(2)[OF fs_coname1])
+done
+
+lemma not_Ax2:
+  shows "\<not>(x\<sharp>M) \<Longrightarrow> M{x:=<b>.Q} \<noteq> Ax y a"
+apply(nominal_induct M avoiding: b y Q x a rule: trm.induct)
+apply(auto simp add: fresh_atm abs_fresh abs_supp fin_supp)
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{x:=<b>.Q},Q)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotL abs_fresh fresh_atm)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{x:=<b>.Q},Q)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_NotL abs_fresh fresh_atm)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{x:=<b>.Q},Q,name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL1 abs_fresh fresh_atm)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{x:=<b>.Q},Q,name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL1 abs_fresh fresh_atm)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{x:=<b>.Q},Q,name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL2 abs_fresh fresh_atm)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm{x:=<b>.Q},Q,name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_AndL2 abs_fresh fresh_atm)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{x:=<b>.Q},Q,trm2{x:=<b>.Q},name1,name2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrL abs_fresh fresh_atm)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{x:=<b>.Q},Q,trm2{x:=<b>.Q},name1,name2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrL abs_fresh fresh_atm)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{x:=<b>.Q},Q,trm2{x:=<b>.Q},name1,name2)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_OrL abs_fresh fresh_atm)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{name2:=<b>.Q},Q,trm2{name2:=<b>.Q},name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpL abs_fresh fresh_atm)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{name2:=<b>.Q},Q,trm2{name2:=<b>.Q},name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpL abs_fresh fresh_atm)
+apply(rule exists_fresh'(1)[OF fs_name1])
+apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(trm1{name2:=<b>.Q},Q,trm2{name2:=<b>.Q},name1)")
+apply(erule exE)
+apply(simp add: fresh_prod)
+apply(erule conjE)+
+apply(simp add: fresh_fun_simp_ImpL abs_fresh fresh_atm)
+apply(rule exists_fresh'(1)[OF fs_name1])
+done
+
+lemma interesting_subst1:
+  assumes a: "x\<noteq>y" "x\<sharp>P" "y\<sharp>P" 
+  shows "N{y:=<c>.P}{x:=<c>.P} = N{x:=<c>.Ax y c}{y:=<c>.P}"
+using a
+proof(nominal_induct N avoiding: x y c P rule: trm.induct)
+  case Ax
+  then show ?case
+    by (auto simp add: abs_fresh fresh_atm forget trm.inject)
+next 
+  case (Cut d M u M' x' y' c P)
+  from prems show ?case
+    apply(simp)
+    apply(auto)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp)
+    apply(auto)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp)
+    apply(simp add: trm.inject alpha forget)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp)
+    apply(auto)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp)
+    apply(rule impI)
+    apply(simp add: trm.inject alpha forget)
+    apply(simp add: trm.inject alpha forget)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp)
+    apply(auto)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp)
+    apply(simp add: trm.inject alpha forget)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp)
+    apply(auto)
+    apply(case_tac "y'\<sharp>M")
+    apply(simp add: forget)
+    apply(simp add: not_Ax2)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp)
+    apply(auto)
+    apply(case_tac "x'\<sharp>M")
+    apply(simp add: forget)
+    apply(simp add: not_Ax2)
+    done
+next
+  case NotR
+  then show ?case
+    by (auto simp add: abs_fresh fresh_atm forget)
+next
+  case (NotL d M u)
+  then show ?case
+    apply (auto simp add: abs_fresh fresh_atm forget)
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(P,M{y:=<c>.P},M{x:=<c>.Ax y c}{y:=<c>.P},y,x)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_NotL)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp)
+    apply(auto simp add: fresh_atm)
+    apply(simp add: trm.inject alpha forget)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(P,M{x:=<c>.Ax y c},M{x:=<c>.Ax y c}{y:=<c>.P},Ax y c,y,x)")
+    apply(erule exE, simp only: fresh_prod)
+    apply(erule conjE)+
+    apply(simp only: fresh_fun_simp_NotL)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp)
+    apply(simp add: trm.inject alpha forget subst_fresh)
+    apply(rule trans)
+    apply(rule substn.simps)
+    apply(simp add: abs_fresh fresh_prod fresh_atm)
+    apply(simp add: fresh_atm)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case (AndR d1 M d2 M' d3)
+  then show ?case
+    by (auto simp add: abs_fresh fresh_atm forget trm.inject subst_fresh)
+next
+  case (AndL1 u M d)
+  then show ?case
+    apply(auto simp add: abs_fresh fresh_atm forget trm.inject subst_fresh)
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(P,M{y:=<c>.P},M{x:=<c>.Ax y c}{y:=<c>.P},u,y,x)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_AndL1)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp)
+    apply(auto simp add: fresh_atm)
+    apply(simp add: trm.inject alpha forget)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(P,Ax y c,M{x:=<c>.Ax y c},M{x:=<c>.Ax y c}{y:=<c>.P},u,y,x)")
+    apply(erule exE, simp only: fresh_prod)
+    apply(erule conjE)+
+    apply(simp only: fresh_fun_simp_AndL1)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp)
+    apply(auto simp add: fresh_atm)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case (AndL2 u M d)
+  then show ?case
+    apply(auto simp add: abs_fresh fresh_atm forget trm.inject subst_fresh)
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(P,M{y:=<c>.P},M{x:=<c>.Ax y c}{y:=<c>.P},u,y,x)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_AndL2)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp)
+    apply(auto simp add: fresh_atm)
+    apply(simp add: trm.inject alpha forget)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(P,Ax y c,M{x:=<c>.Ax y c},M{x:=<c>.Ax y c}{y:=<c>.P},u,y,x)")
+    apply(erule exE, simp only: fresh_prod)
+    apply(erule conjE)+
+    apply(simp only: fresh_fun_simp_AndL2)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp)
+    apply(auto simp add: fresh_atm)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case OrR1
+  then show ?case
+    by (auto simp add: abs_fresh fresh_atm forget trm.inject subst_fresh)
+next
+  case OrR2
+  then show ?case
+    by (auto simp add: abs_fresh fresh_atm forget trm.inject subst_fresh)
+next
+  case (OrL x1 M x2 M' x3)
+  then show ?case
+    apply(auto simp add: abs_fresh fresh_atm forget trm.inject subst_fresh)
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(P,M{y:=<c>.P},M{x:=<c>.Ax y c}{y:=<c>.P},
+                                        M'{y:=<c>.P},M'{x:=<c>.Ax y c}{y:=<c>.P},x1,x2,x3,y,x)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_OrL)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp)
+    apply(auto simp add: fresh_atm)
+    apply(simp add: trm.inject alpha forget)
+    apply(rule trans)
+    apply(rule substn.simps)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(force)
+    apply(simp)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(P,Ax y c,M{x:=<c>.Ax y c},M{x:=<c>.Ax y c}{y:=<c>.P},
+                                        M'{x:=<c>.Ax y c},M'{x:=<c>.Ax y c}{y:=<c>.P},x1,x2,x3,y,x)")
+    apply(erule exE, simp only: fresh_prod)
+    apply(erule conjE)+
+    apply(simp only: fresh_fun_simp_OrL)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp)
+    apply(simp add: trm.inject alpha)
+    apply(rule trans)
+    apply(rule substn.simps)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(force)
+    apply(simp)
+    apply(auto simp add: fresh_atm)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case ImpR
+  then show ?case
+    by (auto simp add: abs_fresh fresh_atm forget trm.inject subst_fresh)
+next
+  case (ImpL a M x1 M' x2)
+  then show ?case
+    apply(auto simp add: abs_fresh fresh_atm forget trm.inject subst_fresh)
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(P,M{x2:=<c>.P},M{x:=<c>.Ax x2 c}{x2:=<c>.P},
+                                        M'{x2:=<c>.P},M'{x:=<c>.Ax x2 c}{x2:=<c>.P},x1,y,x)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_ImpL)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp)
+    apply(auto simp add: fresh_atm)
+    apply(simp add: trm.inject alpha forget)
+    apply(rule trans)
+    apply(rule substn.simps)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(force)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(P,Ax y c,M{x2:=<c>.Ax y c},M{x2:=<c>.Ax y c}{y:=<c>.P},
+                                        M'{x2:=<c>.Ax y c},M'{x2:=<c>.Ax y c}{y:=<c>.P},x1,x2,x3,y,x)")
+    apply(erule exE, simp only: fresh_prod)
+    apply(erule conjE)+
+    apply(simp only: fresh_fun_simp_ImpL)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp)
+    apply(simp add: trm.inject alpha)
+    apply(rule trans)
+    apply(rule substn.simps)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(simp)
+    apply(auto simp add: fresh_atm)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+qed 
+
+lemma interesting_subst1':
+  assumes a: "x\<noteq>y" "x\<sharp>P" "y\<sharp>P" 
+  shows "N{y:=<c>.P}{x:=<c>.P} = N{x:=<a>.Ax y a}{y:=<c>.P}"
+proof -
+  show ?thesis
+  proof (cases "c=a")
+    case True then show ?thesis using a by (simp add: interesting_subst1)
+  next
+    case False then show ?thesis using a
+      apply - 
+      apply(subgoal_tac "N{x:=<a>.Ax y a} = N{x:=<c>.([(c,a)]\<bullet>Ax y a)}") 
+      apply(simp add: interesting_subst1 calc_atm)
+      apply(rule subst_rename)
+      apply(simp add: fresh_prod fresh_atm)
+      done
+  qed
+qed
+
+lemma interesting_subst2:
+  assumes a: "a\<noteq>b" "a\<sharp>P" "b\<sharp>P" 
+  shows "N{a:=(y).P}{b:=(y).P} = N{b:=(y).Ax y a}{a:=(y).P}"
+using a
+proof(nominal_induct N avoiding: a b y P rule: trm.induct)
+  case Ax
+  then show ?case
+    by (auto simp add: abs_fresh fresh_atm forget trm.inject)
+next 
+  case (Cut d M u M' x' y' c P)
+  from prems show ?case
+    apply(simp)
+    apply(auto simp add: trm.inject)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp)
+    apply(simp add: abs_fresh)
+    apply(simp add: forget)
+    apply(auto)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh)
+    apply(simp add: abs_fresh) 
+    apply(simp)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh)
+    apply(simp add: abs_fresh)
+    apply(auto)[1]
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(rule impI)
+    apply(simp add: fresh_atm trm.inject alpha forget)
+    apply(case_tac "x'\<sharp>M'")
+    apply(simp add: forget)
+    apply(simp add: not_Ax1)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh)
+    apply(simp add: abs_fresh)
+    apply(auto)
+    apply(case_tac "y'\<sharp>M'")
+    apply(simp add: forget)
+    apply(simp add: not_Ax1)
+    done
+next
+  case NotL
+  then show ?case
+    by (auto simp add: abs_fresh fresh_atm forget)
+next
+  case (NotR u M d)
+  then show ?case
+    apply (auto simp add: abs_fresh fresh_atm forget)
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(b,P,M{d:=(y).P},M{b:=(y).Ax y d}{d:=(y).P},u,y)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_NotR)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(auto simp add: fresh_atm)
+    apply(simp add: trm.inject alpha forget)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(P,M{d:=(y).Ax y a},M{d:=(y).Ax y a}{a:=(y).P},Ax y a,y,d)")
+    apply(erule exE, simp only: fresh_prod)
+    apply(erule conjE)+
+    apply(simp only: fresh_fun_simp_NotR)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp add: trm.inject alpha forget subst_fresh)
+    apply(rule trans)
+    apply(rule substc.simps)
+    apply(simp add: abs_fresh fresh_prod fresh_atm)
+    apply(simp add: fresh_atm)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    done
+next
+  case (AndR d1 M d2 M' d3)
+  then show ?case
+    apply(auto simp add: abs_fresh fresh_atm forget trm.inject subst_fresh)
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(P,M{d3:=(y).P},M{b:=(y).Ax y d3}{d3:=(y).P},
+                                        M'{d3:=(y).P},M'{b:=(y).Ax y d3}{d3:=(y).P},d1,d2,d3,b,y)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_AndR)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh fresh_atm)
+    apply(simp add: abs_fresh fresh_atm)
+    apply(simp)
+    apply(auto simp add: fresh_atm)
+    apply(simp add: trm.inject alpha forget)
+    apply(rule trans)
+    apply(rule substc.simps)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(force)
+    apply(simp)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(P,Ax y a,M{d3:=(y).Ax y a},M{d3:=(y).Ax y a}{a:=(y).P},
+                                        M'{d3:=(y).Ax y a},M'{d3:=(y).Ax y a}{a:=(y).P},d1,d2,d3,y,b)")
+    apply(erule exE, simp only: fresh_prod)
+    apply(erule conjE)+
+    apply(simp only: fresh_fun_simp_AndR)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp add: trm.inject alpha)
+    apply(rule trans)
+    apply(rule substc.simps)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(force)
+    apply(simp)
+    apply(auto simp add: fresh_atm)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    done
+next
+  case (AndL1 u M d)
+  then show ?case
+    by (auto simp add: abs_fresh fresh_atm forget trm.inject subst_fresh)
+next
+  case (AndL2 u M d)
+  then show ?case
+    by (auto simp add: abs_fresh fresh_atm forget trm.inject subst_fresh)
+next
+  case (OrR1 d M e)
+  then show ?case
+    apply (auto simp add: abs_fresh fresh_atm forget)
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(b,P,M{e:=(y).P},M{b:=(y).Ax y e}{e:=(y).P},d,e)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_OrR1)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(auto simp add: fresh_atm)
+    apply(simp add: trm.inject alpha forget)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(b,P,Ax y a,M{e:=(y).Ax y a},M{e:=(y).Ax y a}{a:=(y).P},d,e)")
+    apply(erule exE, simp only: fresh_prod)
+    apply(erule conjE)+
+    apply(simp only: fresh_fun_simp_OrR1)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp add: trm.inject alpha forget subst_fresh)
+    apply(rule trans)
+    apply(rule substc.simps)
+    apply(simp add: abs_fresh fresh_prod fresh_atm)
+    apply(simp add: fresh_atm)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    done
+next
+  case (OrR2 d M e)
+  then show ?case
+    apply (auto simp add: abs_fresh fresh_atm forget)
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(b,P,M{e:=(y).P},M{b:=(y).Ax y e}{e:=(y).P},d,e)")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_OrR2)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(auto simp add: fresh_atm)
+    apply(simp add: trm.inject alpha forget)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(b,P,Ax y a,M{e:=(y).Ax y a},M{e:=(y).Ax y a}{a:=(y).P},d,e)")
+    apply(erule exE, simp only: fresh_prod)
+    apply(erule conjE)+
+    apply(simp only: fresh_fun_simp_OrR2)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp add: trm.inject alpha forget subst_fresh)
+    apply(rule trans)
+    apply(rule substc.simps)
+    apply(simp add: abs_fresh fresh_prod fresh_atm)
+    apply(simp add: fresh_atm)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    done
+next
+  case (OrL x1 M x2 M' x3)
+  then show ?case
+    by(auto simp add: abs_fresh fresh_atm forget trm.inject subst_fresh)
+next
+  case ImpL
+  then show ?case
+    by (auto simp add: abs_fresh fresh_atm forget trm.inject subst_fresh)
+next
+  case (ImpR u e M d)
+  then show ?case
+    apply(auto simp add: abs_fresh fresh_atm forget trm.inject subst_fresh)
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(b,e,d,P,M{d:=(y).P},M{b:=(y).Ax y d}{d:=(y).P})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_ImpR)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(auto simp add: fresh_atm)
+    apply(simp add: trm.inject alpha forget)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(e,d,P,Ax y a,M{d:=(y).Ax y a},M{d:=(y).Ax y a}{a:=(y).P})")
+    apply(erule exE, simp only: fresh_prod)
+    apply(erule conjE)+
+    apply(simp only: fresh_fun_simp_ImpR)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp add: trm.inject alpha)
+    apply(rule trans)
+    apply(rule substc.simps)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(simp)
+    apply(auto simp add: fresh_atm)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    done
+qed 
+
+lemma interesting_subst2':
+  assumes a: "a\<noteq>b" "a\<sharp>P" "b\<sharp>P" 
+  shows "N{a:=(y).P}{b:=(y).P} = N{b:=(z).Ax z a}{a:=(y).P}"
+proof -
+  show ?thesis
+  proof (cases "z=y")
+    case True then show ?thesis using a by (simp add: interesting_subst2)
+  next
+    case False then show ?thesis using a
+      apply - 
+      apply(subgoal_tac "N{b:=(z).Ax z a} = N{b:=(y).([(y,z)]\<bullet>Ax z a)}") 
+      apply(simp add: interesting_subst2 calc_atm)
+      apply(rule subst_rename)
+      apply(simp add: fresh_prod fresh_atm)
+      done
+  qed
+qed
+
+lemma subst_subst1:
+  assumes a: "a\<sharp>(Q,b)" "x\<sharp>(y,P,Q)" "b\<sharp>Q" "y\<sharp>P" 
+  shows "M{x:=<a>.P}{b:=(y).Q} = M{b:=(y).Q}{x:=<a>.(P{b:=(y).Q})}"
+using a
+proof(nominal_induct M avoiding: x a P b y Q rule: trm.induct)
+  case (Ax z c)
+  have fs: "a\<sharp>(Q,b)" "x\<sharp>(y,P,Q)" "b\<sharp>Q" "y\<sharp>P" by fact
+  { assume asm: "z=x \<and> c=b"
+    have "(Ax x b){x:=<a>.P}{b:=(y).Q} = (Cut <a>.P (x).Ax x b){b:=(y).Q}" using fs by simp
+    also have "\<dots> = Cut <a>.(P{b:=(y).Q}) (y).Q"
+      using fs by (simp_all add: fresh_prod fresh_atm)
+    also have "\<dots> = Cut <a>.(P{b:=(y).Q}) (y).(Q{x:=<a>.(P{b:=(y).Q})})" using fs by (simp add: forget)
+    also have "\<dots> = (Cut <b>.Ax x b (y).Q){x:=<a>.(P{b:=(y).Q})}"
+      using fs asm by (auto simp add: fresh_prod fresh_atm subst_fresh)
+    also have "\<dots> = (Ax x b){b:=(y).Q}{x:=<a>.(P{b:=(y).Q})}" using fs by simp
+    finally have "(Ax z c){x:=<a>.P}{b:=(y).Q} = (Ax z c){b:=(y).Q}{x:=<a>.(P{b:=(y).Q})}" 
+      using asm by simp
+  }
+  moreover
+  { assume asm: "z\<noteq>x \<and> c=b"
+    have "(Ax z c){x:=<a>.P}{b:=(y).Q} = (Ax z c){b:=(y).Q}" using asm by simp
+    also have "\<dots> = Cut <b>.Ax z c (y).Q" using fs asm by simp
+    also have "\<dots> = Cut <b>.(Ax z c{x:=<a>.(P{b:=(y).Q})}) (y).(Q{x:=<a>.(P{b:=(y).Q})})" 
+      using fs asm by (simp add: forget)
+    also have "\<dots> = (Cut <b>.Ax z c (y).Q){x:=<a>.(P{b:=(y).Q})}" using asm fs
+      by (auto simp add: trm.inject subst_fresh fresh_prod fresh_atm abs_fresh)
+    also have "\<dots> = (Ax z c){b:=(y).Q}{x:=<a>.(P{b:=(y).Q})}" using asm fs by simp
+    finally have "(Ax z c){x:=<a>.P}{b:=(y).Q} = (Ax z c){b:=(y).Q}{x:=<a>.(P{b:=(y).Q})}" by simp
+  }
+  moreover
+  { assume asm: "z=x \<and> c\<noteq>b"
+    have "(Ax z c){x:=<a>.P}{b:=(y).Q} = (Cut <a>.P (x).Ax z c){b:=(y).Q}" using fs asm by simp
+    also have "\<dots> = Cut <a>.(P{b:=(y).Q}) (x).Ax z c" using fs asm by (auto simp add: trm.inject abs_fresh)
+    also have "\<dots> = (Ax z c){x:=<a>.(P{b:=(y).Q})}" using fs asm by simp
+    also have "\<dots> = (Ax z c){b:=(y).Q}{x:=<a>.(P{b:=(y).Q})}" using asm by auto
+    finally have "(Ax z c){x:=<a>.P}{b:=(y).Q} = (Ax z c){b:=(y).Q}{x:=<a>.(P{b:=(y).Q})}" by simp
+  }
+  moreover
+  { assume asm: "z\<noteq>x \<and> c\<noteq>b"
+    have "(Ax z c){x:=<a>.P}{b:=(y).Q} = (Ax z c){b:=(y).Q}{x:=<a>.(P{b:=(y).Q})}" using asm by auto
+  }
+  ultimately show ?case by blast
+next
+  case (Cut c M z N)
+  { assume asm: "M = Ax x c \<and> N = Ax z b"
+    have "(Cut <c>.M (z).N){x:=<a>.P}{b:=(y).Q} = (Cut <a>.P (z).(N{x:=<a>.P})){b:=(y).Q}" 
+      using asm prems by simp
+    also have "\<dots> = (Cut <a>.P (z).N){b:=(y).Q}" using asm prems by (simp add: fresh_atm)
+    also have "\<dots> = (Cut <a>.(P{b:=(y).Q}) (y).Q)" using asm prems by (auto simp add: fresh_prod fresh_atm)
+    finally have eq1: "(Cut <c>.M (z).N){x:=<a>.P}{b:=(y).Q} = (Cut <a>.(P{b:=(y).Q}) (y).Q)" by simp
+    have "(Cut <c>.M (z).N){b:=(y).Q}{x:=<a>.(P{b:=(y).Q})} = (Cut <c>.M (y).Q){x:=<a>.(P{b:=(y).Q})}"
+      using prems asm by (simp add: fresh_atm)
+    also have "\<dots> = Cut <a>.(P{b:=(y).Q}) (y).(Q{x:=<a>.(P{b:=(y).Q})})" using asm prems
+      by (auto simp add: fresh_prod fresh_atm subst_fresh)
+    also have "\<dots> = Cut <a>.(P{b:=(y).Q}) (y).Q" using asm prems by (simp add: forget)
+    finally have eq2: "(Cut <c>.M (z).N){b:=(y).Q}{x:=<a>.(P{b:=(y).Q})} = Cut <a>.(P{b:=(y).Q}) (y).Q"
+      by simp
+    have "(Cut <c>.M (z).N){x:=<a>.P}{b:=(y).Q} = (Cut <c>.M (z).N){b:=(y).Q}{x:=<a>.(P{b:=(y).Q})}" 
+      using eq1 eq2 by simp
+  }
+  moreover
+  { assume asm: "M \<noteq> Ax x c \<and> N = Ax z b"
+    have neq: "M{b:=(y).Q} \<noteq> Ax x c"
+    proof (cases "b\<sharp>M")
+      case True then show ?thesis using asm by (simp add: forget)
+    next
+      case False then show ?thesis by (simp add: not_Ax1)
+    qed
+    have "(Cut <c>.M (z).N){x:=<a>.P}{b:=(y).Q} = (Cut <c>.(M{x:=<a>.P}) (z).(N{x:=<a>.P})){b:=(y).Q}"
+      using asm prems by simp
+    also have "\<dots> = (Cut <c>.(M{x:=<a>.P}) (z).N){b:=(y).Q}" using asm prems by (simp add: fresh_atm)
+    also have "\<dots> = Cut <c>.(M{x:=<a>.P}{b:=(y).Q}) (y).Q" using asm prems by (simp add: abs_fresh)
+    also have "\<dots> = Cut <c>.(M{b:=(y).Q}{x:=<a>.P{b:=(y).Q}}) (y).Q" using asm prems by simp
+    finally 
+    have eq1: "(Cut <c>.M (z).N){x:=<a>.P}{b:=(y).Q} = Cut <c>.(M{b:=(y).Q}{x:=<a>.P{b:=(y).Q}}) (y).Q" 
+      by simp
+    have "(Cut <c>.M (z).N){b:=(y).Q}{x:=<a>.(P{b:=(y).Q})} = 
+               (Cut <c>.(M{b:=(y).Q}) (y).Q){x:=<a>.(P{b:=(y).Q})}" using asm prems by simp
+    also have "\<dots> = Cut <c>.(M{b:=(y).Q}{x:=<a>.(P{b:=(y).Q})}) (y).(Q{x:=<a>.(P{b:=(y).Q})})"
+      using asm prems neq by (auto simp add: fresh_prod fresh_atm subst_fresh abs_fresh)
+    also have "\<dots> = Cut <c>.(M{b:=(y).Q}{x:=<a>.(P{b:=(y).Q})}) (y).Q" using asm prems by (simp add: forget)
+    finally have eq2: "(Cut <c>.M (z).N){b:=(y).Q}{x:=<a>.(P{b:=(y).Q})} 
+                                       = Cut <c>.(M{b:=(y).Q}{x:=<a>.(P{b:=(y).Q})}) (y).Q" by simp
+    have "(Cut <c>.M (z).N){x:=<a>.P}{b:=(y).Q} = (Cut <c>.M (z).N){b:=(y).Q}{x:=<a>.(P{b:=(y).Q})}" 
+      using eq1 eq2 by simp
+  }
+  moreover 
+  { assume asm: "M = Ax x c \<and> N \<noteq> Ax z b"
+    have neq: "N{x:=<a>.P} \<noteq> Ax z b"
+    proof (cases "x\<sharp>N")
+      case True then show ?thesis using asm by (simp add: forget)
+    next
+      case False then show ?thesis by (simp add: not_Ax2)
+    qed
+    have "(Cut <c>.M (z).N){x:=<a>.P}{b:=(y).Q} = (Cut <a>.P (z).(N{x:=<a>.P})){b:=(y).Q}"
+      using asm prems by simp
+    also have "\<dots> = Cut <a>.(P{b:=(y).Q}) (z).(N{x:=<a>.P}{b:=(y).Q})" using asm prems neq 
+      by (simp add: abs_fresh)
+    also have "\<dots> = Cut <a>.(P{b:=(y).Q}) (z).(N{b:=(y).Q}{x:=<a>.(P{b:=(y).Q})})" using asm prems by simp
+    finally have eq1: "(Cut <c>.M (z).N){x:=<a>.P}{b:=(y).Q} 
+                    = Cut <a>.(P{b:=(y).Q}) (z).(N{b:=(y).Q}{x:=<a>.(P{b:=(y).Q})})" by simp
+    have "(Cut <c>.M (z).N){b:=(y).Q}{x:=<a>.(P{b:=(y).Q})} 
+                    = (Cut <c>.(M{b:=(y).Q}) (z).(N{b:=(y).Q})){x:=<a>.(P{b:=(y).Q})}"
+      using asm prems by auto
+    also have "\<dots> = (Cut <c>.M (z).(N{b:=(y).Q})){x:=<a>.(P{b:=(y).Q})}"
+      using asm prems by (auto simp add: fresh_atm)
+    also have "\<dots> = Cut <a>.(P{b:=(y).Q}) (z).(N{b:=(y).Q}{x:=<a>.(P{b:=(y).Q})})" 
+      using asm prems by (simp add: fresh_prod fresh_atm subst_fresh)
+    finally 
+    have eq2: "(Cut <c>.M (z).N){b:=(y).Q}{x:=<a>.(P{b:=(y).Q})} 
+         = Cut <a>.(P{b:=(y).Q}) (z).(N{b:=(y).Q}{x:=<a>.(P{b:=(y).Q})})" by simp
+    have "(Cut <c>.M (z).N){x:=<a>.P}{b:=(y).Q} = (Cut <c>.M (z).N){b:=(y).Q}{x:=<a>.(P{b:=(y).Q})}"
+      using eq1 eq2 by simp
+  }
+  moreover
+  { assume asm: "M \<noteq> Ax x c \<and> N \<noteq> Ax z b"
+    have neq1: "N{x:=<a>.P} \<noteq> Ax z b"
+    proof (cases "x\<sharp>N")
+      case True then show ?thesis using asm by (simp add: forget)
+    next
+      case False then show ?thesis by (simp add: not_Ax2)
+    qed
+    have neq2: "M{b:=(y).Q} \<noteq> Ax x c"
+    proof (cases "b\<sharp>M")
+      case True then show ?thesis using asm by (simp add: forget)
+    next
+      case False then show ?thesis by (simp add: not_Ax1)
+    qed
+    have "(Cut <c>.M (z).N){x:=<a>.P}{b:=(y).Q} = (Cut <c>.(M{x:=<a>.P}) (z).(N{x:=<a>.P})){b:=(y).Q}"
+      using asm prems by simp
+    also have "\<dots> = Cut <c>.(M{x:=<a>.P}{b:=(y).Q}) (z).(N{x:=<a>.P}{b:=(y).Q})" using asm prems neq1
+      by (simp add: abs_fresh)
+    also have "\<dots> = Cut <c>.(M{b:=(y).Q}{x:=<a>.(P{b:=(y).Q})}) (z).(N{b:=(y).Q}{x:=<a>.(P{b:=(y).Q})})"
+      using asm prems by simp
+    finally have eq1: "(Cut <c>.M (z).N){x:=<a>.P}{b:=(y).Q}
+             = Cut <c>.(M{b:=(y).Q}{x:=<a>.(P{b:=(y).Q})}) (z).(N{b:=(y).Q}{x:=<a>.(P{b:=(y).Q})})" by simp
+    have "(Cut <c>.M (z).N){b:=(y).Q}{x:=<a>.(P{b:=(y).Q})} = 
+                (Cut <c>.(M{b:=(y).Q}) (z).(N{b:=(y).Q})){x:=<a>.(P{b:=(y).Q})}" using asm neq1 prems by simp
+    also have "\<dots> = Cut <c>.(M{b:=(y).Q}{x:=<a>.(P{b:=(y).Q})}) (z).(N{b:=(y).Q}{x:=<a>.(P{b:=(y).Q})})"
+      using asm neq2 prems by (simp add: fresh_prod fresh_atm subst_fresh)
+    finally have eq2: "(Cut <c>.M (z).N){b:=(y).Q}{x:=<a>.(P{b:=(y).Q})} = 
+           Cut <c>.(M{b:=(y).Q}{x:=<a>.(P{b:=(y).Q})}) (z).(N{b:=(y).Q}{x:=<a>.(P{b:=(y).Q})})" by simp
+    have "(Cut <c>.M (z).N){x:=<a>.P}{b:=(y).Q} = (Cut <c>.M (z).N){b:=(y).Q}{x:=<a>.(P{b:=(y).Q})}"
+      using eq1 eq2 by simp
+  }
+  ultimately show ?case by blast
+next
+  case (NotR z M c)
+  then show ?case
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(M{c:=(y).Q},M{c:=(y).Q}{x:=<a>.P{c:=(y).Q}},Q,a,P,c,y)")
+    apply(erule exE)
+    apply(simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_NotR abs_fresh fresh_atm)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: fresh_prod fresh_atm subst_fresh abs_fresh)
+    apply(simp add: fresh_prod fresh_atm subst_fresh abs_fresh)
+    apply(simp add: forget)
+    apply(simp add: fresh_prod fresh_atm subst_fresh)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    done
+next
+  case (NotL c M z)
+  then show ?case  
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(P,M{x:=<a>.P},P{b:=(y).Q},M{b:=(y).Q}{x:=<a>.P{b:=(y).Q}},y,Q)")
+    apply(erule exE)
+    apply(simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_NotL abs_fresh fresh_atm)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case (AndR c1 M c2 N c3)
+  then show ?case  
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(Q,M{c3:=(y).Q},M{c3:=(y).Q}{x:=<a>.P{c3:=(y).Q}},c2,c3,a,
+                                     P{c3:=(y).Q},N{c3:=(y).Q},N{c3:=(y).Q}{x:=<a>.P{c3:=(y).Q}},c1)")
+    apply(erule exE)
+    apply(simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_AndR abs_fresh fresh_atm)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp_all add: fresh_atm abs_fresh subst_fresh)
+    apply(simp add: forget)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    done
+next
+  case (AndL1 z1 M z2)
+  then show ?case  
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(P,M{x:=<a>.P},P{b:=(y).Q},z1,y,Q,M{b:=(y).Q}{x:=<a>.P{b:=(y).Q}})")
+    apply(erule exE)
+    apply(simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_AndL1 abs_fresh fresh_atm)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case (AndL2 z1 M z2)
+  then show ?case  
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(P,M{x:=<a>.P},P{b:=(y).Q},z1,y,Q,M{b:=(y).Q}{x:=<a>.P{b:=(y).Q}})")
+    apply(erule exE)
+    apply(simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_AndL2 abs_fresh fresh_atm)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case (OrL z1 M z2 N z3)
+  then show ?case  
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(P,M{x:=<a>.P},M{b:=(y).Q}{x:=<a>.P{b:=(y).Q}},z2,z3,a,y,Q,
+                                     P{b:=(y).Q},N{x:=<a>.P},N{b:=(y).Q}{x:=<a>.P{b:=(y).Q}},z1)")
+    apply(erule exE)
+    apply(simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_OrL abs_fresh fresh_atm)
+    apply(simp add: trm.inject alpha)
+    apply(rule trans)
+    apply(rule substc.simps)
+    apply(simp_all add: fresh_atm subst_fresh)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case (OrR1 c1 M c2)
+  then show ?case  
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(Q,M{c2:=(y).Q},a,P{c2:=(y).Q},c1,
+                                                     M{c2:=(y).Q}{x:=<a>.P{c2:=(y).Q}})")
+    apply(erule exE)
+    apply(simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_OrR1 abs_fresh fresh_atm)
+    apply(simp_all add: fresh_atm subst_fresh abs_fresh)
+    apply(simp add: forget)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    done
+next
+  case (OrR2 c1 M c2)
+  then show ?case  
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(Q,M{c2:=(y).Q},a,P{c2:=(y).Q},c1,
+                                                     M{c2:=(y).Q}{x:=<a>.P{c2:=(y).Q}})")
+    apply(erule exE)
+    apply(simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_OrR2 abs_fresh fresh_atm)
+    apply(simp_all add: fresh_atm subst_fresh abs_fresh)
+    apply(simp add: forget)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    done
+next
+  case (ImpR z c M d)
+  then show ?case  
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(Q,M{d:=(y).Q},a,P{d:=(y).Q},c,
+                                                     M{d:=(y).Q}{x:=<a>.P{d:=(y).Q}})")
+    apply(erule exE)
+    apply(simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_ImpR abs_fresh fresh_atm)
+    apply(simp_all add: fresh_atm subst_fresh forget abs_fresh)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    done
+next
+  case (ImpL c M z N u)
+  then show ?case  
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)
+    apply(subgoal_tac "\<exists>z'::name. z'\<sharp>(P,P{b:=(y).Q},M{u:=<a>.P},N{u:=<a>.P},y,Q,
+                        M{b:=(y).Q}{u:=<a>.P{b:=(y).Q}},N{b:=(y).Q}{u:=<a>.P{b:=(y).Q}},z)")
+    apply(erule exE)
+    apply(simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_ImpL abs_fresh fresh_atm)
+    apply(simp add: trm.inject alpha)
+    apply(rule trans)
+    apply(rule substc.simps)
+    apply(simp_all add: fresh_atm subst_fresh forget)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+qed
+
+lemma subst_subst2:
+  assumes a: "a\<sharp>(b,P,N)" "x\<sharp>(y,P,M)" "b\<sharp>(M,N)" "y\<sharp>P"
+  shows "M{a:=(x).N}{y:=<b>.P} = M{y:=<b>.P}{a:=(x).N{y:=<b>.P}}"
+using a
+proof(nominal_induct M avoiding: a x N y b P rule: trm.induct)
+  case (Ax z c)
+  then show ?case
+    by (auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget trm.inject)
+next
+  case (Cut d M' u M'')
+  then show ?case
+    apply(simp add: fresh_atm fresh_prod trm.inject abs_fresh)
+    apply(auto)
+    apply(simp add: fresh_atm)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh subst_fresh fresh_prod fresh_atm)
+    apply(simp add: fresh_prod subst_fresh fresh_atm abs_fresh)
+    apply(simp)
+    apply(simp add: forget)
+    apply(simp add: fresh_atm)
+    apply(case_tac "a\<sharp>M'")
+    apply(simp add: forget)
+    apply(simp add: not_Ax1)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh subst_fresh fresh_prod fresh_atm)
+    apply(simp add: fresh_prod subst_fresh fresh_atm abs_fresh)
+    apply(auto)[1]
+    apply(case_tac "y\<sharp>M''")
+    apply(simp add: forget)
+    apply(simp add: not_Ax2)
+    apply(simp add: forget)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: subst_fresh fresh_atm)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(auto)[1]
+    apply(case_tac "y\<sharp>M''")
+    apply(simp add: forget)
+    apply(simp add: not_Ax2)
+    apply(case_tac "a\<sharp>M'")
+    apply(simp add: forget)
+    apply(simp add: not_Ax1)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: subst_fresh)
+    apply(simp add: subst_fresh abs_fresh)
+    apply(simp)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: subst_fresh fresh_atm)
+    apply(simp add: subst_fresh abs_fresh)
+    apply(auto)[1]
+    apply(case_tac "y\<sharp>M''")
+    apply(simp add: forget)
+    apply(simp add: not_Ax2)
+    done
+next
+  case (NotR z M' d) 
+  then show ?case
+    apply(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget)
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(y,P,N,N{y:=<b>.P},M'{d:=(x).N},M'{y:=<b>.P}{d:=(x).N{y:=<b>.P}})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_NotR)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(simp add: fresh_prod subst_fresh fresh_atm)
+    apply(simp)
+    apply(simp add: trm.inject alpha)
+    apply(rule trans)
+    apply(rule substn.simps)
+    apply(simp add: fresh_prod fresh_atm)
+    apply(simp add: fresh_atm)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    done
+next
+  case (NotL d M' z) 
+  then show ?case
+    apply(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget trm.inject)
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(z,y,P,N,N{y:=<b>.P},M'{y:=<b>.P},M'{y:=<b>.P}{a:=(x).N{y:=<b>.P}})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_NotL)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(simp add: fresh_prod subst_fresh fresh_atm abs_fresh)
+    apply(simp)
+    apply(simp add: trm.inject alpha forget)
+    apply(rule trans)
+    apply(rule substc.simps)
+    apply(simp add: fresh_prod fresh_atm)
+    apply(simp add: fresh_atm subst_fresh)
+    apply(simp)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case (AndR d M' e M'' f) 
+  then show ?case
+    apply(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget trm.inject)
+    apply(subgoal_tac "\<exists>a'::coname. a'\<sharp>(P,b,d,e,N,N{y:=<b>.P},M'{f:=(x).N},M''{f:=(x).N},
+                  M'{y:=<b>.P}{f:=(x).N{y:=<b>.P}},M''{y:=<b>.P}{f:=(x).N{y:=<b>.P}})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_AndR)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(simp add: fresh_prod subst_fresh fresh_atm abs_fresh)
+    apply(simp)
+    apply(simp add: trm.inject alpha forget)
+    apply(rule trans)
+    apply(rule substn.simps)
+    apply(simp add: fresh_prod fresh_atm subst_fresh)
+    apply(simp add: fresh_atm subst_fresh)
+    apply(simp add: fresh_atm)
+    apply(simp)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    done
+next
+  case (AndL1 z M' u) 
+  then show ?case
+    apply(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget trm.inject)
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(P,b,z,u,x,N,M'{y:=<b>.P},M'{y:=<b>.P}{a:=(x).N{y:=<b>.P}})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_AndL1)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(simp add: fresh_prod subst_fresh fresh_atm abs_fresh)
+    apply(simp)
+    apply(simp add: trm.inject alpha forget)
+    apply(rule trans)
+    apply(rule substc.simps)
+    apply(simp add: fresh_prod fresh_atm subst_fresh)
+    apply(simp)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case (AndL2 z M' u) 
+  then show ?case
+    apply(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget trm.inject)
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(P,b,z,u,x,N,M'{y:=<b>.P},M'{y:=<b>.P}{a:=(x).N{y:=<b>.P}})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_AndL2)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(simp add: fresh_prod subst_fresh fresh_atm abs_fresh)
+    apply(simp)
+    apply(simp add: trm.inject alpha forget)
+    apply(rule trans)
+    apply(rule substc.simps)
+    apply(simp add: fresh_prod fresh_atm subst_fresh)
+    apply(simp)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case (OrL u M' v M'' w) 
+  then show ?case
+    apply(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget trm.inject)
+    apply(subgoal_tac "\<exists>z'::name. z'\<sharp>(P,b,u,w,v,N,N{y:=<b>.P},M'{y:=<b>.P},M''{y:=<b>.P},
+                  M'{y:=<b>.P}{a:=(x).N{y:=<b>.P}},M''{y:=<b>.P}{a:=(x).N{y:=<b>.P}})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_OrL)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(simp add: fresh_prod subst_fresh fresh_atm abs_fresh)
+    apply(simp)
+    apply(simp add: trm.inject alpha forget)
+    apply(rule trans)
+    apply(rule substc.simps)
+    apply(simp add: fresh_prod fresh_atm subst_fresh)
+    apply(simp add: fresh_atm subst_fresh)
+    apply(simp add: fresh_atm)
+    apply(simp)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case (OrR1 e M' f) 
+  then show ?case
+    apply(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget trm.inject)
+    apply(subgoal_tac "\<exists>c'::coname. c'\<sharp>(P,b,e,f,x,N,N{y:=<b>.P},
+                                        M'{f:=(x).N},M'{y:=<b>.P}{f:=(x).N{y:=<b>.P}})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_OrR1)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(simp add: fresh_prod subst_fresh fresh_atm abs_fresh)
+    apply(simp)
+    apply(simp add: trm.inject alpha forget)
+    apply(rule trans)
+    apply(rule substn.simps)
+    apply(simp add: fresh_prod fresh_atm subst_fresh)
+    apply(simp)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    done
+next
+  case (OrR2 e M' f) 
+  then show ?case
+    apply(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget trm.inject)
+    apply(subgoal_tac "\<exists>c'::coname. c'\<sharp>(P,b,e,f,x,N,N{y:=<b>.P},
+                                        M'{f:=(x).N},M'{y:=<b>.P}{f:=(x).N{y:=<b>.P}})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_OrR2)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(simp add: fresh_prod subst_fresh fresh_atm abs_fresh)
+    apply(simp)
+    apply(simp add: trm.inject alpha forget)
+    apply(rule trans)
+    apply(rule substn.simps)
+    apply(simp add: fresh_prod fresh_atm subst_fresh)
+    apply(simp)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    done
+next
+  case (ImpR x e M' f) 
+  then show ?case
+    apply(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget trm.inject)
+    apply(subgoal_tac "\<exists>c'::coname. c'\<sharp>(P,b,e,f,x,N,N{y:=<b>.P},
+                                        M'{f:=(x).N},M'{y:=<b>.P}{f:=(x).N{y:=<b>.P}})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_ImpR)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(simp add: fresh_prod subst_fresh fresh_atm abs_fresh)
+    apply(simp)
+    apply(simp add: trm.inject alpha forget)
+    apply(rule trans)
+    apply(rule substn.simps)
+    apply(simp add: fresh_prod fresh_atm subst_fresh)
+    apply(simp add: fresh_atm)
+    apply(simp add: fresh_atm trm.inject alpha abs_fresh fin_supp abs_supp)
+    apply(rule exists_fresh'(2)[OF fs_coname1])
+    apply(simp add: fresh_atm trm.inject alpha abs_fresh fin_supp abs_supp)
+    done
+next
+  case (ImpL e M' v M'' w) 
+  then show ?case
+    apply(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget trm.inject)
+    apply(subgoal_tac "\<exists>z'::name. z'\<sharp>(P,b,e,w,v,N,N{y:=<b>.P},M'{w:=<b>.P},M''{w:=<b>.P},
+                  M'{w:=<b>.P}{a:=(x).N{w:=<b>.P}},M''{w:=<b>.P}{a:=(x).N{w:=<b>.P}})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_ImpL)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(simp add: fresh_prod subst_fresh fresh_atm abs_fresh)
+    apply(simp)
+    apply(simp add: trm.inject alpha forget)
+    apply(rule trans)
+    apply(rule substc.simps)
+    apply(simp add: fresh_prod fresh_atm subst_fresh)
+    apply(simp add: fresh_atm subst_fresh)
+    apply(simp add: fresh_atm)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+qed
+
+lemma subst_subst3:
+  assumes a: "a\<sharp>(P,N,c)" "c\<sharp>(M,N)" "x\<sharp>(y,P,M)" "y\<sharp>(P,x)" "M\<noteq>Ax y a"
+  shows "N{x:=<a>.M}{y:=<c>.P} = N{y:=<c>.P}{x:=<a>.(M{y:=<c>.P})}"
+using a
+proof(nominal_induct N avoiding: x y a c M P rule: trm.induct)
+  case (Ax z c)
+  then show ?case
+    by(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget)
+next
+  case (Cut d M' u M'')
+  then show ?case
+    apply(simp add: fresh_atm fresh_prod trm.inject abs_fresh)
+    apply(auto)
+    apply(simp add: fresh_atm)
+    apply(simp add: trm.inject)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(simp add: fresh_prod subst_fresh fresh_atm)
+    apply(subgoal_tac "P \<noteq> Ax x c")
+    apply(simp)
+    apply(simp add: forget)
+    apply(clarify)
+    apply(simp add: fresh_atm)
+    apply(case_tac "x\<sharp>M'")
+    apply(simp add: forget)
+    apply(simp add: not_Ax2)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(simp add: fresh_prod subst_fresh fresh_atm)
+    apply(simp)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(simp add: fresh_prod subst_fresh fresh_atm)
+    apply(auto)
+    apply(case_tac "y\<sharp>M'")
+    apply(simp add: forget)
+    apply(simp add: not_Ax2)
+    done
+next
+  case NotR
+  then show ?case
+    by(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget)
+next
+  case (NotL d M' u)
+  then show ?case
+    apply(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget)
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(y,P,M,M{y:=<c>.P},M'{x:=<a>.M},M'{y:=<c>.P}{x:=<a>.M{y:=<c>.P}})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_NotL)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(simp add: fresh_prod subst_fresh fresh_atm)
+    apply(simp)
+    apply(simp add: trm.inject alpha)
+    apply(rule trans)
+    apply(rule substn.simps)
+    apply(simp add: fresh_prod fresh_atm)
+    apply(simp add: fresh_atm)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(x,y,P,M,M'{y:=<c>.P},M'{y:=<c>.P}{x:=<a>.M{y:=<c>.P}})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_NotL)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(simp add: fresh_atm subst_fresh fresh_prod)
+    apply(subgoal_tac "P \<noteq> Ax x c")
+    apply(simp)
+    apply(simp add: forget trm.inject alpha)
+    apply(rule trans)
+    apply(rule substn.simps)
+    apply(simp add: fresh_atm subst_fresh)
+    apply(simp add: fresh_atm)
+    apply(clarify)
+    apply(simp add: fresh_atm)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case AndR
+  then show ?case
+    by(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget)
+next
+  case (AndL1 u M' v)
+  then show ?case
+    apply(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget)
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(u,y,v,P,M,M{y:=<c>.P},M'{x:=<a>.M},M'{y:=<c>.P}{x:=<a>.M{y:=<c>.P}})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_AndL1)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(simp add: fresh_prod subst_fresh fresh_atm)
+    apply(simp)
+    apply(simp add: trm.inject alpha)
+    apply(rule trans)
+    apply(rule substn.simps)
+    apply(simp add: fresh_prod fresh_atm)
+    apply(simp add: fresh_atm)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(x,y,u,v,P,M,M'{y:=<c>.P},M'{y:=<c>.P}{x:=<a>.M{y:=<c>.P}})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_AndL1)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(simp add: fresh_atm subst_fresh fresh_prod)
+    apply(subgoal_tac "P \<noteq> Ax x c")
+    apply(simp)
+    apply(simp add: forget trm.inject alpha)
+    apply(rule trans)
+    apply(rule substn.simps)
+    apply(simp add: fresh_atm subst_fresh)
+    apply(simp add: fresh_atm)
+    apply(clarify)
+    apply(simp add: fresh_atm)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case (AndL2 u M' v)
+  then show ?case
+    apply(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget)
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(u,y,v,P,M,M{y:=<c>.P},M'{x:=<a>.M},M'{y:=<c>.P}{x:=<a>.M{y:=<c>.P}})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_AndL2)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(simp add: fresh_prod subst_fresh fresh_atm)
+    apply(simp)
+    apply(simp add: trm.inject alpha)
+    apply(rule trans)
+    apply(rule substn.simps)
+    apply(simp add: fresh_prod fresh_atm)
+    apply(simp add: fresh_atm)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(x,y,u,v,P,M,M'{y:=<c>.P},M'{y:=<c>.P}{x:=<a>.M{y:=<c>.P}})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_AndL2)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(simp add: fresh_atm subst_fresh fresh_prod)
+    apply(subgoal_tac "P \<noteq> Ax x c")
+    apply(simp)
+    apply(simp add: forget trm.inject alpha)
+    apply(rule trans)
+    apply(rule substn.simps)
+    apply(simp add: fresh_atm subst_fresh)
+    apply(simp add: fresh_atm)
+    apply(clarify)
+    apply(simp add: fresh_atm)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case OrR1
+  then show ?case
+    by(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget)
+next
+  case OrR2
+  then show ?case
+    by(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget)
+next
+  case (OrL x1 M' x2 M'' x3)
+  then show ?case
+    apply(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget)
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(y,P,M,M{y:=<c>.P},M'{x:=<a>.M},M'{y:=<c>.P}{x:=<a>.M{y:=<c>.P}},
+                                      x1,x2,x3,M''{x:=<a>.M},M''{y:=<c>.P}{x:=<a>.M{y:=<c>.P}})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_OrL)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(simp add: fresh_prod subst_fresh fresh_atm)
+    apply(simp)
+    apply(simp add: trm.inject alpha)
+    apply(rule trans)
+    apply(rule substn.simps)
+    apply(simp add: fresh_prod fresh_atm subst_fresh)
+    apply(simp add: fresh_prod fresh_atm subst_fresh)
+    apply(simp add: fresh_atm)
+    apply(simp add: fresh_atm)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(x,y,P,M,M'{y:=<c>.P},M'{y:=<c>.P}{x:=<a>.M{y:=<c>.P}},
+                                      x1,x2,x3,M''{y:=<c>.P},M''{y:=<c>.P}{x:=<a>.M{y:=<c>.P}})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_OrL)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(simp add: fresh_atm subst_fresh fresh_prod)
+    apply(simp add: fresh_prod fresh_atm)
+    apply(auto)
+    apply(simp add: fresh_atm)
+    apply(simp add: forget trm.inject alpha)
+    apply(rule trans)
+    apply(rule substn.simps)
+    apply(simp add: fresh_atm subst_fresh)
+    apply(simp add: fresh_atm subst_fresh)
+    apply(simp add: fresh_atm)
+    apply(simp add: fresh_atm)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+next
+  case ImpR
+  then show ?case
+    by(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget)
+next
+  case (ImpL d M' x1 M'' x2)
+  then show ?case
+    apply(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget)
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(y,P,M,M{y:=<c>.P},M'{x2:=<a>.M},M'{y:=<c>.P}{x2:=<a>.M{y:=<c>.P}},
+                                      x1,x2,M''{x2:=<a>.M},M''{y:=<c>.P}{x2:=<a>.M{y:=<c>.P}})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_ImpL)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(simp add: fresh_prod subst_fresh fresh_atm)
+    apply(simp)
+    apply(simp add: trm.inject alpha)
+    apply(rule trans)
+    apply(rule substn.simps)
+    apply(simp add: fresh_prod fresh_atm subst_fresh)
+    apply(simp add: fresh_prod fresh_atm subst_fresh)
+    apply(simp add: fresh_atm)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    apply(subgoal_tac "\<exists>x'::name. x'\<sharp>(x,y,P,M,M'{x2:=<c>.P},M'{x2:=<c>.P}{x:=<a>.M{x2:=<c>.P}},
+                                      x1,x2,M''{x2:=<c>.P},M''{x2:=<c>.P}{x:=<a>.M{x2:=<c>.P}})")
+    apply(erule exE, simp add: fresh_prod)
+    apply(erule conjE)+
+    apply(simp add: fresh_fun_simp_ImpL)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(simp add: fresh_atm subst_fresh fresh_prod)
+    apply(simp add: fresh_prod fresh_atm)
+    apply(auto)
+    apply(simp add: fresh_atm)
+    apply(simp add: forget trm.inject alpha)
+    apply(rule trans)
+    apply(rule substn.simps)
+    apply(simp add: fresh_atm subst_fresh)
+    apply(simp add: fresh_atm subst_fresh)
+    apply(simp add: fresh_atm)
+    apply(rule exists_fresh'(1)[OF fs_name1])
+    done
+qed
+
+lemma subst_subst4:
+  assumes a: "x\<sharp>(P,N,y)" "y\<sharp>(M,N)" "a\<sharp>(c,P,M)" "c\<sharp>(P,a)" "M\<noteq>Ax x c"
+  shows "N{a:=(x).M}{c:=(y).P} = N{c:=(y).P}{a:=(x).(M{c:=(y).P})}"
+using a
+proof(nominal_induct N avoiding: x y a c M P rule: trm.induct)
+  case (Ax z c)
+  then show ?case
+    by (auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget)
+next
+  case (Cut d M' u M'')
+  then show ?case
+    apply(simp add: fresh_atm fresh_prod trm.inject abs_fresh)
+    apply(auto)
+    apply(simp add: fresh_atm)
+    apply(simp add: trm.inject)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh subst_fresh fresh_atm)
+    apply(simp add: fresh_prod subst_fresh abs_fresh fresh_atm)
+    apply(subgoal_tac "P \<noteq> Ax y a")
+    apply(simp)
+    apply(simp add: forget)
+    apply(clarify)
+    apply(simp add: fresh_atm)
+    apply(case_tac "a\<sharp>M''")
+    apply(simp add: forget)
+    apply(simp add: not_Ax1)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: fresh_prod subst_fresh fresh_atm)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(simp)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: fresh_prod subst_fresh fresh_atm)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(auto)
+    apply(case_tac "c\<sharp>M''")
+    apply(simp add: forget)
+    apply(simp add: not_Ax1)
+    done
+next
+  case NotL
+  then show ?case
+    by(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget)
+next
+  case (NotR u M' d)
+  then show ?case
+    apply(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget)
+    apply(generate_fresh "coname")
+    apply(fresh_fun_simp)
+    apply(fresh_fun_simp)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp add: trm.inject alpha)
+    apply(rule trans)
+    apply(rule substc.simps)
+    apply(simp add: fresh_prod fresh_atm)
+    apply(auto simp add: fresh_atm fresh_prod)[1]
+    apply(generate_fresh "coname")
+    apply(fresh_fun_simp)
+    apply(fresh_fun_simp)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: fresh_prod fresh_atm subst_fresh)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(auto simp add: fresh_atm)
+    apply(simp add: trm.inject alpha forget)
+    apply(rule trans)
+    apply(rule substc.simps)
+    apply(simp add: fresh_atm subst_fresh)
+    apply(auto simp add: fresh_prod fresh_atm) 
+    done
+next
+  case AndL1
+  then show ?case
+    by(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget)
+next
+  case AndL2
+  then show ?case
+    by(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget)
+next
+  case (AndR d M e M' f)
+  then show ?case
+    apply(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget)
+    apply(generate_fresh "coname")
+    apply(fresh_fun_simp)
+    apply(fresh_fun_simp)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp add: trm.inject alpha)
+    apply(rule trans)
+    apply(rule substc.simps)
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)[1]
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)[1]
+    apply(simp)
+    apply(auto simp add: fresh_atm fresh_prod)[1]
+    apply(generate_fresh "coname")
+    apply(fresh_fun_simp)
+    apply(fresh_fun_simp)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: subst_fresh fresh_atm fresh_prod)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(auto simp add: fresh_atm)[1]
+    apply(simp add: trm.inject alpha forget)
+    apply(rule trans)
+    apply(rule substc.simps)
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)[1]
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)[1]
+    apply(simp)
+    apply(auto simp add: fresh_atm fresh_prod)[1]
+    done
+next
+  case OrL
+  then show ?case
+    by(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget)
+next
+  case (OrR1 d M' e)
+  then show ?case
+    apply(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget)
+    apply(generate_fresh "coname")
+    apply(fresh_fun_simp)
+    apply(fresh_fun_simp)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp add: trm.inject alpha)
+    apply(rule trans)
+    apply(rule substc.simps)
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)[1]
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)[1]
+    apply(generate_fresh "coname")
+    apply(fresh_fun_simp)
+    apply(fresh_fun_simp)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: subst_fresh fresh_atm fresh_prod)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(auto simp add: fresh_atm)[1]
+    apply(simp add: trm.inject alpha forget)
+    apply(rule trans)
+    apply(rule substc.simps)
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)[1]
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)[1]
+    done
+next
+  case (OrR2 d M' e)
+  then show ?case
+    apply(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget)
+    apply(generate_fresh "coname")
+    apply(fresh_fun_simp)
+    apply(fresh_fun_simp)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp add: trm.inject alpha)
+    apply(rule trans)
+    apply(rule substc.simps)
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)[1]
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)[1]
+    apply(generate_fresh "coname")
+    apply(fresh_fun_simp)
+    apply(fresh_fun_simp)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: subst_fresh fresh_atm fresh_prod)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(auto simp add: fresh_atm)[1]
+    apply(simp add: trm.inject alpha forget)
+    apply(rule trans)
+    apply(rule substc.simps)
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)[1]
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)[1]
+    done
+next
+  case ImpL
+  then show ?case
+    by(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget)
+next
+  case (ImpR u d M' e)
+  then show ?case
+    apply(auto simp add: subst_fresh abs_fresh fresh_atm fresh_prod forget)
+    apply(generate_fresh "coname")
+    apply(fresh_fun_simp)
+    apply(fresh_fun_simp)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp add: trm.inject alpha)
+    apply(rule trans)
+    apply(rule substc.simps)
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)[1]
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)[1]
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh abs_fresh abs_supp fin_supp)[1]
+    apply(generate_fresh "coname")
+    apply(fresh_fun_simp)
+    apply(fresh_fun_simp)
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule better_Cut_substc)
+    apply(simp add: subst_fresh fresh_atm fresh_prod)
+    apply(simp add: abs_fresh subst_fresh)
+    apply(auto simp add: fresh_atm)[1]
+    apply(simp add: trm.inject alpha forget)
+    apply(rule trans)
+    apply(rule substc.simps)
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)[1]
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh)[1]
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh abs_fresh abs_supp fin_supp)[1]
+    apply(auto simp add: fresh_prod fresh_atm subst_fresh abs_fresh abs_supp fin_supp)[1]
+    done
+qed
+
+text {* Reduction *}
+
+lemma fin_not_Cut:
+  assumes a: "fin M x"
+  shows "\<not>(\<exists>a M' x N'. M = Cut <a>.M' (x).N')"
+using a
+by (induct) (auto)
+
+lemma fresh_not_fin:
+  assumes a: "x\<sharp>M"
+  shows "\<not>fin M x"
+proof -
+  have "fin M x \<Longrightarrow> x\<sharp>M \<Longrightarrow> False" by (induct rule: fin.induct) (auto simp add: abs_fresh fresh_atm)
+  with a show "\<not>fin M x" by blast
+qed
+
+lemma fresh_not_fic:
+  assumes a: "a\<sharp>M"
+  shows "\<not>fic M a"
+proof -
+  have "fic M a \<Longrightarrow> a\<sharp>M \<Longrightarrow> False" by (induct rule: fic.induct) (auto simp add: abs_fresh fresh_atm)
+  with a show "\<not>fic M a" by blast
+qed
+
+lemma c_redu_subst1:
+  assumes a: "M \<longrightarrow>\<^isub>c M'" "c\<sharp>M" "y\<sharp>P"
+  shows "M{y:=<c>.P} \<longrightarrow>\<^isub>c M'{y:=<c>.P}"
+using a
+proof(nominal_induct avoiding: y c P rule: c_redu.strong_induct)
+  case (left M a N x)
+  then show ?case
+    apply -
+    apply(simp)
+    apply(rule conjI)
+    apply(force)
+    apply(auto)
+    apply(subgoal_tac "M{a:=(x).N}{y:=<c>.P} = M{y:=<c>.P}{a:=(x).(N{y:=<c>.P})}")(*A*)
+    apply(simp)
+    apply(rule c_redu.intros)
+    apply(rule not_fic_subst1)
+    apply(simp)
+    apply(simp add: subst_fresh)
+    apply(simp add: subst_fresh)
+    apply(simp add: abs_fresh fresh_atm)
+    apply(rule subst_subst2)
+    apply(simp add: fresh_prod fresh_atm)
+    apply(simp add: fresh_prod fresh_atm)
+    apply(simp add: fresh_prod fresh_atm)
+    apply(simp)
+    done
+next
+  case (right N x a M)
+  then show ?case
+    apply -
+    apply(simp)
+    apply(rule conjI)
+    (* case M = Ax y a *)
+    apply(rule impI)
+    apply(subgoal_tac "N{x:=<a>.Ax y a}{y:=<c>.P} = N{y:=<c>.P}{x:=<c>.P}")
+    apply(simp)
+    apply(rule c_redu.right)
+    apply(rule not_fin_subst2)
+    apply(simp)
+    apply(rule subst_fresh)
+    apply(simp add: abs_fresh)
+    apply(simp add: abs_fresh)
+    apply(rule sym)
+    apply(rule interesting_subst1')
+    apply(simp add: fresh_atm)
+    apply(simp)
+    apply(simp)
+    (* case M \<noteq> Ax y a*)
+    apply(rule impI)
+    apply(subgoal_tac "N{x:=<a>.M}{y:=<c>.P} = N{y:=<c>.P}{x:=<a>.(M{y:=<c>.P})}")
+    apply(simp)
+    apply(rule c_redu.right)
+    apply(rule not_fin_subst2)
+    apply(simp)
+    apply(simp add: subst_fresh)
+    apply(simp add: subst_fresh)
+    apply(simp add: abs_fresh fresh_atm)
+    apply(rule subst_subst3)
+    apply(simp_all add: fresh_atm fresh_prod)
+    done
+qed
+
+lemma c_redu_subst2:
+  assumes a: "M \<longrightarrow>\<^isub>c M'" "c\<sharp>P" "y\<sharp>M"
+  shows "M{c:=(y).P} \<longrightarrow>\<^isub>c M'{c:=(y).P}"
+using a
+proof(nominal_induct avoiding: y c P rule: c_redu.strong_induct)
+  case (right N x a M)
+  then show ?case
+    apply -
+    apply(simp)
+    apply(rule conjI)
+    apply(force)
+    apply(auto)
+    apply(subgoal_tac "N{x:=<a>.M}{c:=(y).P} = N{c:=(y).P}{x:=<a>.(M{c:=(y).P})}")(*A*)
+    apply(simp)
+    apply(rule c_redu.intros)
+    apply(rule not_fin_subst1)
+    apply(simp)
+    apply(simp add: subst_fresh)
+    apply(simp add: subst_fresh)
+    apply(simp add: abs_fresh fresh_atm)
+    apply(rule subst_subst1)
+    apply(simp add: fresh_prod fresh_atm)
+    apply(simp add: fresh_prod fresh_atm)
+    apply(simp add: fresh_prod fresh_atm)
+    apply(simp)
+    done
+next
+  case (left M a N x)
+  then show ?case
+    apply -
+    apply(simp)
+    apply(rule conjI)
+    (* case N = Ax x c *)
+    apply(rule impI)
+    apply(subgoal_tac "M{a:=(x).Ax x c}{c:=(y).P} = M{c:=(y).P}{a:=(y).P}")
+    apply(simp)
+    apply(rule c_redu.left)
+    apply(rule not_fic_subst2)
+    apply(simp)
+    apply(simp)
+    apply(rule subst_fresh)
+    apply(simp add: abs_fresh)
+    apply(rule sym)
+    apply(rule interesting_subst2')
+    apply(simp add: fresh_atm)
+    apply(simp)
+    apply(simp)
+    (* case M \<noteq> Ax y a*)
+    apply(rule impI)
+    apply(subgoal_tac "M{a:=(x).N}{c:=(y).P} = M{c:=(y).P}{a:=(x).(N{c:=(y).P})}")
+    apply(simp)
+    apply(rule c_redu.left)
+    apply(rule not_fic_subst2)
+    apply(simp)
+    apply(simp add: subst_fresh)
+    apply(simp add: subst_fresh)
+    apply(simp add: abs_fresh fresh_atm)
+    apply(rule subst_subst4)
+    apply(simp add: fresh_prod fresh_atm)
+    apply(simp add: fresh_prod fresh_atm)
+    apply(simp add: fresh_prod fresh_atm)
+    apply(simp add: fresh_prod fresh_atm)
+    apply(simp)
+    done
+qed
+
+lemma c_redu_subst1':
+  assumes a: "M \<longrightarrow>\<^isub>c M'" 
+  shows "M{y:=<c>.P} \<longrightarrow>\<^isub>c M'{y:=<c>.P}"
+using a
+proof -
+  obtain y'::"name"   where fs1: "y'\<sharp>(M,M',P,P,y)" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain c'::"coname" where fs2: "c'\<sharp>(M,M',P,P,c)" by (rule exists_fresh(2), rule fin_supp, blast)
+  have "M{y:=<c>.P} = ([(y',y)]\<bullet>M){y':=<c'>.([(c',c)]\<bullet>P)}" using fs1 fs2
+    apply -
+    apply(rule trans)
+    apply(rule_tac y="y'" in subst_rename(3))
+    apply(simp)
+    apply(rule subst_rename(4))
+    apply(simp)
+    done
+  also have "\<dots> \<longrightarrow>\<^isub>c ([(y',y)]\<bullet>M'){y':=<c'>.([(c',c)]\<bullet>P)}" using fs1 fs2
+    apply -
+    apply(rule c_redu_subst1)
+    apply(simp add: c_redu.eqvt a)
+    apply(simp_all add: fresh_left calc_atm fresh_prod)
+    done
+  also have "\<dots> = M'{y:=<c>.P}" using fs1 fs2
+    apply -
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule_tac y="y'" in subst_rename(3))
+    apply(simp)
+    apply(rule subst_rename(4))
+    apply(simp)
+    done
+  finally show ?thesis by simp
+qed
+
+lemma c_redu_subst2':
+  assumes a: "M \<longrightarrow>\<^isub>c M'" 
+  shows "M{c:=(y).P} \<longrightarrow>\<^isub>c M'{c:=(y).P}"
+using a
+proof -
+  obtain y'::"name"   where fs1: "y'\<sharp>(M,M',P,P,y)" by (rule exists_fresh(1), rule fin_supp, blast)
+  obtain c'::"coname" where fs2: "c'\<sharp>(M,M',P,P,c)" by (rule exists_fresh(2), rule fin_supp, blast)
+  have "M{c:=(y).P} = ([(c',c)]\<bullet>M){c':=(y').([(y',y)]\<bullet>P)}" using fs1 fs2
+    apply -
+    apply(rule trans)
+    apply(rule_tac c="c'" in subst_rename(1))
+    apply(simp)
+    apply(rule subst_rename(2))
+    apply(simp)
+    done
+  also have "\<dots> \<longrightarrow>\<^isub>c ([(c',c)]\<bullet>M'){c':=(y').([(y',y)]\<bullet>P)}" using fs1 fs2
+    apply -
+    apply(rule c_redu_subst2)
+    apply(simp add: c_redu.eqvt a)
+    apply(simp_all add: fresh_left calc_atm fresh_prod)
+    done
+  also have "\<dots> = M'{c:=(y).P}" using fs1 fs2
+    apply -
+    apply(rule sym)
+    apply(rule trans)
+    apply(rule_tac c="c'" in subst_rename(1))
+    apply(simp)
+    apply(rule subst_rename(2))
+    apply(simp)
+    done
+
+  finally show ?thesis by simp
+qed
+
+lemma aux1:
+  assumes a: "M = M'" "M' \<longrightarrow>\<^isub>l M''"
+  shows "M \<longrightarrow>\<^isub>l M''"
+using a by simp
+  
+lemma aux2:
+  assumes a: "M \<longrightarrow>\<^isub>l M'" "M' = M''"
+  shows "M \<longrightarrow>\<^isub>l M''"
+using a by simp
+
+lemma aux3:
+  assumes a: "M = M'" "M' \<longrightarrow>\<^isub>a* M''"
+  shows "M \<longrightarrow>\<^isub>a* M''"
+using a by simp
+
+lemma aux4:
+  assumes a: "M = M'"
+  shows "M \<longrightarrow>\<^isub>a* M'"
+using a by blast
+
+lemma l_redu_subst1:
+  assumes a: "M \<longrightarrow>\<^isub>l M'" 
+  shows "M{y:=<c>.P} \<longrightarrow>\<^isub>a* M'{y:=<c>.P}"
+using a
+proof(nominal_induct M M' avoiding: y c P rule: l_redu.strong_induct)
+  case LAxR
+  then show ?case
+    apply -
+    apply(rule aux3)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp add: fresh_atm)
+    apply(auto)
+    apply(rule aux4)
+    apply(simp add: trm.inject alpha calc_atm fresh_atm)
+    apply(rule a_star_trans)
+    apply(rule a_starI)
+    apply(rule al_redu)
+    apply(rule l_redu.intros)
+    apply(simp add: subst_fresh)
+    apply(simp add: fresh_atm)
+    apply(rule fic_subst2)
+    apply(simp_all)
+    apply(rule aux4)
+    apply(rule subst_comm')
+    apply(simp_all)
+    done
+next
+  case LAxL
+  then show ?case
+    apply -
+    apply(rule aux3)
+    apply(rule better_Cut_substn)
+    apply(simp add: abs_fresh)
+    apply(simp)
+    apply(simp add: trm.inject fresh_atm)
+    apply(auto)
+    apply(rule aux4)
+    apply(rule sym)
+    apply(rule fin_substn_nrename)
+    apply(simp_all)
+    apply(rule a_starI)
+    apply(rule al_redu)
+    apply(rule aux2)
+    apply(rule l_redu.intros)
+    apply(simp add: subst_fresh)
+    apply(simp add: fresh_atm)
+    apply(rule fin_subst1)
+    apply(simp_all)
+    apply(rule subst_comm')
+    apply(simp_all)
+    done
+next
+  case (LNot v M N u a b)
+  then show ?case
+  proof -
+    { assume asm: "N\<noteq>Ax y b"
+      have "(Cut <a>.NotR (u).M a (v).NotL <b>.N v){y:=<c>.P} = 
+        (Cut <a>.NotR (u).(M{y:=<c>.P}) a (v).NotL <b>.(N{y:=<c>.P}) v)" using prems
+	by (simp add: subst_fresh abs_fresh fresh_atm)
+      also have "\<dots> \<longrightarrow>\<^isub>l (Cut <b>.(N{y:=<c>.P}) (u).(M{y:=<c>.P}))" using prems
+	by (auto intro: l_redu.intros simp add: subst_fresh)
+      also have "\<dots> = (Cut <b>.N (u).M){y:=<c>.P}" using prems 
+	by (simp add: subst_fresh abs_fresh fresh_atm)
+      finally have ?thesis by auto
+    }
+    moreover
+    { assume asm: "N=Ax y b"
+      have "(Cut <a>.NotR (u).M a (v).NotL <b>.N v){y:=<c>.P} = 
+        (Cut <a>.NotR (u).(M{y:=<c>.P}) a (v).NotL <b>.(N{y:=<c>.P}) v)" using prems
+	by (simp add: subst_fresh abs_fresh fresh_atm)
+      also have "\<dots> \<longrightarrow>\<^isub>a* (Cut <b>.(N{y:=<c>.P}) (u).(M{y:=<c>.P}))" using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = (Cut <b>.(Cut <c>.P (y).Ax y b) (u).(M{y:=<c>.P}))" using prems
+	by simp
+      also have "\<dots> \<longrightarrow>\<^isub>a* (Cut <b>.(P[c\<turnstile>c>b]) (u).(M{y:=<c>.P}))" 
+      proof (cases "fic P c")
+	case True 
+	assume "fic P c"
+	then show ?thesis using prems
+	  apply -
+	  apply(rule a_starI)
+	  apply(rule better_CutL_intro)
+	  apply(rule al_redu)
+	  apply(rule better_LAxR_intro)
+	  apply(simp)
+	  done
+      next
+	case False 
+	assume "\<not>fic P c" 
+	then show ?thesis
+	  apply -
+	  apply(rule a_star_CutL)
+	  apply(rule a_star_trans)
+	  apply(rule a_starI)
+	  apply(rule ac_redu)
+	  apply(rule better_left)
+	  apply(simp)
+	  apply(simp add: subst_with_ax2)
+	  done
+      qed
+      also have "\<dots> = (Cut <b>.N (u).M){y:=<c>.P}" using prems
+	apply -
+	apply(auto simp add: subst_fresh abs_fresh)
+	apply(simp add: trm.inject)
+	apply(simp add: alpha fresh_atm)
+	apply(rule sym)
+	apply(rule crename_swap)
+	apply(simp)
+	done
+      finally have "(Cut <a>.NotR (u).M a (v).NotL <b>.N v){y:=<c>.P} \<longrightarrow>\<^isub>a* (Cut <b>.N (u).M){y:=<c>.P}" 
+	by simp
+    }
+    ultimately show ?thesis by blast
+  qed
+next
+  case (LAnd1 b a1 M1 a2 M2 N z u)
+  then show ?case
+  proof -
+    { assume asm: "M1\<noteq>Ax y a1"
+      have "(Cut <b>.AndR <a1>.M1 <a2>.M2 b (z).AndL1 (u).N z){y:=<c>.P} = 
+        Cut <b>.AndR <a1>.(M1{y:=<c>.P}) <a2>.(M2{y:=<c>.P}) b (z).AndL1 (u).(N{y:=<c>.P}) z" 
+	using prems by (simp add: subst_fresh abs_fresh fresh_atm)
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a1>.(M1{y:=<c>.P}) (u).(N{y:=<c>.P})"
+	using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = (Cut <a1>.M1 (u).N){y:=<c>.P}" using prems 
+	by (simp add: subst_fresh abs_fresh fresh_atm)
+      finally 
+      have "(Cut <b>.AndR <a1>.M1 <a2>.M2 b (z).AndL1 (u).N z){y:=<c>.P} \<longrightarrow>\<^isub>a* (Cut <a1>.M1 (u).N){y:=<c>.P}"
+	by simp
+    } 
+    moreover
+    { assume asm: "M1=Ax y a1"
+      have "(Cut <b>.AndR <a1>.M1 <a2>.M2 b (z).AndL1 (u).N z){y:=<c>.P} = 
+        Cut <b>.AndR <a1>.(M1{y:=<c>.P}) <a2>.(M2{y:=<c>.P}) b (z).AndL1 (u).(N{y:=<c>.P}) z" 
+	using prems by (simp add: subst_fresh abs_fresh fresh_atm)
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a1>.(M1{y:=<c>.P}) (u).(N{y:=<c>.P})"
+	using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = Cut <a1>.(Cut <c>.P (y). Ax y a1) (u).(N{y:=<c>.P})" 
+	using prems by simp
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a1>.P[c\<turnstile>c>a1] (u).(N{y:=<c>.P})"
+      proof (cases "fic P c")
+	case True 
+	assume "fic P c"
+	then show ?thesis using prems
+	  apply -
+	  apply(rule a_starI)
+	  apply(rule better_CutL_intro)
+	  apply(rule al_redu)
+	  apply(rule better_LAxR_intro)
+	  apply(simp)
+	  done
+      next
+	case False 
+	assume "\<not>fic P c" 
+	then show ?thesis
+	  apply -
+	  apply(rule a_star_CutL)
+	  apply(rule a_star_trans)
+	  apply(rule a_starI)
+	  apply(rule ac_redu)
+	  apply(rule better_left)
+	  apply(simp)
+	  apply(simp add: subst_with_ax2)
+	  done
+      qed
+      also have "\<dots> = (Cut <a1>.M1 (u).N){y:=<c>.P}" using prems
+	apply -
+	apply(auto simp add: subst_fresh abs_fresh)
+	apply(simp add: trm.inject)
+	apply(simp add: alpha fresh_atm)
+	apply(rule sym)
+	apply(rule crename_swap)
+	apply(simp)
+	done
+      finally 
+      have "(Cut <b>.AndR <a1>.M1 <a2>.M2 b (z).AndL1 (u).N z){y:=<c>.P} \<longrightarrow>\<^isub>a* (Cut <a1>.M1 (u).N){y:=<c>.P}"
+	by simp
+    }
+    ultimately show ?thesis by blast
+  qed
+next
+  case (LAnd2 b a1 M1 a2 M2 N z u)
+  then show ?case
+  proof -
+    { assume asm: "M2\<noteq>Ax y a2"
+      have "(Cut <b>.AndR <a1>.M1 <a2>.M2 b (z).AndL2 (u).N z){y:=<c>.P} = 
+        Cut <b>.AndR <a1>.(M1{y:=<c>.P}) <a2>.(M2{y:=<c>.P}) b (z).AndL2 (u).(N{y:=<c>.P}) z" 
+	using prems by (simp add: subst_fresh abs_fresh fresh_atm)
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a2>.(M2{y:=<c>.P}) (u).(N{y:=<c>.P})"
+	using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = (Cut <a2>.M2 (u).N){y:=<c>.P}" using prems 
+	by (simp add: subst_fresh abs_fresh fresh_atm)
+      finally 
+      have "(Cut <b>.AndR <a1>.M1 <a2>.M2 b (z).AndL2 (u).N z){y:=<c>.P} \<longrightarrow>\<^isub>a* (Cut <a2>.M2 (u).N){y:=<c>.P}"
+	by simp
+    } 
+    moreover
+    { assume asm: "M2=Ax y a2"
+      have "(Cut <b>.AndR <a1>.M1 <a2>.M2 b (z).AndL2 (u).N z){y:=<c>.P} = 
+        Cut <b>.AndR <a1>.(M1{y:=<c>.P}) <a2>.(M2{y:=<c>.P}) b (z).AndL2 (u).(N{y:=<c>.P}) z" 
+	using prems by (simp add: subst_fresh abs_fresh fresh_atm)
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a2>.(M2{y:=<c>.P}) (u).(N{y:=<c>.P})"
+	using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = Cut <a2>.(Cut <c>.P (y). Ax y a2) (u).(N{y:=<c>.P})" 
+	using prems by simp
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a2>.P[c\<turnstile>c>a2] (u).(N{y:=<c>.P})"
+      proof (cases "fic P c")
+	case True 
+	assume "fic P c"
+	then show ?thesis using prems
+	  apply -
+	  apply(rule a_starI)
+	  apply(rule better_CutL_intro)
+	  apply(rule al_redu)
+	  apply(rule better_LAxR_intro)
+	  apply(simp)
+	  done
+      next
+	case False 
+	assume "\<not>fic P c" 
+	then show ?thesis
+	  apply -
+	  apply(rule a_star_CutL)
+	  apply(rule a_star_trans)
+	  apply(rule a_starI)
+	  apply(rule ac_redu)
+	  apply(rule better_left)
+	  apply(simp)
+	  apply(simp add: subst_with_ax2)
+	  done
+      qed
+      also have "\<dots> = (Cut <a2>.M2 (u).N){y:=<c>.P}" using prems
+	apply -
+	apply(auto simp add: subst_fresh abs_fresh)
+	apply(simp add: trm.inject)
+	apply(simp add: alpha fresh_atm)
+	apply(rule sym)
+	apply(rule crename_swap)
+	apply(simp)
+	done
+      finally 
+      have "(Cut <b>.AndR <a1>.M1 <a2>.M2 b (z).AndL2 (u).N z){y:=<c>.P} \<longrightarrow>\<^isub>a* (Cut <a2>.M2 (u).N){y:=<c>.P}"
+	by simp
+    }
+    ultimately show ?thesis by blast
+  qed
+next
+  case (LOr1 b a M N1 N2 z x1 x2 y c P)
+  then show ?case
+  proof -
+    { assume asm: "M\<noteq>Ax y a"
+      have "(Cut <b>.OrR1 <a>.M b (z).OrL (x1).N1 (x2).N2 z){y:=<c>.P} = 
+        Cut <b>.OrR1 <a>.(M{y:=<c>.P}) b (z).OrL (x1).(N1{y:=<c>.P}) (x2).(N2{y:=<c>.P}) z" 
+	using prems by (simp add: subst_fresh abs_fresh fresh_atm)
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.(M{y:=<c>.P}) (x1).(N1{y:=<c>.P})"
+	using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = (Cut <a>.M (x1).N1){y:=<c>.P}" using prems 
+	by (simp add: subst_fresh abs_fresh fresh_atm)
+      finally 
+      have "(Cut <b>.OrR1 <a>.M b (z).OrL (x1).N1 (x2).N2 z){y:=<c>.P} \<longrightarrow>\<^isub>a* (Cut <a>.M (x1).N1){y:=<c>.P}"
+	by simp
+    } 
+    moreover
+    { assume asm: "M=Ax y a"
+      have "(Cut <b>.OrR1 <a>.M b (z).OrL (x1).N1 (x2).N2 z){y:=<c>.P} = 
+        Cut <b>.OrR1 <a>.(M{y:=<c>.P}) b (z).OrL (x1).(N1{y:=<c>.P}) (x2).(N2{y:=<c>.P}) z" 
+	using prems by (simp add: subst_fresh abs_fresh fresh_atm)
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.(M{y:=<c>.P}) (x1).(N1{y:=<c>.P})"
+	using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = Cut <a>.(Cut <c>.P (y). Ax y a) (x1).(N1{y:=<c>.P})" 
+	using prems by simp
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.P[c\<turnstile>c>a] (x1).(N1{y:=<c>.P})"
+      proof (cases "fic P c")
+	case True 
+	assume "fic P c"
+	then show ?thesis using prems
+	  apply -
+	  apply(rule a_starI)
+	  apply(rule better_CutL_intro)
+	  apply(rule al_redu)
+	  apply(rule better_LAxR_intro)
+	  apply(simp)
+	  done
+      next
+	case False 
+	assume "\<not>fic P c" 
+	then show ?thesis
+	  apply -
+	  apply(rule a_star_CutL)
+	  apply(rule a_star_trans)
+	  apply(rule a_starI)
+	  apply(rule ac_redu)
+	  apply(rule better_left)
+	  apply(simp)
+	  apply(simp add: subst_with_ax2)
+	  done
+      qed
+      also have "\<dots> = (Cut <a>.M (x1).N1){y:=<c>.P}" using prems
+	apply -
+	apply(auto simp add: subst_fresh abs_fresh)
+	apply(simp add: trm.inject)
+	apply(simp add: alpha fresh_atm)
+	apply(rule sym)
+	apply(rule crename_swap)
+	apply(simp)
+	done
+      finally 
+      have "(Cut <b>.OrR1 <a>.M b (z).OrL (x1).N1 (x2).N2 z){y:=<c>.P} \<longrightarrow>\<^isub>a* (Cut <a>.M (x1).N1){y:=<c>.P}"
+	by simp
+    }
+    ultimately show ?thesis by blast
+  qed
+next
+  case (LOr2 b a M N1 N2 z x1 x2 y c P)
+  then show ?case
+  proof -
+    { assume asm: "M\<noteq>Ax y a"
+      have "(Cut <b>.OrR2 <a>.M b (z).OrL (x1).N1 (x2).N2 z){y:=<c>.P} = 
+        Cut <b>.OrR2 <a>.(M{y:=<c>.P}) b (z).OrL (x1).(N1{y:=<c>.P}) (x2).(N2{y:=<c>.P}) z" 
+	using prems by (simp add: subst_fresh abs_fresh fresh_atm)
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.(M{y:=<c>.P}) (x2).(N2{y:=<c>.P})"
+	using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = (Cut <a>.M (x2).N2){y:=<c>.P}" using prems 
+	by (simp add: subst_fresh abs_fresh fresh_atm)
+      finally 
+      have "(Cut <b>.OrR2 <a>.M b (z).OrL (x1).N1 (x2).N2 z){y:=<c>.P} \<longrightarrow>\<^isub>a* (Cut <a>.M (x2).N2){y:=<c>.P}"
+	by simp
+    } 
+    moreover
+    { assume asm: "M=Ax y a"
+      have "(Cut <b>.OrR2 <a>.M b (z).OrL (x1).N1 (x2).N2 z){y:=<c>.P} = 
+        Cut <b>.OrR2 <a>.(M{y:=<c>.P}) b (z).OrL (x1).(N1{y:=<c>.P}) (x2).(N2{y:=<c>.P}) z" 
+	using prems by (simp add: subst_fresh abs_fresh fresh_atm)
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.(M{y:=<c>.P}) (x2).(N2{y:=<c>.P})"
+	using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = Cut <a>.(Cut <c>.P (y). Ax y a) (x2).(N2{y:=<c>.P})" 
+	using prems by simp
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.P[c\<turnstile>c>a] (x2).(N2{y:=<c>.P})"
+      proof (cases "fic P c")
+	case True 
+	assume "fic P c"
+	then show ?thesis using prems
+	  apply -
+	  apply(rule a_starI)
+	  apply(rule better_CutL_intro)
+	  apply(rule al_redu)
+	  apply(rule better_LAxR_intro)
+	  apply(simp)
+	  done
+      next
+	case False 
+	assume "\<not>fic P c" 
+	then show ?thesis
+	  apply -
+	  apply(rule a_star_CutL)
+	  apply(rule a_star_trans)
+	  apply(rule a_starI)
+	  apply(rule ac_redu)
+	  apply(rule better_left)
+	  apply(simp)
+	  apply(simp add: subst_with_ax2)
+	  done
+      qed
+      also have "\<dots> = (Cut <a>.M (x2).N2){y:=<c>.P}" using prems
+	apply -
+	apply(auto simp add: subst_fresh abs_fresh)
+	apply(simp add: trm.inject)
+	apply(simp add: alpha fresh_atm)
+	apply(rule sym)
+	apply(rule crename_swap)
+	apply(simp)
+	done
+      finally 
+      have "(Cut <b>.OrR2 <a>.M b (z).OrL (x1).N1 (x2).N2 z){y:=<c>.P} \<longrightarrow>\<^isub>a* (Cut <a>.M (x2).N2){y:=<c>.P}"
+	by simp
+    }
+    ultimately show ?thesis by blast
+  qed
+next
+  case (LImp z N u Q x M b a d y c P)
+  then show ?case
+  proof -
+    { assume asm: "N\<noteq>Ax y d"
+      have "(Cut <b>.ImpR (x).<a>.M b (z).ImpL <d>.N (u).Q z){y:=<c>.P} = 
+        Cut <b>.ImpR (x).<a>.(M{y:=<c>.P}) b (z).ImpL <d>.(N{y:=<c>.P}) (u).(Q{y:=<c>.P}) z" 
+	using prems by (simp add: fresh_prod abs_fresh fresh_atm)
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.(Cut <d>.(N{y:=<c>.P})  (x).(M{y:=<c>.P})) (u).(Q{y:=<c>.P})"
+	using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = (Cut <a>.(Cut <d>.N  (x).M) (u).Q){y:=<c>.P}" using prems 
+	by (simp add: subst_fresh abs_fresh fresh_atm)
+      finally 
+      have "(Cut <b>.ImpR (x).<a>.M b (z).ImpL <d>.N (u).Q z){y:=<c>.P} \<longrightarrow>\<^isub>a* 
+                     (Cut <a>.(Cut <d>.N  (x).M) (u).Q){y:=<c>.P}"
+	by simp
+    } 
+    moreover
+    { assume asm: "N=Ax y d"
+      have "(Cut <b>.ImpR (x).<a>.M b (z).ImpL <d>.N (u).Q z){y:=<c>.P} = 
+        Cut <b>.ImpR (x).<a>.(M{y:=<c>.P}) b (z).ImpL <d>.(N{y:=<c>.P}) (u).(Q{y:=<c>.P}) z" 
+	using prems by (simp add: subst_fresh abs_fresh fresh_atm fresh_prod)
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.(Cut <d>.(N{y:=<c>.P})  (x).(M{y:=<c>.P})) (u).(Q{y:=<c>.P})"
+	using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = Cut <a>.(Cut <d>.(Cut <c>.P (y).Ax y d)  (x).(M{y:=<c>.P})) (u).(Q{y:=<c>.P})"
+	using prems by simp
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.(Cut <d>.(P[c\<turnstile>c>d]) (x).(M{y:=<c>.P})) (u).(Q{y:=<c>.P})"
+      proof (cases "fic P c")
+	case True 
+	assume "fic P c"
+	then show ?thesis using prems
+	  apply -
+	  apply(rule a_starI)
+	  apply(rule better_CutL_intro)
+	  apply(rule a_Cut_l)
+	  apply(simp add: subst_fresh abs_fresh)
+	  apply(simp add: abs_fresh fresh_atm)
+	  apply(rule al_redu)
+	  apply(rule better_LAxR_intro)
+	  apply(simp)
+	  done
+      next
+	case False 
+	assume "\<not>fic P c" 
+	then show ?thesis using prems
+	  apply -
+	  apply(rule a_star_CutL)
+	  apply(rule a_star_CutL)
+	  apply(rule a_star_trans)
+	  apply(rule a_starI)
+	  apply(rule ac_redu)
+	  apply(rule better_left)
+	  apply(simp)
+	  apply(simp add: subst_with_ax2)
+	  done
+      qed
+      also have "\<dots> = (Cut <a>.(Cut <d>.N (x).M) (u).Q){y:=<c>.P}" using prems
+	apply -
+	apply(auto simp add: subst_fresh abs_fresh)
+	apply(simp add: trm.inject)
+	apply(simp add: alpha fresh_atm)
+	apply(simp add: trm.inject)
+	apply(simp add: alpha)
+	apply(rule sym)
+	apply(rule crename_swap)
+	apply(simp)
+	done
+      finally 
+      have "(Cut <b>.ImpR (x).<a>.M b (z).ImpL <d>.N (u).Q z){y:=<c>.P} \<longrightarrow>\<^isub>a* 
+	       (Cut <a>.(Cut <d>.N (x).M) (u).Q){y:=<c>.P}"
+	by simp
+    }
+    ultimately show ?thesis by blast
+  qed
+qed
+
+lemma l_redu_subst2:
+  assumes a: "M \<longrightarrow>\<^isub>l M'" 
+  shows "M{c:=(y).P} \<longrightarrow>\<^isub>a* M'{c:=(y).P}"
+using a
+proof(nominal_induct M M' avoiding: y c P rule: l_redu.strong_induct)
+  case LAxR
+  then show ?case
+    apply -
+    apply(rule aux3)
+    apply(rule better_Cut_substc)
+    apply(simp add: abs_fresh)
+    apply(simp add: abs_fresh)
+    apply(simp add: trm.inject fresh_atm)
+    apply(auto)
+    apply(rule aux4)
+    apply(rule sym)
+    apply(rule fic_substc_crename)
+    apply(simp_all)
+    apply(rule a_starI)
+    apply(rule al_redu)
+    apply(rule aux2)
+    apply(rule l_redu.intros)
+    apply(simp add: subst_fresh)
+    apply(simp add: fresh_atm)
+    apply(rule fic_subst1)
+    apply(simp_all)
+    apply(rule subst_comm')
+    apply(simp_all)
+    done
+next
+  case LAxL
+  then show ?case
+    apply -
+    apply(rule aux3)
+    apply(rule better_Cut_substc)
+    apply(simp)
+    apply(simp add: abs_fresh)
+    apply(simp add: fresh_atm)
+    apply(auto)
+    apply(rule aux4)
+    apply(simp add: trm.inject alpha calc_atm fresh_atm)
+    apply(rule a_star_trans)
+    apply(rule a_starI)
+    apply(rule al_redu)
+    apply(rule l_redu.intros)
+    apply(simp add: subst_fresh)
+    apply(simp add: fresh_atm)
+    apply(rule fin_subst2)
+    apply(simp_all)
+    apply(rule aux4)
+    apply(rule subst_comm')
+    apply(simp_all)
+    done
+next
+  case (LNot v M N u a b)
+  then show ?case
+  proof -
+    { assume asm: "M\<noteq>Ax u c"
+      have "(Cut <a>.NotR (u).M a (v).NotL <b>.N v){c:=(y).P} = 
+        (Cut <a>.NotR (u).(M{c:=(y).P}) a (v).NotL <b>.(N{c:=(y).P}) v)" using prems
+	by (simp add: subst_fresh abs_fresh fresh_atm)
+      also have "\<dots> \<longrightarrow>\<^isub>l (Cut <b>.(N{c:=(y).P}) (u).(M{c:=(y).P}))" using prems
+	by (auto intro: l_redu.intros simp add: subst_fresh)
+      also have "\<dots> = (Cut <b>.N (u).M){c:=(y).P}" using prems 
+	by (simp add: subst_fresh abs_fresh fresh_atm)
+      finally have ?thesis by auto
+    }
+    moreover
+    { assume asm: "M=Ax u c"
+      have "(Cut <a>.NotR (u).M a (v).NotL <b>.N v){c:=(y).P} = 
+        (Cut <a>.NotR (u).(M{c:=(y).P}) a (v).NotL <b>.(N{c:=(y).P}) v)" using prems
+	by (simp add: subst_fresh abs_fresh fresh_atm)
+      also have "\<dots> \<longrightarrow>\<^isub>a* (Cut <b>.(N{c:=(y).P}) (u).(M{c:=(y).P}))" using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = (Cut <b>.(N{c:=(y).P}) (u).(Cut <c>.(Ax u c) (y).P))" using prems
+	by simp
+      also have "\<dots> \<longrightarrow>\<^isub>a* (Cut <b>.(N{c:=(y).P})  (u).(P[y\<turnstile>n>u]))" 
+      proof (cases "fin P y")
+	case True 
+	assume "fin P y"
+	then show ?thesis using prems
+	  apply -
+	  apply(rule a_starI)
+	  apply(rule better_CutR_intro)
+	  apply(rule al_redu)
+	  apply(rule better_LAxL_intro)
+	  apply(simp)
+	  done
+      next
+	case False 
+	assume "\<not>fin P y" 
+	then show ?thesis
+	  apply -
+	  apply(rule a_star_CutR)
+	  apply(rule a_star_trans)
+	  apply(rule a_starI)
+	  apply(rule ac_redu)
+	  apply(rule better_right)
+	  apply(simp)
+	  apply(simp add: subst_with_ax1)
+	  done
+      qed
+      also have "\<dots> = (Cut <b>.N (u).M){c:=(y).P}" using prems
+	apply -
+	apply(auto simp add: subst_fresh abs_fresh)
+	apply(simp add: trm.inject)
+	apply(simp add: alpha fresh_atm)
+	apply(rule sym)
+	apply(rule nrename_swap)
+	apply(simp)
+	done
+      finally have "(Cut <a>.NotR (u).M a (v).NotL <b>.N v){c:=(y).P} \<longrightarrow>\<^isub>a* (Cut <b>.N (u).M){c:=(y).P}" 
+	by simp
+    }
+    ultimately show ?thesis by blast
+  qed
+next
+  case (LAnd1 b a1 M1 a2 M2 N z u)
+  then show ?case
+  proof -
+    { assume asm: "N\<noteq>Ax u c"
+      have "(Cut <b>.AndR <a1>.M1 <a2>.M2 b (z).AndL1 (u).N z){c:=(y).P} = 
+        Cut <b>.AndR <a1>.(M1{c:=(y).P}) <a2>.(M2{c:=(y).P}) b (z).AndL1 (u).(N{c:=(y).P}) z" 
+	using prems by (simp add: subst_fresh abs_fresh fresh_atm)
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a1>.(M1{c:=(y).P}) (u).(N{c:=(y).P})"
+	using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = (Cut <a1>.M1 (u).N){c:=(y).P}" using prems 
+	by (simp add: subst_fresh abs_fresh fresh_atm)
+      finally 
+      have "(Cut <b>.AndR <a1>.M1 <a2>.M2 b (z).AndL1 (u).N z){c:=(y).P} \<longrightarrow>\<^isub>a* (Cut <a1>.M1 (u).N){c:=(y).P}"
+	by simp
+    } 
+    moreover
+    { assume asm: "N=Ax u c"
+      have "(Cut <b>.AndR <a1>.M1 <a2>.M2 b (z).AndL1 (u).N z){c:=(y).P} = 
+        Cut <b>.AndR <a1>.(M1{c:=(y).P}) <a2>.(M2{c:=(y).P}) b (z).AndL1 (u).(N{c:=(y).P}) z" 
+	using prems by (simp add: subst_fresh abs_fresh fresh_atm)
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a1>.(M1{c:=(y).P}) (u).(N{c:=(y).P})"
+	using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = Cut <a1>.(M1{c:=(y).P}) (u).(Cut <c>.(Ax u c) (y).P)" 
+	using prems by simp
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a1>.(M1{c:=(y).P}) (u).(P[y\<turnstile>n>u])"
+      proof (cases "fin P y")
+	case True 
+	assume "fin P y"
+	then show ?thesis using prems
+	  apply -
+	  apply(rule a_starI)
+	  apply(rule better_CutR_intro)
+	  apply(rule al_redu)
+	  apply(rule better_LAxL_intro)
+	  apply(simp)
+	  done
+      next
+	case False 
+	assume "\<not>fin P y" 
+	then show ?thesis
+	  apply -
+	  apply(rule a_star_CutR)
+	  apply(rule a_star_trans)
+	  apply(rule a_starI)
+	  apply(rule ac_redu)
+	  apply(rule better_right)
+	  apply(simp)
+	  apply(simp add: subst_with_ax1)
+	  done
+      qed
+      also have "\<dots> = (Cut <a1>.M1 (u).N){c:=(y).P}" using prems
+	apply -
+	apply(auto simp add: subst_fresh abs_fresh)
+	apply(simp add: trm.inject)
+	apply(simp add: alpha fresh_atm)
+	apply(rule sym)
+	apply(rule nrename_swap)
+	apply(simp)
+	done
+      finally 
+      have "(Cut <b>.AndR <a1>.M1 <a2>.M2 b (z).AndL1 (u).N z){c:=(y).P} \<longrightarrow>\<^isub>a* (Cut <a1>.M1 (u).N){c:=(y).P}"
+	by simp
+    }
+    ultimately show ?thesis by blast
+  qed
+next
+  case (LAnd2 b a1 M1 a2 M2 N z u)
+  then show ?case
+  proof -
+    { assume asm: "N\<noteq>Ax u c"
+      have "(Cut <b>.AndR <a1>.M1 <a2>.M2 b (z).AndL2 (u).N z){c:=(y).P} = 
+        Cut <b>.AndR <a1>.(M1{c:=(y).P}) <a2>.(M2{c:=(y).P}) b (z).AndL2 (u).(N{c:=(y).P}) z" 
+	using prems by (simp add: subst_fresh abs_fresh fresh_atm)
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a2>.(M2{c:=(y).P}) (u).(N{c:=(y).P})"
+	using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = (Cut <a2>.M2 (u).N){c:=(y).P}" using prems 
+	by (simp add: subst_fresh abs_fresh fresh_atm)
+      finally 
+      have "(Cut <b>.AndR <a1>.M1 <a2>.M2 b (z).AndL2 (u).N z){c:=(y).P} \<longrightarrow>\<^isub>a* (Cut <a2>.M2 (u).N){c:=(y).P}"
+	by simp
+    } 
+    moreover
+    { assume asm: "N=Ax u c"
+      have "(Cut <b>.AndR <a1>.M1 <a2>.M2 b (z).AndL2 (u).N z){c:=(y).P} = 
+        Cut <b>.AndR <a1>.(M1{c:=(y).P}) <a2>.(M2{c:=(y).P}) b (z).AndL2 (u).(N{c:=(y).P}) z" 
+	using prems by (simp add: subst_fresh abs_fresh fresh_atm)
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a2>.(M2{c:=(y).P}) (u).(N{c:=(y).P})"
+	using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = Cut <a2>.(M2{c:=(y).P}) (u).(Cut <c>.(Ax u c) (y).P)" 
+	using prems by simp
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a2>.(M2{c:=(y).P}) (u).(P[y\<turnstile>n>u])"
+      proof (cases "fin P y")
+	case True 
+	assume "fin P y"
+	then show ?thesis using prems
+	  apply -
+	  apply(rule a_starI)
+	  apply(rule better_CutR_intro)
+	  apply(rule al_redu)
+	  apply(rule better_LAxL_intro)
+	  apply(simp)
+	  done
+      next
+	case False 
+	assume "\<not>fin P y" 
+	then show ?thesis
+	  apply -
+	  apply(rule a_star_CutR)
+	  apply(rule a_star_trans)
+	  apply(rule a_starI)
+	  apply(rule ac_redu)
+	  apply(rule better_right)
+	  apply(simp)
+	  apply(simp add: subst_with_ax1)
+	  done
+      qed
+      also have "\<dots> = (Cut <a2>.M2 (u).N){c:=(y).P}" using prems
+	apply -
+	apply(auto simp add: subst_fresh abs_fresh)
+	apply(simp add: trm.inject)
+	apply(simp add: alpha fresh_atm)
+	apply(rule sym)
+	apply(rule nrename_swap)
+	apply(simp)
+	done
+      finally 
+      have "(Cut <b>.AndR <a1>.M1 <a2>.M2 b (z).AndL2 (u).N z){c:=(y).P} \<longrightarrow>\<^isub>a* (Cut <a2>.M2 (u).N){c:=(y).P}"
+	by simp
+    }
+    ultimately show ?thesis by blast
+  qed
+next
+  case (LOr1 b a M N1 N2 z x1 x2 y c P)
+  then show ?case
+  proof -
+    { assume asm: "N1\<noteq>Ax x1 c"
+      have "(Cut <b>.OrR1 <a>.M b (z).OrL (x1).N1 (x2).N2 z){c:=(y).P} = 
+        Cut <b>.OrR1 <a>.(M{c:=(y).P}) b (z).OrL (x1).(N1{c:=(y).P}) (x2).(N2{c:=(y).P}) z" 
+	using prems by (simp add: subst_fresh abs_fresh fresh_atm)
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.(M{c:=(y).P}) (x1).(N1{c:=(y).P})"
+	using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = (Cut <a>.M (x1).N1){c:=(y).P}" using prems 
+	by (simp add: subst_fresh abs_fresh fresh_atm)
+      finally 
+      have "(Cut <b>.OrR1 <a>.M b (z).OrL (x1).N1 (x2).N2 z){c:=(y).P} \<longrightarrow>\<^isub>a* (Cut <a>.M (x1).N1){c:=(y).P}"
+	by simp
+    } 
+    moreover
+    { assume asm: "N1=Ax x1 c"
+      have "(Cut <b>.OrR1 <a>.M b (z).OrL (x1).N1 (x2).N2 z){c:=(y).P} = 
+        Cut <b>.OrR1 <a>.(M{c:=(y).P}) b (z).OrL (x1).(N1{c:=(y).P}) (x2).(N2{c:=(y).P}) z" 
+	using prems by (simp add: subst_fresh abs_fresh fresh_atm)
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.(M{c:=(y).P}) (x1).(N1{c:=(y).P})"
+	using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = Cut <a>.(M{c:=(y).P}) (x1).(Cut <c>.(Ax x1 c) (y).P)" 
+	using prems by simp
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.(M{c:=(y).P})   (x1).(P[y\<turnstile>n>x1])"
+      proof (cases "fin P y")
+	case True 
+	assume "fin P y"
+	then show ?thesis using prems
+	  apply -
+	  apply(rule a_starI)
+	  apply(rule better_CutR_intro)
+	  apply(rule al_redu)
+	  apply(rule better_LAxL_intro)
+	  apply(simp)
+	  done
+      next
+	case False 
+	assume "\<not>fin P y" 
+	then show ?thesis
+	  apply -
+	  apply(rule a_star_CutR)
+	  apply(rule a_star_trans)
+	  apply(rule a_starI)
+	  apply(rule ac_redu)
+	  apply(rule better_right)
+	  apply(simp)
+	  apply(simp add: subst_with_ax1)
+	  done
+      qed
+      also have "\<dots> = (Cut <a>.M (x1).N1){c:=(y).P}" using prems
+	apply -
+	apply(auto simp add: subst_fresh abs_fresh)
+	apply(simp add: trm.inject)
+	apply(simp add: alpha fresh_atm)
+	apply(rule sym)
+	apply(rule nrename_swap)
+	apply(simp)
+	done
+      finally 
+      have "(Cut <b>.OrR1 <a>.M b (z).OrL (x1).N1 (x2).N2 z){c:=(y).P} \<longrightarrow>\<^isub>a* (Cut <a>.M (x1).N1){c:=(y).P}"
+	by simp
+    }
+    ultimately show ?thesis by blast
+  qed
+next
+  case (LOr2 b a M N1 N2 z x1 x2 y c P)
+  then show ?case
+  proof -
+    { assume asm: "N2\<noteq>Ax x2 c"
+      have "(Cut <b>.OrR2 <a>.M b (z).OrL (x1).N1 (x2).N2 z){c:=(y).P} = 
+        Cut <b>.OrR2 <a>.(M{c:=(y).P}) b (z).OrL (x1).(N1{c:=(y).P}) (x2).(N2{c:=(y).P}) z" 
+	using prems by (simp add: subst_fresh abs_fresh fresh_atm)
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.(M{c:=(y).P}) (x2).(N2{c:=(y).P})"
+	using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = (Cut <a>.M (x2).N2){c:=(y).P}" using prems 
+	by (simp add: subst_fresh abs_fresh fresh_atm)
+      finally 
+      have "(Cut <b>.OrR2 <a>.M b (z).OrL (x1).N1 (x2).N2 z){c:=(y).P} \<longrightarrow>\<^isub>a* (Cut <a>.M (x2).N2){c:=(y).P}"
+	by simp
+    } 
+    moreover
+    { assume asm: "N2=Ax x2 c"
+      have "(Cut <b>.OrR2 <a>.M b (z).OrL (x1).N1 (x2).N2 z){c:=(y).P} = 
+        Cut <b>.OrR2 <a>.(M{c:=(y).P}) b (z).OrL (x1).(N1{c:=(y).P}) (x2).(N2{c:=(y).P}) z" 
+	using prems by (simp add: subst_fresh abs_fresh fresh_atm)
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.(M{c:=(y).P}) (x2).(N2{c:=(y).P})"
+	using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = Cut <a>.(M{c:=(y).P}) (x2).(Cut <c>.(Ax x2 c) (y).P)" 
+	using prems by simp
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.(M{c:=(y).P}) (x2).(P[y\<turnstile>n>x2])"
+      proof (cases "fin P y")
+	case True 
+	assume "fin P y"
+	then show ?thesis using prems
+	  apply -
+	  apply(rule a_starI)
+	  apply(rule better_CutR_intro)
+	  apply(rule al_redu)
+	  apply(rule better_LAxL_intro)
+	  apply(simp)
+	  done
+      next
+	case False 
+	assume "\<not>fin P y" 
+	then show ?thesis
+	  apply -
+	  apply(rule a_star_CutR)
+	  apply(rule a_star_trans)
+	  apply(rule a_starI)
+	  apply(rule ac_redu)
+	  apply(rule better_right)
+	  apply(simp)
+	  apply(simp add: subst_with_ax1)
+	  done
+      qed
+      also have "\<dots> = (Cut <a>.M (x2).N2){c:=(y).P}" using prems
+	apply -
+	apply(auto simp add: subst_fresh abs_fresh)
+	apply(simp add: trm.inject)
+	apply(simp add: alpha fresh_atm)
+	apply(rule sym)
+	apply(rule nrename_swap)
+	apply(simp)
+	done
+      finally 
+      have "(Cut <b>.OrR2 <a>.M b (z).OrL (x1).N1 (x2).N2 z){c:=(y).P} \<longrightarrow>\<^isub>a* (Cut <a>.M (x2).N2){c:=(y).P}"
+	by simp
+    }
+    ultimately show ?thesis by blast
+  qed
+next
+  case (LImp z N u Q x M b a d y c P)
+  then show ?case
+  proof -
+    { assume asm: "M\<noteq>Ax x c \<and> Q\<noteq>Ax u c"
+      have "(Cut <b>.ImpR (x).<a>.M b (z).ImpL <d>.N (u).Q z){c:=(y).P} = 
+        Cut <b>.ImpR (x).<a>.(M{c:=(y).P}) b (z).ImpL <d>.(N{c:=(y).P}) (u).(Q{c:=(y).P}) z" 
+	using prems by (simp add: fresh_prod abs_fresh fresh_atm)
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.(Cut <d>.(N{c:=(y).P})  (x).(M{c:=(y).P})) (u).(Q{c:=(y).P})"
+	using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = (Cut <a>.(Cut <d>.N  (x).M) (u).Q){c:=(y).P}" using prems 
+	by (simp add: subst_fresh abs_fresh fresh_atm)
+      finally 
+      have "(Cut <b>.ImpR (x).<a>.M b (z).ImpL <d>.N (u).Q z){c:=(y).P} \<longrightarrow>\<^isub>a* 
+                     (Cut <a>.(Cut <d>.N  (x).M) (u).Q){c:=(y).P}"
+	by simp
+    } 
+    moreover
+    { assume asm: "M=Ax x c \<and> Q\<noteq>Ax u c"
+      have "(Cut <b>.ImpR (x).<a>.M b (z).ImpL <d>.N (u).Q z){c:=(y).P} = 
+        Cut <b>.ImpR (x).<a>.(M{c:=(y).P}) b (z).ImpL <d>.(N{c:=(y).P}) (u).(Q{c:=(y).P}) z" 
+	using prems by (simp add: subst_fresh abs_fresh fresh_atm fresh_prod)
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.(Cut <d>.(N{c:=(y).P})  (x).(M{c:=(y).P})) (u).(Q{c:=(y).P})"
+	using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = Cut <a>.(Cut <d>.(N{c:=(y).P})  (x).(Cut <c>.Ax x c (y).P)) (u).(Q{c:=(y).P})"
+	using prems by simp
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.(Cut <d>.(N{c:=(y).P})  (x).(P[y\<turnstile>n>x])) (u).(Q{c:=(y).P})"
+      proof (cases "fin P y")
+	case True 
+	assume "fin P y"
+	then show ?thesis using prems
+	  apply -
+	  apply(rule a_star_CutL)
+	  apply(rule a_star_CutR)
+	  apply(rule a_star_trans)
+	  apply(rule a_starI)
+	  apply(rule al_redu)
+	  apply(rule better_LAxL_intro)
+	  apply(simp)
+	  apply(simp)
+	  done
+      next
+	case False 
+	assume "\<not>fin P y" 
+	then show ?thesis using prems
+	  apply -
+	  apply(rule a_star_CutL)
+	  apply(rule a_star_CutR)
+	  apply(rule a_star_trans)
+	  apply(rule a_starI)
+	  apply(rule ac_redu)
+	  apply(rule better_right)
+	  apply(simp)
+	  apply(simp add: subst_with_ax1)
+	  done
+      qed
+      also have "\<dots> = (Cut <a>.(Cut <d>.N (x).M) (u).Q){c:=(y).P}" using prems
+	apply -
+	apply(auto simp add: subst_fresh abs_fresh)
+	apply(simp add: trm.inject)
+	apply(simp add: alpha fresh_atm)
+	apply(simp add: trm.inject)
+	apply(simp add: alpha)
+	apply(simp add: nrename_swap)
+	done
+      finally 
+      have "(Cut <b>.ImpR (x).<a>.M b (z).ImpL <d>.N (u).Q z){c:=(y).P} \<longrightarrow>\<^isub>a* 
+	       (Cut <a>.(Cut <d>.N (x).M) (u).Q){c:=(y).P}"
+	by simp
+    }
+     moreover
+    { assume asm: "M\<noteq>Ax x c \<and> Q=Ax u c"
+      have "(Cut <b>.ImpR (x).<a>.M b (z).ImpL <d>.N (u).Q z){c:=(y).P} = 
+        Cut <b>.ImpR (x).<a>.(M{c:=(y).P}) b (z).ImpL <d>.(N{c:=(y).P}) (u).(Q{c:=(y).P}) z" 
+	using prems by (simp add: subst_fresh abs_fresh fresh_atm fresh_prod)
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.(Cut <d>.(N{c:=(y).P})  (x).(M{c:=(y).P})) (u).(Q{c:=(y).P})"
+	using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = Cut <a>.(Cut <d>.(N{c:=(y).P})  (x).(M{c:=(y).P})) (u).(Cut <c>.Ax u c (y).P)"
+	using prems by simp
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.(Cut <d>.(N{c:=(y).P})  (x).(M{c:=(y).P})) (u).(P[y\<turnstile>n>u])"
+      proof (cases "fin P y")
+	case True 
+	assume "fin P y"
+	then show ?thesis using prems
+	  apply -
+	  apply(rule a_star_CutR)
+	  apply(rule a_starI)
+	  apply(rule al_redu)
+	  apply(rule better_LAxL_intro)
+	  apply(simp)
+	  done
+      next
+	case False 
+	assume "\<not>fin P y" 
+	then show ?thesis using prems
+	  apply -
+	  apply(rule a_star_CutR)
+	  apply(rule a_star_trans)
+	  apply(rule a_starI)
+	  apply(rule ac_redu)
+	  apply(rule better_right)
+	  apply(simp)
+	  apply(simp add: subst_with_ax1)
+	  done
+      qed
+      also have "\<dots> = (Cut <a>.(Cut <d>.N (x).M) (u).Q){c:=(y).P}" using prems
+	apply -
+	apply(auto simp add: subst_fresh abs_fresh)
+	apply(simp add: trm.inject)
+	apply(simp add: alpha fresh_atm)
+	apply(simp add: nrename_swap)
+	done
+      finally 
+      have "(Cut <b>.ImpR (x).<a>.M b (z).ImpL <d>.N (u).Q z){c:=(y).P} \<longrightarrow>\<^isub>a* 
+	       (Cut <a>.(Cut <d>.N (x).M) (u).Q){c:=(y).P}"
+	by simp
+    }
+     moreover
+    { assume asm: "M=Ax x c \<and> Q=Ax u c"
+      have "(Cut <b>.ImpR (x).<a>.M b (z).ImpL <d>.N (u).Q z){c:=(y).P} = 
+        Cut <b>.ImpR (x).<a>.(M{c:=(y).P}) b (z).ImpL <d>.(N{c:=(y).P}) (u).(Q{c:=(y).P}) z" 
+	using prems by (simp add: subst_fresh abs_fresh fresh_atm fresh_prod)
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.(Cut <d>.(N{c:=(y).P})  (x).(M{c:=(y).P})) (u).(Q{c:=(y).P})"
+	using prems
+	apply -
+	apply(rule a_starI)
+	apply(rule al_redu)
+	apply(auto intro: l_redu.intros simp add: subst_fresh abs_fresh)
+	done
+      also have "\<dots> = Cut <a>.(Cut <d>.(N{c:=(y).P})  (x).(Cut <c>.Ax x c (y).P)) (u).(Cut <c>.Ax u c (y).P)"
+	using prems by simp
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.(Cut <d>.(N{c:=(y).P})  (x).(Cut <c>.Ax x c (y).P)) (u).(P[y\<turnstile>n>u])"
+      proof (cases "fin P y")
+	case True 
+	assume "fin P y"
+	then show ?thesis using prems
+	  apply -
+	  apply(rule a_star_CutR)
+	  apply(rule a_starI)
+	  apply(rule al_redu)
+	  apply(rule better_LAxL_intro)
+	  apply(simp)
+	  done
+      next
+	case False 
+	assume "\<not>fin P y" 
+	then show ?thesis using prems
+	  apply -
+	  apply(rule a_star_CutR)
+	  apply(rule a_star_trans)
+	  apply(rule a_starI)
+	  apply(rule ac_redu)
+	  apply(rule better_right)
+	  apply(simp)
+	  apply(simp add: subst_with_ax1)
+	  done
+      qed
+      also have "\<dots> \<longrightarrow>\<^isub>a* Cut <a>.(Cut <d>.(N{c:=(y).P})  (x).(P[y\<turnstile>n>x])) (u).(P[y\<turnstile>n>u])"
+      proof (cases "fin P y")
+	case True 
+	assume "fin P y"
+	then show ?thesis using prems
+	  apply -
+	  apply(rule a_star_CutL)
+	  apply(rule a_star_CutR)
+	  apply(rule a_starI)
+	  apply(rule al_redu)
+	  apply(rule better_LAxL_intro)
+	  apply(simp)
+	  done
+      next
+	case False 
+	assume "\<not>fin P y" 
+	then show ?thesis using prems
+	  apply -
+	  apply(rule a_star_CutL)
+	  apply(rule a_star_CutR)
+	  apply(rule a_star_trans)
+	  apply(rule a_starI)
+	  apply(rule ac_redu)
+	  apply(rule better_right)
+	  apply(simp)
+	  apply(simp add: subst_with_ax1)
+	  done
+      qed
+      also have "\<dots> = (Cut <a>.(Cut <d>.N (x).M) (u).Q){c:=(y).P}" using prems
+	apply -
+	apply(auto simp add: subst_fresh abs_fresh)
+	apply(simp add: trm.inject)
+	apply(rule conjI)
+	apply(simp add: alpha fresh_atm trm.inject)
+	apply(simp add: nrename_swap)
+	apply(simp add: alpha fresh_atm trm.inject)
+	apply(simp add: nrename_swap)
+	done
+      finally 
+      have "(Cut <b>.ImpR (x).<a>.M b (z).ImpL <d>.N (u).Q z){c:=(y).P} \<longrightarrow>\<^isub>a* 
+	       (Cut <a>.(Cut <d>.N (x).M) (u).Q){c:=(y).P}"
+	by simp
+    }
+    ultimately show ?thesis by blast
+  qed
+qed
+
+lemma a_redu_subst1:
+  assumes a: "M \<longrightarrow>\<^isub>a M'"
+  shows "M{y:=<c>.P} \<longrightarrow>\<^isub>a* M'{y:=<c>.P}"
+using a
+proof(nominal_induct avoiding: y c P rule: a_redu.strong_induct)
+  case al_redu
+  then show ?case by (simp only: l_redu_subst1)
+next
+  case ac_redu
+  then show ?case
+    apply -
+    apply(rule a_starI)
+    apply(rule a_redu.ac_redu)
+    apply(simp only: c_redu_subst1')
+    done
+next
+  case (a_Cut_l a N x M M' y c P)
+  then show ?case
+    apply(simp add: subst_fresh fresh_a_redu)
+    apply(rule conjI)
+    apply(rule impI)+
+    apply(simp)
+    apply(drule ax_do_not_a_reduce)
+    apply(simp)
+    apply(rule impI)
+    apply(rule conjI)
+    apply(rule impI)
+    apply(simp)
+    apply(drule_tac x="y" in meta_spec)
+    apply(drule_tac x="c" in meta_spec)
+    apply(drule_tac x="P" in meta_spec)
+    apply(simp)
+    apply(rule a_star_trans)
+    apply(rule a_star_CutL)
+    apply(assumption)
+    apply(rule a_star_trans)
+    apply(rule_tac M'="P[c\<turnstile>c>a]" in a_star_CutL)
+    apply(case_tac "fic P c")
+    apply(rule a_starI)
+    apply(rule al_redu)
+    apply(rule better_LAxR_intro)
+    apply(simp)
+    apply(rule a_star_trans)
+    apply(rule a_starI)
+    apply(rule ac_redu)
+    apply(rule better_left)
+    apply(simp)
+    apply(rule subst_with_ax2)
+    apply(rule aux4)
+    apply(simp add: trm.inject)
+    apply(simp add: alpha fresh_atm)
+    apply(simp add: crename_swap)
+    apply(rule impI)
+    apply(rule a_star_CutL)
+    apply(auto)
+    done
+next
+  case (a_Cut_r a N x M M' y c P)
+  then show ?case
+    apply(auto simp add: subst_fresh fresh_a_redu)
+    apply(rule a_star_CutR)
+    apply(auto)[1]
+    apply(rule a_star_CutR)
+    apply(auto)[1]
+    done
+next
+  case a_NotL
+  then show ?case 
+    apply(auto)
+    apply(generate_fresh "name")
+    apply(fresh_fun_simp)
+    apply(fresh_fun_simp)
+    apply(simp add: subst_fresh)
+    apply(rule a_star_CutR)
+    apply(rule a_star_NotL)
+    apply(auto)[1]
+    apply(rule a_star_NotL)
+    apply(auto)[1]
+    done
+next
+  case a_NotR
+  then show ?case 
+    apply(auto)
+    apply(rule a_star_NotR)
+    apply(auto)[1]
+    done
+next
+  case a_AndR_l
+  then show ?case
+    apply(auto simp add: subst_fresh fresh_a_redu)
+    apply(rule a_star_AndR)
+    apply(auto)
+    done
+next
+  case a_AndR_r
+  then show ?case
+    apply(auto simp add: subst_fresh fresh_a_redu)
+    apply(rule a_star_AndR)
+    apply(auto)
+    done
+next
+  case a_AndL1
+  then show ?case 
+    apply(auto)
+    apply(generate_fresh "name")
+    apply(fresh_fun_simp)
+    apply(fresh_fun_simp)
+    apply(simp add: subst_fresh)
+    apply(rule a_star_CutR)
+    apply(rule a_star_AndL1)
+    apply(auto)[1]
+    apply(rule a_star_AndL1)
+    apply(auto)[1]
+    done
+next
+  case a_AndL2
+  then show ?case 
+    apply(auto)
+    apply(generate_fresh "name")
+    apply(fresh_fun_simp)
+    apply(fresh_fun_simp)
+    apply(simp add: subst_fresh)
+    apply(rule a_star_CutR)
+    apply(rule a_star_AndL2)
+    apply(auto)[1]
+    apply(rule a_star_AndL2)
+    apply(auto)[1]
+    done
+next
+  case a_OrR1
+  then show ?case
+    apply(auto simp add: subst_fresh fresh_a_redu)
+    apply(rule a_star_OrR1)
+    apply(auto)
+    done
+next
+  case a_OrR2
+  then show ?case
+    apply(auto simp add: subst_fresh fresh_a_redu)
+    apply(rule a_star_OrR2)
+    apply(auto)
+    done
+next
+  case a_OrL_l
+  then show ?case 
+    apply(auto simp add: subst_fresh fresh_a_redu)
+    apply(generate_fresh "name")
+    apply(fresh_fun_simp)
+    apply(fresh_fun_simp)
+    apply(simp add: subst_fresh)
+    apply(rule a_star_CutR)
+    apply(rule a_star_OrL)
+    apply(auto)
+    apply(rule a_star_OrL)
+    apply(auto)
+    done
+next
+  case a_OrL_r
+  then show ?case 
+    apply(auto simp add: subst_fresh fresh_a_redu)
+    apply(generate_fresh "name")
+    apply(fresh_fun_simp)
+    apply(fresh_fun_simp)
+    apply(simp add: subst_fresh)
+    apply(rule a_star_CutR)
+    apply(rule a_star_OrL)
+    apply(auto)
+    apply(rule a_star_OrL)
+    apply(auto)
+    done
+next
+  case a_ImpR
+  then show ?case
+    apply(auto simp add: subst_fresh fresh_a_redu)
+    apply(rule a_star_ImpR)
+    apply(auto)
+    done
+next
+  case a_ImpL_r
+  then show ?case 
+    apply(auto simp add: subst_fresh fresh_a_redu)
+    apply(generate_fresh "name")
+    apply(fresh_fun_simp)
+    apply(fresh_fun_simp)
+    apply(simp add: subst_fresh)
+    apply(rule a_star_CutR)
+    apply(rule a_star_ImpL)
+    apply(auto)
+    apply(rule a_star_ImpL)
+    apply(auto)
+    done
+next
+  case a_ImpL_l
+  then show ?case 
+    apply(auto simp add: subst_fresh fresh_a_redu)
+    apply(generate_fresh "name")
+    apply(fresh_fun_simp)
+    apply(fresh_fun_simp)
+    apply(simp add: subst_fresh)
+    apply(rule a_star_CutR)
+    apply(rule a_star_ImpL)
+    apply(auto)
+    apply(rule a_star_ImpL)
+    apply(auto)
+    done
+qed
+
+lemma a_redu_subst2:
+  assumes a: "M \<longrightarrow>\<^isub>a M'"
+  shows "M{c:=(y).P} \<longrightarrow>\<^isub>a* M'{c:=(y).P}"
+using a
+proof(nominal_induct avoiding: y c P rule: a_redu.strong_induct)
+  case al_redu
+  then show ?case by (simp only: l_redu_subst2)
+next
+  case ac_redu
+  then show ?case
+    apply -
+    apply(rule a_starI)
+    apply(rule a_redu.ac_redu)
+    apply(simp only: c_redu_subst2')
+    done
+next
+  case (a_Cut_r a N x M M' y c P)
+  then show ?case
+    apply(simp add: subst_fresh fresh_a_redu)
+    apply(rule conjI)
+    apply(rule impI)+
+    apply(simp)
+    apply(drule ax_do_not_a_reduce)
+    apply(simp)
+    apply(rule impI)
+    apply(rule conjI)
+    apply(rule impI)
+    apply(simp)
+    apply(drule_tac x="c" in meta_spec)
+    apply(drule_tac x="y" in meta_spec)
+    apply(drule_tac x="P" in meta_spec)
+    apply(simp)
+    apply(rule a_star_trans)
+    apply(rule a_star_CutR)
+    apply(assumption)
+    apply(rule a_star_trans)
+    apply(rule_tac N'="P[y\<turnstile>n>x]" in a_star_CutR)
+    apply(case_tac "fin P y")
+    apply(rule a_starI)
+    apply(rule al_redu)
+    apply(rule better_LAxL_intro)
+    apply(simp)
+    apply(rule a_star_trans)
+    apply(rule a_starI)
+    apply(rule ac_redu)
+    apply(rule better_right)
+    apply(simp)
+    apply(rule subst_with_ax1)
+    apply(rule aux4)
+    apply(simp add: trm.inject)
+    apply(simp add: alpha fresh_atm)
+    apply(simp add: nrename_swap)
+    apply(rule impI)
+    apply(rule a_star_CutR)
+    apply(auto)
+    done
+next
+  case (a_Cut_l a N x M M' y c P)
+  then show ?case
+    apply(auto simp add: subst_fresh fresh_a_redu)
+    apply(rule a_star_CutL)
+    apply(auto)[1]
+    apply(rule a_star_CutL)
+    apply(auto)[1]
+    done
+next
+  case a_NotR
+  then show ?case 
+    apply(auto)
+    apply(generate_fresh "coname")
+    apply(fresh_fun_simp)
+    apply(fresh_fun_simp)
+    apply(simp add: subst_fresh)
+    apply(rule a_star_CutL)
+    apply(rule a_star_NotR)
+    apply(auto)[1]
+    apply(rule a_star_NotR)
+    apply(auto)[1]
+    done
+next
+  case a_NotL
+  then show ?case 
+    apply(auto)
+    apply(rule a_star_NotL)
+    apply(auto)[1]
+    done
+next
+  case a_AndR_l
+  then show ?case
+    apply(auto simp add: subst_fresh fresh_a_redu)
+    apply(generate_fresh "coname")
+    apply(fresh_fun_simp)
+    apply(fresh_fun_simp)
+    apply(simp add: subst_fresh)
+    apply(rule a_star_CutL)
+    apply(rule a_star_AndR)
+    apply(auto)
+    apply(rule a_star_AndR)
+    apply(auto)
+    done
+next
+  case a_AndR_r
+  then show ?case
+    apply(auto simp add: subst_fresh fresh_a_redu)
+    apply(generate_fresh "coname")
+    apply(fresh_fun_simp)
+    apply(fresh_fun_simp)
+    apply(simp add: subst_fresh)
+    apply(rule a_star_CutL)
+    apply(rule a_star_AndR)
+    apply(auto)
+    apply(rule a_star_AndR)
+    apply(auto)
+    done
+next
+  case a_AndL1
+  then show ?case
+    apply(auto simp add: subst_fresh fresh_a_redu)
+    apply(rule a_star_AndL1)
+    apply(auto)
+    done
+next
+  case a_AndL2
+  then show ?case
+    apply(auto simp add: subst_fresh fresh_a_redu)
+    apply(rule a_star_AndL2)
+    apply(auto)
+    done
+next
+  case a_OrR1
+  then show ?case 
+    apply(auto)
+    apply(generate_fresh "coname")
+    apply(fresh_fun_simp)
+    apply(fresh_fun_simp)
+    apply(simp add: subst_fresh)
+    apply(rule a_star_CutL)
+    apply(rule a_star_OrR1)
+    apply(auto)[1]
+    apply(rule a_star_OrR1)
+    apply(auto)[1]
+    done
+next
+  case a_OrR2
+  then show ?case 
+    apply(auto)
+    apply(generate_fresh "coname")
+    apply(fresh_fun_simp)
+    apply(fresh_fun_simp)
+    apply(simp add: subst_fresh)
+    apply(rule a_star_CutL)
+    apply(rule a_star_OrR2)
+    apply(auto)[1]
+    apply(rule a_star_OrR2)
+    apply(auto)[1]
+    done
+next
+  case a_OrL_l
+  then show ?case
+    apply(auto simp add: subst_fresh fresh_a_redu)
+    apply(rule a_star_OrL)
+    apply(auto)
+    done
+next
+  case a_OrL_r
+  then show ?case
+    apply(auto simp add: subst_fresh fresh_a_redu)
+    apply(rule a_star_OrL)
+    apply(auto)
+    done
+next
+  case a_ImpR
+  then show ?case 
+    apply(auto simp add: subst_fresh fresh_a_redu)
+    apply(generate_fresh "coname")
+    apply(fresh_fun_simp)
+    apply(fresh_fun_simp)
+    apply(simp add: subst_fresh)
+    apply(rule a_star_CutL)
+    apply(rule a_star_ImpR)
+    apply(auto)
+    apply(rule a_star_ImpR)
+    apply(auto)
+    done
+next
+  case a_ImpL_l
+  then show ?case
+    apply(auto simp add: subst_fresh fresh_a_redu)
+    apply(rule a_star_ImpL)
+    apply(auto)
+    done
+next
+  case a_ImpL_r
+  then show ?case
+    apply(auto simp add: subst_fresh fresh_a_redu)
+    apply(rule a_star_ImpL)
+    apply(auto)
+    done
+qed
+
+lemma a_star_subst1:
+  assumes a: "M \<longrightarrow>\<^isub>a* M'"
+  shows "M{y:=<c>.P} \<longrightarrow>\<^isub>a* M'{y:=<c>.P}"
+using a
+apply(induct)
+apply(blast)
+apply(drule_tac y="y" and c="c" and P="P" in a_redu_subst1)
+apply(auto)
+done
+
+lemma a_star_subst2:
+  assumes a: "M \<longrightarrow>\<^isub>a* M'"
+  shows "M{c:=(y).P} \<longrightarrow>\<^isub>a* M'{c:=(y).P}"
+using a
+apply(induct)
+apply(blast)
+apply(drule_tac y="y" and c="c" and P="P" in a_redu_subst2)
+apply(auto)
+done
+
+text {* Candidates and SN *}
+
+text {* SNa *}
+
+inductive2 
+  SNa :: "trm \<Rightarrow> bool"
+where
+  SNaI: "(\<And>M'. M \<longrightarrow>\<^isub>a M' \<Longrightarrow> SNa M') \<Longrightarrow> SNa M"
+
+lemma SNa_induct[consumes 1]:
+  assumes major: "SNa M"
+  assumes hyp: "\<And>M'. SNa M' \<Longrightarrow> (\<forall>M''. M'\<longrightarrow>\<^isub>a M'' \<longrightarrow> P M'' \<Longrightarrow> P M')"
+  shows "P M"
+  apply (rule major[THEN SNa.induct])
+  apply (rule hyp)
+  apply (rule SNaI)
+  apply (blast)+
+  done
+
+
+lemma double_SNa_aux:
+  assumes a_SNa: "SNa a"
+  and b_SNa: "SNa b"
+  and hyp: "\<And>x z.
+    (\<And>y. x\<longrightarrow>\<^isub>a y \<Longrightarrow> SNa y) \<Longrightarrow>
+    (\<And>y. x\<longrightarrow>\<^isub>a y \<Longrightarrow> P y z) \<Longrightarrow>
+    (\<And>u. z\<longrightarrow>\<^isub>a u \<Longrightarrow> SNa u) \<Longrightarrow>
+    (\<And>u. z\<longrightarrow>\<^isub>a u \<Longrightarrow> P x u) \<Longrightarrow> P x z"
+  shows "P a b"
+proof -
+  from a_SNa
+  have r: "\<And>b. SNa b \<Longrightarrow> P a b"
+  proof (induct a rule: SNa.induct)
+    case (SNaI x)
+    note SNa' = this
+    have "SNa b" .
+    thus ?case
+    proof (induct b rule: SNa.induct)
+      case (SNaI y)
+      show ?case
+	apply (rule hyp)
+	apply (erule SNa')
+	apply (erule SNa')
+	apply (rule SNa.SNaI)
+	apply (erule SNaI)+
+	done
+    qed
+  qed
+  from b_SNa show ?thesis by (rule r)
+qed
+
+lemma double_SNa:
+  "\<lbrakk>SNa a; SNa b; \<forall>x z. ((\<forall>y. x\<longrightarrow>\<^isub>ay \<longrightarrow> P y z) \<and> (\<forall>u. z\<longrightarrow>\<^isub>a u \<longrightarrow> P x u)) \<longrightarrow> P x z\<rbrakk> \<Longrightarrow> P a b"
+apply(rule_tac double_SNa_aux)
+apply(assumption)+
+apply(blast)
+done
+
+lemma a_preserves_SNa:
+  assumes a: "SNa M" "M\<longrightarrow>\<^isub>a M'"
+  shows "SNa M'"
+using a 
+by (erule_tac SNa.cases) (simp)
+
+lemma a_star_preserves_SNa:
+  assumes a: "SNa M" and b: "M\<longrightarrow>\<^isub>a* M'"
+  shows "SNa M'"
+using b a
+by (induct) (auto simp add: a_preserves_SNa)
+
+lemma Ax_in_SNa:
+  shows "SNa (Ax x a)"
+apply(rule SNaI)
+apply(erule a_redu.cases, auto)
+apply(erule l_redu.cases, auto)
+apply(erule c_redu.cases, auto)
+done
+
+lemma NotL_in_SNa:
+  assumes a: "SNa M"
+  shows "SNa (NotL <a>.M x)"
+using a
+apply(induct)
+apply(rule SNaI)
+apply(erule a_redu.cases, auto)
+apply(erule l_redu.cases, auto)
+apply(erule c_redu.cases, auto)
+apply(auto simp add: trm.inject alpha)
+apply(rotate_tac 1)
+apply(drule_tac x="[(a,aa)]\<bullet>M'a" in meta_spec)
+apply(simp add: a_redu.eqvt)
+apply(subgoal_tac "NotL <a>.([(a,aa)]\<bullet>M'a) x = NotL <aa>.M'a x")
+apply(simp)
+apply(simp add: trm.inject alpha fresh_a_redu)
+done
+
+lemma NotR_in_SNa:
+  assumes a: "SNa M"
+  shows "SNa (NotR (x).M a)"
+using a
+apply(induct)
+apply(rule SNaI)
+apply(erule a_redu.cases, auto)
+apply(erule l_redu.cases, auto)
+apply(erule c_redu.cases, auto)
+apply(auto simp add: trm.inject alpha)
+apply(rotate_tac 1)
+apply(drule_tac x="[(x,xa)]\<bullet>M'a" in meta_spec)
+apply(simp add: a_redu.eqvt)
+apply(rule_tac s="NotR (x).([(x,xa)]\<bullet>M'a) a" in subst)
+apply(simp add: trm.inject alpha fresh_a_redu)
+apply(simp)
+done
+
+lemma AndL1_in_SNa:
+  assumes a: "SNa M"
+  shows "SNa (AndL1 (x).M y)"
+using a
+apply(induct)
+apply(rule SNaI)
+apply(erule a_redu.cases, auto)
+apply(erule l_redu.cases, auto)
+apply(erule c_redu.cases, auto)
+apply(auto simp add: trm.inject alpha)
+apply(rotate_tac 1)
+apply(drule_tac x="[(x,xa)]\<bullet>M'a" in meta_spec)
+apply(simp add: a_redu.eqvt)
+apply(rule_tac s="AndL1 x.([(x,xa)]\<bullet>M'a) y" in subst)
+apply(simp add: trm.inject alpha fresh_a_redu)
+apply(simp)
+done
+
+lemma AndL2_in_SNa:
+  assumes a: "SNa M"
+  shows "SNa (AndL2 (x).M y)"
+using a
+apply(induct)
+apply(rule SNaI)
+apply(erule a_redu.cases, auto)
+apply(erule l_redu.cases, auto)
+apply(erule c_redu.cases, auto)
+apply(auto simp add: trm.inject alpha)
+apply(rotate_tac 1)
+apply(drule_tac x="[(x,xa)]\<bullet>M'a" in meta_spec)
+apply(simp add: a_redu.eqvt)
+apply(rule_tac s="AndL2 x.([(x,xa)]\<bullet>M'a) y" in subst)
+apply(simp add: trm.inject alpha fresh_a_redu)
+apply(simp)
+done
+
+lemma OrR1_in_SNa:
+  assumes a: "SNa M"
+  shows "SNa (OrR1 <a>.M b)"
+using a
+apply(induct)
+apply(rule SNaI)
+apply(erule a_redu.cases, auto)
+apply(erule l_redu.cases, auto)
+apply(erule c_redu.cases, auto)
+apply(auto simp add: trm.inject alpha)
+apply(rotate_tac 1)
+apply(drule_tac x="[(a,aa)]\<bullet>M'a" in meta_spec)
+apply(simp add: a_redu.eqvt)
+apply(rule_tac s="OrR1 <a>.([(a,aa)]\<bullet>M'a) b" in subst)
+apply(simp add: trm.inject alpha fresh_a_redu)
+apply(simp)
+done
+
+lemma OrR2_in_SNa:
+  assumes a: "SNa M"
+  shows "SNa (OrR2 <a>.M b)"
+using a
+apply(induct)
+apply(rule SNaI)
+apply(erule a_redu.cases, auto)
+apply(erule l_redu.cases, auto)
+apply(erule c_redu.cases, auto)
+apply(auto simp add: trm.inject alpha)
+apply(rotate_tac 1)
+apply(drule_tac x="[(a,aa)]\<bullet>M'a" in meta_spec)
+apply(simp add: a_redu.eqvt)
+apply(rule_tac s="OrR2 <a>.([(a,aa)]\<bullet>M'a) b" in subst)
+apply(simp add: trm.inject alpha fresh_a_redu)
+apply(simp)
+done
+
+lemma ImpR_in_SNa:
+  assumes a: "SNa M"
+  shows "SNa (ImpR (x).<a>.M b)"
+using a
+apply(induct)
+apply(rule SNaI)
+apply(erule a_redu.cases, auto)
+apply(erule l_redu.cases, auto)
+apply(erule c_redu.cases, auto)
+apply(auto simp add: trm.inject alpha abs_fresh abs_perm calc_atm)
+apply(rotate_tac 1)
+apply(drule_tac x="[(a,aa)]\<bullet>M'a" in meta_spec)
+apply(simp add: a_redu.eqvt)
+apply(rule_tac s="ImpR (x).<a>.([(a,aa)]\<bullet>M'a) b" in subst)
+apply(simp add: trm.inject alpha fresh_a_redu)
+apply(simp)
+apply(rotate_tac 1)
+apply(drule_tac x="[(x,xa)]\<bullet>M'a" in meta_spec)
+apply(simp add: a_redu.eqvt)
+apply(rule_tac s="ImpR (x).<a>.([(x,xa)]\<bullet>M'a) b" in subst)
+apply(simp add: trm.inject alpha fresh_a_redu abs_fresh abs_perm calc_atm)
+apply(simp)
+apply(rotate_tac 1)
+apply(drule_tac x="[(a,aa)]\<bullet>[(x,xa)]\<bullet>M'a" in meta_spec)
+apply(simp add: a_redu.eqvt)
+apply(rule_tac s="ImpR (x).<a>.([(a,aa)]\<bullet>[(x,xa)]\<bullet>M'a) b" in subst)
+apply(simp add: trm.inject alpha fresh_a_redu abs_fresh abs_perm calc_atm)
+apply(simp add: fresh_left calc_atm fresh_a_redu)
+apply(simp)
+done
+
+lemma AndR_in_SNa:
+  assumes a: "SNa M" "SNa N"
+  shows "SNa (AndR <a>.M <b>.N c)"
+apply(rule_tac a="M" and b="N" in double_SNa)
+apply(rule a)+
+apply(auto)
+apply(rule SNaI)
+apply(drule a_redu_AndR_elim)
+apply(auto)
+done
+
+lemma OrL_in_SNa:
+  assumes a: "SNa M" "SNa N"
+  shows "SNa (OrL (x).M (y).N z)"
+apply(rule_tac a="M" and b="N" in double_SNa)
+apply(rule a)+
+apply(auto)
+apply(rule SNaI)
+apply(drule a_redu_OrL_elim)
+apply(auto)
+done
+
+lemma ImpL_in_SNa:
+  assumes a: "SNa M" "SNa N"
+  shows "SNa (ImpL <a>.M (y).N z)"
+apply(rule_tac a="M" and b="N" in double_SNa)
+apply(rule a)+
+apply(auto)
+apply(rule SNaI)
+apply(drule a_redu_ImpL_elim)
+apply(auto)
+done
+
+lemma SNa_eqvt:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "SNa M \<Longrightarrow> SNa (pi1\<bullet>M)"
+  and   "SNa M \<Longrightarrow> SNa (pi2\<bullet>M)"
+apply -
+apply(induct rule: SNa.induct)
+apply(rule SNaI)
+apply(drule_tac pi="(rev pi1)" in a_redu.eqvt(1))
+apply(rotate_tac 1)
+apply(drule_tac x="(rev pi1)\<bullet>M'" in meta_spec)
+apply(perm_simp)
+apply(induct rule: SNa.induct)
+apply(rule SNaI)
+apply(drule_tac pi="(rev pi2)" in a_redu.eqvt(2))
+apply(rotate_tac 1)
+apply(drule_tac x="(rev pi2)\<bullet>M'" in meta_spec)
+apply(perm_simp)
+done
+
+text {* set operators *}
+
+constdefs
+  AXIOMSn::"ty \<Rightarrow> ntrm set"
+  "AXIOMSn B \<equiv> { (x):(Ax y b) | x y b. True }"
+
+  AXIOMSc::"ty \<Rightarrow> ctrm set"
+  "AXIOMSc B \<equiv> { <a>:(Ax y b) | a y b. True }"
+
+  BINDINGn::"ty \<Rightarrow> ctrm set \<Rightarrow> ntrm set"
+  "BINDINGn B X \<equiv> { (x):M | x M. \<forall>a P. <a>:P\<in>X \<longrightarrow> SNa (M{x:=<a>.P})}"
+
+  BINDINGc::"ty \<Rightarrow> ntrm set \<Rightarrow> ctrm set"
+  "BINDINGc B X \<equiv> { <a>:M | a M. \<forall>x P. (x):P\<in>X \<longrightarrow> SNa (M{a:=(x).P})}"
+
+lemma BINDINGn_decreasing:
+  shows "X\<subseteq>Y \<Longrightarrow> BINDINGn B Y \<subseteq> BINDINGn B X"
+by (simp add: BINDINGn_def) (blast) 
+
+lemma BINDINGc_decreasing:
+  shows "X\<subseteq>Y \<Longrightarrow> BINDINGc B Y \<subseteq> BINDINGc B X"
+by (simp add: BINDINGc_def) (blast) 
+
+consts
+  NOTRIGHT::"ty \<Rightarrow> ntrm set \<Rightarrow> ctrm set"
+  
+nominal_primrec
+ "NOTRIGHT (NOT B) X = { <a>:NotR (x).M a | a x M. fic (NotR (x).M a) a \<and> (x):M \<in> X }"
+apply(rule TrueI)+
+done
+
+lemma NOTRIGHT_eqvt_name:
+  fixes pi::"name prm"
+  shows "(pi\<bullet>(NOTRIGHT (NOT B) X)) = NOTRIGHT (NOT B) (pi\<bullet>X)"
+apply(auto simp add: perm_set_def)
+apply(rule_tac x="pi\<bullet>a" in exI) 
+apply(rule_tac x="pi\<bullet>xb" in exI) 
+apply(rule_tac x="pi\<bullet>M" in exI)
+apply(simp)
+apply(rule conjI)
+apply(drule_tac pi="pi" in fic.eqvt(1))
+apply(simp)
+apply(rule_tac x="(xb):M" in exI)
+apply(simp)
+apply(rule_tac x="(rev pi)\<bullet>(<a>:NotR (xa).M a)" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>a" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>xa" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>M" in exI)
+apply(simp)
+apply(drule_tac pi="rev pi" in fic.eqvt(1))
+apply(simp)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst, OF at_name_inst])
+apply(simp)
+done
+
+lemma NOTRIGHT_eqvt_coname:
+  fixes pi::"coname prm"
+  shows "(pi\<bullet>(NOTRIGHT (NOT B) X)) = NOTRIGHT (NOT B) (pi\<bullet>X)"
+apply(auto simp add: perm_set_def)
+apply(rule_tac x="pi\<bullet>a" in exI) 
+apply(rule_tac x="pi\<bullet>xb" in exI) 
+apply(rule_tac x="pi\<bullet>M" in exI)
+apply(simp)
+apply(rule conjI)
+apply(drule_tac pi="pi" in fic.eqvt(2))
+apply(simp)
+apply(rule_tac x="(xb):M" in exI)
+apply(simp)
+apply(rule_tac x="<((rev pi)\<bullet>a)>:NotR ((rev pi)\<bullet>xa).((rev pi)\<bullet>M) ((rev pi)\<bullet>a)" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>a" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>xa" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>M" in exI)
+apply(simp)
+apply(drule_tac pi="rev pi" in fic.eqvt(2))
+apply(simp)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst, OF at_coname_inst])
+apply(simp)
+done
+
+consts
+  NOTLEFT::"ty \<Rightarrow> ctrm set \<Rightarrow> ntrm set"
+  
+nominal_primrec
+ "NOTLEFT (NOT B) X = { (x):NotL <a>.M x | a x M. fin (NotL <a>.M x) x \<and> <a>:M \<in> X }"
+apply(rule TrueI)+
+done
+
+lemma NOTLEFT_eqvt_name:
+  fixes pi::"name prm"
+  shows "(pi\<bullet>(NOTLEFT (NOT B) X)) = NOTLEFT (NOT B) (pi\<bullet>X)"
+apply(auto simp add: perm_set_def)
+apply(rule_tac x="pi\<bullet>a" in exI) 
+apply(rule_tac x="pi\<bullet>xb" in exI) 
+apply(rule_tac x="pi\<bullet>M" in exI)
+apply(simp)
+apply(rule conjI)
+apply(drule_tac pi="pi" in fin.eqvt(1))
+apply(simp)
+apply(rule_tac x="<a>:M" in exI)
+apply(simp)
+apply(rule_tac x="(((rev pi)\<bullet>xa)):NotL <((rev pi)\<bullet>a)>.((rev pi)\<bullet>M) ((rev pi)\<bullet>xa)" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>a" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>xa" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>M" in exI)
+apply(simp)
+apply(drule_tac pi="rev pi" in fin.eqvt(1))
+apply(simp)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst, OF at_name_inst])
+apply(simp)
+done
+
+lemma NOTLEFT_eqvt_coname:
+  fixes pi::"coname prm"
+  shows "(pi\<bullet>(NOTLEFT (NOT B) X)) = NOTLEFT (NOT B) (pi\<bullet>X)"
+apply(auto simp add: perm_set_def)
+apply(rule_tac x="pi\<bullet>a" in exI) 
+apply(rule_tac x="pi\<bullet>xb" in exI) 
+apply(rule_tac x="pi\<bullet>M" in exI)
+apply(simp)
+apply(rule conjI)
+apply(drule_tac pi="pi" in fin.eqvt(2))
+apply(simp)
+apply(rule_tac x="<a>:M" in exI)
+apply(simp)
+apply(rule_tac x="(((rev pi)\<bullet>xa)):NotL <((rev pi)\<bullet>a)>.((rev pi)\<bullet>M) ((rev pi)\<bullet>xa)" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>a" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>xa" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>M" in exI)
+apply(simp)
+apply(drule_tac pi="rev pi" in fin.eqvt(2))
+apply(simp)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst, OF at_coname_inst])
+apply(simp)
+done
+
+consts
+  ANDRIGHT::"ty \<Rightarrow> ctrm set \<Rightarrow> ctrm set \<Rightarrow> ctrm set"
+  
+nominal_primrec
+ "ANDRIGHT (B AND C) X Y = 
+            { <c>:AndR <a>.M <b>.N c | c a b M N. fic (AndR <a>.M <b>.N c) c \<and> <a>:M \<in> X \<and> <b>:N \<in> Y }"
+apply(rule TrueI)+
+done
+
+lemma ANDRIGHT_eqvt_name:
+  fixes pi::"name prm"
+  shows "(pi\<bullet>(ANDRIGHT (A AND B) X Y)) = ANDRIGHT (A AND B) (pi\<bullet>X) (pi\<bullet>Y)"
+apply(auto simp add: perm_set_def)
+apply(rule_tac x="pi\<bullet>c" in exI)
+apply(rule_tac x="pi\<bullet>a" in exI)
+apply(rule_tac x="pi\<bullet>b" in exI)
+apply(rule_tac x="pi\<bullet>M" in exI)
+apply(rule_tac x="pi\<bullet>N" in exI)
+apply(simp)
+apply(rule conjI)
+apply(drule_tac pi="pi" in fic.eqvt(1))
+apply(simp)
+apply(rule conjI)
+apply(rule_tac x="<a>:M" in exI)
+apply(simp)
+apply(rule_tac x="<b>:N" in exI)
+apply(simp)
+apply(rule_tac x="(rev pi)\<bullet>(<c>:AndR <a>.M <b>.N c)" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>c" in exI)
+apply(rule_tac x="(rev pi)\<bullet>a" in exI)
+apply(rule_tac x="(rev pi)\<bullet>b" in exI)
+apply(rule_tac x="(rev pi)\<bullet>M" in exI)
+apply(rule_tac x="(rev pi)\<bullet>N" in exI)
+apply(simp)
+apply(drule_tac pi="rev pi" in fic.eqvt(1))
+apply(simp)
+apply(drule sym)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst, OF at_name_inst])
+apply(drule pt_bij1[OF pt_name_inst, OF at_name_inst])
+apply(simp)
+done
+
+lemma ANDRIGHT_eqvt_coname:
+  fixes pi::"coname prm"
+  shows "(pi\<bullet>(ANDRIGHT (A AND B) X Y)) = ANDRIGHT (A AND B) (pi\<bullet>X) (pi\<bullet>Y)"
+apply(auto simp add: perm_set_def)
+apply(rule_tac x="pi\<bullet>c" in exI)
+apply(rule_tac x="pi\<bullet>a" in exI)
+apply(rule_tac x="pi\<bullet>b" in exI)
+apply(rule_tac x="pi\<bullet>M" in exI)
+apply(rule_tac x="pi\<bullet>N" in exI)
+apply(simp)
+apply(rule conjI)
+apply(drule_tac pi="pi" in fic.eqvt(2))
+apply(simp)
+apply(rule conjI)
+apply(rule_tac x="<a>:M" in exI)
+apply(simp)
+apply(rule_tac x="<b>:N" in exI)
+apply(simp)
+apply(rule_tac x="(rev pi)\<bullet>(<c>:AndR <a>.M <b>.N c)" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>c" in exI)
+apply(rule_tac x="(rev pi)\<bullet>a" in exI)
+apply(rule_tac x="(rev pi)\<bullet>b" in exI)
+apply(rule_tac x="(rev pi)\<bullet>M" in exI)
+apply(rule_tac x="(rev pi)\<bullet>N" in exI)
+apply(simp)
+apply(drule_tac pi="rev pi" in fic.eqvt(2))
+apply(simp)
+apply(drule sym)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst, OF at_coname_inst])
+apply(drule pt_bij1[OF pt_coname_inst, OF at_coname_inst])
+apply(simp)
+done
+
+consts
+  ANDLEFT1::"ty \<Rightarrow> ntrm set \<Rightarrow> ntrm set"
+
+nominal_primrec
+ "ANDLEFT1 (B AND C) X = { (y):AndL1 (x).M y | x y M. fin (AndL1 (x).M y) y \<and> (x):M \<in> X }"
+apply(rule TrueI)+
+done
+
+lemma ANDLEFT1_eqvt_name:
+  fixes pi::"name prm"
+  shows "(pi\<bullet>(ANDLEFT1 (A AND B) X)) = ANDLEFT1 (A AND B) (pi\<bullet>X)"
+apply(auto simp add: perm_set_def)
+apply(rule_tac x="pi\<bullet>xb" in exI) 
+apply(rule_tac x="pi\<bullet>y" in exI) 
+apply(rule_tac x="pi\<bullet>M" in exI)
+apply(simp)
+apply(rule conjI)
+apply(drule_tac pi="pi" in fin.eqvt(1))
+apply(simp)
+apply(rule_tac x="(xb):M" in exI)
+apply(simp)
+apply(rule_tac x="(rev pi)\<bullet>((y):AndL1 (xa).M y)" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>xa" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>y" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>M" in exI)
+apply(simp)
+apply(drule_tac pi="rev pi" in fin.eqvt(1))
+apply(simp)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst, OF at_name_inst])
+apply(simp)
+done
+
+lemma ANDLEFT1_eqvt_coname:
+  fixes pi::"coname prm"
+  shows "(pi\<bullet>(ANDLEFT1 (A AND B) X)) = ANDLEFT1 (A AND B) (pi\<bullet>X)"
+apply(auto simp add: perm_set_def)
+apply(rule_tac x="pi\<bullet>xb" in exI) 
+apply(rule_tac x="pi\<bullet>y" in exI) 
+apply(rule_tac x="pi\<bullet>M" in exI)
+apply(simp)
+apply(rule conjI)
+apply(drule_tac pi="pi" in fin.eqvt(2))
+apply(simp)
+apply(rule_tac x="(xb):M" in exI)
+apply(simp)
+apply(rule_tac x="(rev pi)\<bullet>((y):AndL1 (xa).M y)" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>xa" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>y" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>M" in exI)
+apply(simp)
+apply(drule_tac pi="rev pi" in fin.eqvt(2))
+apply(simp)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst, OF at_coname_inst])
+apply(simp)
+done
+
+consts
+  ANDLEFT2::"ty \<Rightarrow> ntrm set \<Rightarrow> ntrm set"
+
+nominal_primrec
+ "ANDLEFT2 (B AND C) X = { (y):AndL2 (x).M y | x y M. fin (AndL2 (x).M y) y \<and> (x):M \<in> X }"
+apply(rule TrueI)+
+done
+
+lemma ANDLEFT2_eqvt_name:
+  fixes pi::"name prm"
+  shows "(pi\<bullet>(ANDLEFT2 (A AND B) X)) = ANDLEFT2 (A AND B) (pi\<bullet>X)"
+apply(auto simp add: perm_set_def)
+apply(rule_tac x="pi\<bullet>xb" in exI) 
+apply(rule_tac x="pi\<bullet>y" in exI) 
+apply(rule_tac x="pi\<bullet>M" in exI)
+apply(simp)
+apply(rule conjI)
+apply(drule_tac pi="pi" in fin.eqvt(1))
+apply(simp)
+apply(rule_tac x="(xb):M" in exI)
+apply(simp)
+apply(rule_tac x="(rev pi)\<bullet>((y):AndL2 (xa).M y)" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>xa" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>y" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>M" in exI)
+apply(simp)
+apply(drule_tac pi="rev pi" in fin.eqvt(1))
+apply(simp)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst, OF at_name_inst])
+apply(simp)
+done
+
+lemma ANDLEFT2_eqvt_coname:
+  fixes pi::"coname prm"
+  shows "(pi\<bullet>(ANDLEFT2 (A AND B) X)) = ANDLEFT2 (A AND B) (pi\<bullet>X)"
+apply(auto simp add: perm_set_def)
+apply(rule_tac x="pi\<bullet>xb" in exI) 
+apply(rule_tac x="pi\<bullet>y" in exI) 
+apply(rule_tac x="pi\<bullet>M" in exI)
+apply(simp)
+apply(rule conjI)
+apply(drule_tac pi="pi" in fin.eqvt(2))
+apply(simp)
+apply(rule_tac x="(xb):M" in exI)
+apply(simp)
+apply(rule_tac x="(rev pi)\<bullet>((y):AndL2 (xa).M y)" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>xa" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>y" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>M" in exI)
+apply(simp)
+apply(drule_tac pi="rev pi" in fin.eqvt(2))
+apply(simp)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst, OF at_coname_inst])
+apply(simp)
+done
+
+consts
+  ORLEFT::"ty \<Rightarrow> ntrm set \<Rightarrow> ntrm set \<Rightarrow> ntrm set"
+  
+nominal_primrec
+ "ORLEFT (B OR C) X Y = 
+            { (z):OrL (x).M (y).N z | x y z M N. fin (OrL (x).M (y).N z) z \<and> (x):M \<in> X \<and> (y):N \<in> Y }"
+apply(rule TrueI)+
+done
+
+lemma ORLEFT_eqvt_name:
+  fixes pi::"name prm"
+  shows "(pi\<bullet>(ORLEFT (A OR B) X Y)) = ORLEFT (A OR B) (pi\<bullet>X) (pi\<bullet>Y)"
+apply(auto simp add: perm_set_def)
+apply(rule_tac x="pi\<bullet>xb" in exI)
+apply(rule_tac x="pi\<bullet>y" in exI)
+apply(rule_tac x="pi\<bullet>z" in exI)
+apply(rule_tac x="pi\<bullet>M" in exI)
+apply(rule_tac x="pi\<bullet>N" in exI)
+apply(simp)
+apply(rule conjI)
+apply(drule_tac pi="pi" in fin.eqvt(1))
+apply(simp)
+apply(rule conjI)
+apply(rule_tac x="(xb):M" in exI)
+apply(simp)
+apply(rule_tac x="(y):N" in exI)
+apply(simp)
+apply(rule_tac x="(rev pi)\<bullet>((z):OrL (xa).M (y).N z)" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>xa" in exI)
+apply(rule_tac x="(rev pi)\<bullet>y" in exI)
+apply(rule_tac x="(rev pi)\<bullet>z" in exI)
+apply(rule_tac x="(rev pi)\<bullet>M" in exI)
+apply(rule_tac x="(rev pi)\<bullet>N" in exI)
+apply(simp)
+apply(drule_tac pi="rev pi" in fin.eqvt(1))
+apply(simp)
+apply(drule sym)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst, OF at_name_inst])
+apply(drule pt_bij1[OF pt_name_inst, OF at_name_inst])
+apply(simp)
+done
+
+lemma ORLEFT_eqvt_coname:
+  fixes pi::"coname prm"
+  shows "(pi\<bullet>(ORLEFT (A OR B) X Y)) = ORLEFT (A OR B) (pi\<bullet>X) (pi\<bullet>Y)"
+apply(auto simp add: perm_set_def)
+apply(rule_tac x="pi\<bullet>xb" in exI)
+apply(rule_tac x="pi\<bullet>y" in exI)
+apply(rule_tac x="pi\<bullet>z" in exI)
+apply(rule_tac x="pi\<bullet>M" in exI)
+apply(rule_tac x="pi\<bullet>N" in exI)
+apply(simp)
+apply(rule conjI)
+apply(drule_tac pi="pi" in fin.eqvt(2))
+apply(simp)
+apply(rule conjI)
+apply(rule_tac x="(xb):M" in exI)
+apply(simp)
+apply(rule_tac x="(y):N" in exI)
+apply(simp)
+apply(rule_tac x="(rev pi)\<bullet>((z):OrL (xa).M (y).N z)" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>xa" in exI)
+apply(rule_tac x="(rev pi)\<bullet>y" in exI)
+apply(rule_tac x="(rev pi)\<bullet>z" in exI)
+apply(rule_tac x="(rev pi)\<bullet>M" in exI)
+apply(rule_tac x="(rev pi)\<bullet>N" in exI)
+apply(simp)
+apply(drule_tac pi="rev pi" in fin.eqvt(2))
+apply(simp)
+apply(drule sym)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst, OF at_coname_inst])
+apply(drule pt_bij1[OF pt_coname_inst, OF at_coname_inst])
+apply(simp)
+done
+
+consts
+  ORRIGHT1::"ty \<Rightarrow> ctrm set \<Rightarrow> ctrm set"
+
+nominal_primrec
+ "ORRIGHT1 (B OR C) X = { <b>:OrR1 <a>.M b | a b M. fic (OrR1 <a>.M b) b \<and> <a>:M \<in> X }"
+apply(rule TrueI)+
+done
+
+lemma ORRIGHT1_eqvt_name:
+  fixes pi::"name prm"
+  shows "(pi\<bullet>(ORRIGHT1 (A OR B) X)) = ORRIGHT1 (A OR B) (pi\<bullet>X)"
+apply(auto simp add: perm_set_def)
+apply(rule_tac x="pi\<bullet>a" in exI) 
+apply(rule_tac x="pi\<bullet>b" in exI) 
+apply(rule_tac x="pi\<bullet>M" in exI)
+apply(simp)
+apply(rule conjI)
+apply(drule_tac pi="pi" in fic.eqvt(1))
+apply(simp)
+apply(rule_tac x="<a>:M" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>(<b>:OrR1 <a>.M b)" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>a" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>b" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>M" in exI)
+apply(simp)
+apply(drule_tac pi="rev pi" in fic.eqvt(1))
+apply(simp)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst, OF at_name_inst])
+apply(simp)
+done
+
+lemma ORRIGHT1_eqvt_coname:
+  fixes pi::"coname prm"
+  shows "(pi\<bullet>(ORRIGHT1 (A OR B) X)) = ORRIGHT1 (A OR B) (pi\<bullet>X)"
+apply(auto simp add: perm_set_def)
+apply(rule_tac x="pi\<bullet>a" in exI) 
+apply(rule_tac x="pi\<bullet>b" in exI) 
+apply(rule_tac x="pi\<bullet>M" in exI)
+apply(simp)
+apply(rule conjI)
+apply(drule_tac pi="pi" in fic.eqvt(2))
+apply(simp)
+apply(rule_tac x="<a>:M" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>(<b>:OrR1 <a>.M b)" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>a" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>b" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>M" in exI)
+apply(simp)
+apply(drule_tac pi="rev pi" in fic.eqvt(2))
+apply(simp)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst, OF at_coname_inst])
+apply(simp)
+done
+
+consts
+  ORRIGHT2::"ty \<Rightarrow> ctrm set \<Rightarrow> ctrm set"
+
+nominal_primrec
+ "ORRIGHT2 (B OR C) X = { <b>:OrR2 <a>.M b | a b M. fic (OrR2 <a>.M b) b \<and> <a>:M \<in> X }"
+apply(rule TrueI)+
+done
+
+lemma ORRIGHT2_eqvt_name:
+  fixes pi::"name prm"
+  shows "(pi\<bullet>(ORRIGHT2 (A OR B) X)) = ORRIGHT2 (A OR B) (pi\<bullet>X)"
+apply(auto simp add: perm_set_def)
+apply(rule_tac x="pi\<bullet>a" in exI) 
+apply(rule_tac x="pi\<bullet>b" in exI) 
+apply(rule_tac x="pi\<bullet>M" in exI)
+apply(simp)
+apply(rule conjI)
+apply(drule_tac pi="pi" in fic.eqvt(1))
+apply(simp)
+apply(rule_tac x="<a>:M" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>(<b>:OrR2 <a>.M b)" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>a" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>b" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>M" in exI)
+apply(simp)
+apply(drule_tac pi="rev pi" in fic.eqvt(1))
+apply(simp)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst, OF at_name_inst])
+apply(simp)
+done
+
+lemma ORRIGHT2_eqvt_coname:
+  fixes pi::"coname prm"
+  shows "(pi\<bullet>(ORRIGHT2 (A OR B) X)) = ORRIGHT2 (A OR B) (pi\<bullet>X)"
+apply(auto simp add: perm_set_def)
+apply(rule_tac x="pi\<bullet>a" in exI) 
+apply(rule_tac x="pi\<bullet>b" in exI) 
+apply(rule_tac x="pi\<bullet>M" in exI)
+apply(simp)
+apply(rule conjI)
+apply(drule_tac pi="pi" in fic.eqvt(2))
+apply(simp)
+apply(rule_tac x="<a>:M" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>(<b>:OrR2 <a>.M b)" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>a" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>b" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>M" in exI)
+apply(simp)
+apply(drule_tac pi="rev pi" in fic.eqvt(2))
+apply(simp)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst, OF at_coname_inst])
+apply(simp)
+done
+
+consts
+  IMPRIGHT::"ty \<Rightarrow> ntrm set \<Rightarrow> ctrm set \<Rightarrow> ntrm set \<Rightarrow> ctrm set \<Rightarrow> ctrm set"
+
+nominal_primrec
+ "IMPRIGHT (B IMP C) X Y Z U= 
+        { <b>:ImpR (x).<a>.M b | x a b M. fic (ImpR (x).<a>.M b) b 
+                                        \<and> (\<forall>z P. x\<sharp>(z,P) \<and> (z):P \<in> Z \<longrightarrow> (x):(M{a:=(z).P}) \<in> X)
+                                        \<and> (\<forall>c Q. a\<sharp>(c,Q) \<and> <c>:Q \<in> U \<longrightarrow> <a>:(M{x:=<c>.Q}) \<in> Y)}"
+apply(rule TrueI)+
+done
+
+lemma IMPRIGHT_eqvt_name:
+  fixes pi::"name prm"
+  shows "(pi\<bullet>(IMPRIGHT (A IMP B) X Y Z U)) = IMPRIGHT (A IMP B) (pi\<bullet>X) (pi\<bullet>Y) (pi\<bullet>Z) (pi\<bullet>U)"
+apply(auto simp add: perm_set_def)
+apply(rule_tac x="pi\<bullet>xb" in exI)
+apply(rule_tac x="pi\<bullet>a" in exI)
+apply(rule_tac x="pi\<bullet>b" in exI)
+apply(rule_tac x="pi\<bullet>M" in exI)
+apply(simp)
+apply(rule conjI)
+apply(drule_tac pi="pi" in fic.eqvt(1))
+apply(simp)
+apply(rule conjI)
+apply(auto)[1]
+apply(rule_tac x="(xb):(M{a:=((rev pi)\<bullet>z).((rev pi)\<bullet>P)})" in exI)
+apply(perm_simp add: csubst_eqvt)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst, OF at_name_inst])
+apply(simp)
+apply(simp add: fresh_right)
+apply(auto)[1]
+apply(rule_tac x="<a>:(M{xb:=<((rev pi)\<bullet>c)>.((rev pi)\<bullet>Q)})" in exI)
+apply(perm_simp add: nsubst_eqvt)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst, OF at_name_inst])
+apply(simp add: fresh_right)
+apply(rule_tac x="(rev pi)\<bullet>(<b>:ImpR xa.<a>.M b)" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>xa" in exI)
+apply(rule_tac x="(rev pi)\<bullet>a" in exI)
+apply(rule_tac x="(rev pi)\<bullet>b" in exI)
+apply(rule_tac x="(rev pi)\<bullet>M" in exI)
+apply(simp)
+apply(drule_tac pi="rev pi" in fic.eqvt(1))
+apply(simp)
+apply(rule conjI)
+apply(auto)[1]
+apply(drule_tac x="pi\<bullet>z" in spec)
+apply(drule_tac x="pi\<bullet>P" in spec)
+apply(drule mp)
+apply(simp add: fresh_right)
+apply(rule_tac x="(z):P" in exI)
+apply(simp)
+apply(auto)[1]
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst, OF at_name_inst])
+apply(perm_simp add: csubst_eqvt fresh_right)
+apply(auto)[1]
+apply(drule_tac x="pi\<bullet>c" in spec)
+apply(drule_tac x="pi\<bullet>Q" in spec)
+apply(drule mp)
+apply(simp add: fresh_right)
+apply(rule_tac x="<c>:Q" in exI)
+apply(simp)
+apply(auto)[1]
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst, OF at_name_inst])
+apply(perm_simp add: nsubst_eqvt)
+done
+
+lemma IMPRIGHT_eqvt_coname:
+  fixes pi::"coname prm"
+  shows "(pi\<bullet>(IMPRIGHT (A IMP B) X Y Z U)) = IMPRIGHT (A IMP B) (pi\<bullet>X) (pi\<bullet>Y) (pi\<bullet>Z) (pi\<bullet>U)"
+apply(auto simp add: perm_set_def)
+apply(rule_tac x="pi\<bullet>xb" in exI)
+apply(rule_tac x="pi\<bullet>a" in exI)
+apply(rule_tac x="pi\<bullet>b" in exI)
+apply(rule_tac x="pi\<bullet>M" in exI)
+apply(simp)
+apply(rule conjI)
+apply(drule_tac pi="pi" in fic.eqvt(2))
+apply(simp)
+apply(rule conjI)
+apply(auto)[1]
+apply(rule_tac x="(xb):(M{a:=((rev pi)\<bullet>z).((rev pi)\<bullet>P)})" in exI)
+apply(perm_simp add: csubst_eqvt)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: fresh_right)
+apply(auto)[1]
+apply(rule_tac x="<a>:(M{xb:=<((rev pi)\<bullet>c)>.((rev pi)\<bullet>Q)})" in exI)
+apply(perm_simp add: nsubst_eqvt)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: fresh_right)
+apply(rule_tac x="(rev pi)\<bullet>(<b>:ImpR xa.<a>.M b)" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>xa" in exI)
+apply(rule_tac x="(rev pi)\<bullet>a" in exI)
+apply(rule_tac x="(rev pi)\<bullet>b" in exI)
+apply(rule_tac x="(rev pi)\<bullet>M" in exI)
+apply(simp)
+apply(drule_tac pi="rev pi" in fic.eqvt(2))
+apply(simp)
+apply(rule conjI)
+apply(auto)[1]
+apply(drule_tac x="pi\<bullet>z" in spec)
+apply(drule_tac x="pi\<bullet>P" in spec)
+apply(simp add: fresh_right)
+apply(drule mp)
+apply(rule_tac x="(z):P" in exI)
+apply(simp)
+apply(auto)[1]
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst, OF at_coname_inst])
+apply(perm_simp add: csubst_eqvt fresh_right)
+apply(auto)[1]
+apply(drule_tac x="pi\<bullet>c" in spec)
+apply(drule_tac x="pi\<bullet>Q" in spec)
+apply(simp add: fresh_right)
+apply(drule mp)
+apply(rule_tac x="<c>:Q" in exI)
+apply(simp)
+apply(auto)[1]
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst, OF at_coname_inst])
+apply(perm_simp add: nsubst_eqvt fresh_right)
+done
+
+consts
+  IMPLEFT::"ty \<Rightarrow> ctrm set \<Rightarrow> ntrm set \<Rightarrow> ntrm set"
+
+nominal_primrec
+ "IMPLEFT (B IMP C) X Y = 
+        { (y):ImpL <a>.M (x).N y | x a y M N. fin (ImpL <a>.M (x).N y) y \<and> <a>:M \<in> X \<and> (x):N \<in> Y }"
+apply(rule TrueI)+
+done
+
+lemma IMPLEFT_eqvt_name:
+  fixes pi::"name prm"
+  shows "(pi\<bullet>(IMPLEFT (A IMP B) X Y)) = IMPLEFT (A IMP B) (pi\<bullet>X) (pi\<bullet>Y)"
+apply(auto simp add: perm_set_def)
+apply(rule_tac x="pi\<bullet>xb" in exI) 
+apply(rule_tac x="pi\<bullet>a" in exI)
+apply(rule_tac x="pi\<bullet>y" in exI) 
+apply(rule_tac x="pi\<bullet>M" in exI) 
+apply(rule_tac x="pi\<bullet>N" in exI)
+apply(simp)
+apply(rule conjI)
+apply(drule_tac pi="pi" in fin.eqvt(1))
+apply(simp)
+apply(rule conjI)
+apply(rule_tac x="<a>:M" in exI)
+apply(simp)
+apply(rule_tac x="(xb):N" in exI)
+apply(simp)
+apply(rule_tac x="(rev pi)\<bullet>((y):ImpL <a>.M (xa).N y)" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>xa" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>a" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>y" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>M" in exI)
+apply(rule_tac x="(rev pi)\<bullet>N" in exI)
+apply(simp)
+apply(drule_tac pi="rev pi" in fin.eqvt(1))
+apply(simp)
+apply(drule sym)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst, OF at_name_inst])
+apply(drule pt_bij1[OF pt_name_inst, OF at_name_inst])
+apply(simp)
+done
+
+lemma IMPLEFT_eqvt_coname:
+  fixes pi::"coname prm"
+  shows "(pi\<bullet>(IMPLEFT (A IMP B) X Y)) = IMPLEFT (A IMP B) (pi\<bullet>X) (pi\<bullet>Y)"
+apply(auto simp add: perm_set_def)
+apply(rule_tac x="pi\<bullet>xb" in exI) 
+apply(rule_tac x="pi\<bullet>a" in exI)
+apply(rule_tac x="pi\<bullet>y" in exI) 
+apply(rule_tac x="pi\<bullet>M" in exI) 
+apply(rule_tac x="pi\<bullet>N" in exI)
+apply(simp)
+apply(rule conjI)
+apply(drule_tac pi="pi" in fin.eqvt(2))
+apply(simp)
+apply(rule conjI)
+apply(rule_tac x="<a>:M" in exI)
+apply(simp)
+apply(rule_tac x="(xb):N" in exI)
+apply(simp)
+apply(rule_tac x="(rev pi)\<bullet>((y):ImpL <a>.M (xa).N y)" in exI)
+apply(perm_simp)
+apply(rule_tac x="(rev pi)\<bullet>xa" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>a" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>y" in exI) 
+apply(rule_tac x="(rev pi)\<bullet>M" in exI)
+apply(rule_tac x="(rev pi)\<bullet>N" in exI)
+apply(simp)
+apply(drule_tac pi="rev pi" in fin.eqvt(2))
+apply(simp)
+apply(drule sym)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst, OF at_coname_inst])
+apply(drule pt_bij1[OF pt_coname_inst, OF at_coname_inst])
+apply(simp)
+done
+
+lemma sum_cases:
+ shows "(\<exists>y. x=Inl y) \<or> (\<exists>y. x=Inr y)"
+apply(rule_tac s="x" in sumE)
+apply(auto)
+done
+
+function
+  NEGc::"ty \<Rightarrow> ntrm set \<Rightarrow> ctrm set"
+and
+  NEGn::"ty \<Rightarrow> ctrm set \<Rightarrow> ntrm set"
+where
+  "NEGc (PR A)    X = AXIOMSc (PR A) \<union> BINDINGc (PR A) X"  
+| "NEGc (NOT C)   X = AXIOMSc (NOT C) \<union> BINDINGc (NOT C) X 
+                         \<union> NOTRIGHT (NOT C) (lfp (NEGn C \<circ> NEGc C))"  
+| "NEGc (C AND D) X = AXIOMSc (C AND D) \<union> BINDINGc (C AND D) X 
+                     \<union> ANDRIGHT (C AND D) (NEGc C (lfp (NEGn C \<circ> NEGc C))) (NEGc D (lfp (NEGn D \<circ> NEGc D)))"
+| "NEGc (C OR D)  X = AXIOMSc (C OR D) \<union> BINDINGc (C OR D) X  
+                         \<union> ORRIGHT1 (C OR D) (NEGc C (lfp (NEGn C \<circ> NEGc C))) 
+                         \<union> ORRIGHT2 (C OR D) (NEGc D (lfp (NEGn D \<circ> NEGc D)))"
+| "NEGc (C IMP D) X = AXIOMSc (C IMP D) \<union> BINDINGc (C IMP D) X 
+    \<union> IMPRIGHT (C IMP D) (lfp (NEGn C \<circ> NEGc C)) (NEGc D (lfp (NEGn D \<circ> NEGc D))) 
+                          (lfp (NEGn D \<circ> NEGc D)) (NEGc C (lfp (NEGn C \<circ> NEGc C)))"
+| "NEGn (PR A)    X = AXIOMSn (PR A) \<union> BINDINGn (PR A) X"   
+| "NEGn (NOT C)   X = AXIOMSn (NOT C) \<union> BINDINGn (NOT C) X 
+                         \<union> NOTLEFT (NOT C) (NEGc C (lfp (NEGn C \<circ> NEGc C)))"  
+| "NEGn (C AND D) X = AXIOMSn (C AND D) \<union> BINDINGn (C AND D) X 
+                         \<union> ANDLEFT1 (C AND D) (lfp (NEGn C \<circ> NEGc C)) 
+                         \<union> ANDLEFT2 (C AND D) (lfp (NEGn D \<circ> NEGc D))"
+| "NEGn (C OR D)  X = AXIOMSn (C OR D) \<union> BINDINGn (C OR D) X 
+                         \<union> ORLEFT (C OR D) (lfp (NEGn C \<circ> NEGc C)) (lfp (NEGn D \<circ> NEGc D))"
+| "NEGn (C IMP D) X = AXIOMSn (C IMP D) \<union> BINDINGn (C IMP D) X 
+                         \<union> IMPLEFT (C IMP D) (NEGc C (lfp (NEGn C \<circ> NEGc C))) (lfp (NEGn D \<circ> NEGc D))"
+using ty_cases sum_cases 
+apply(auto simp add: ty.inject)
+apply(drule_tac x="x" in meta_spec)
+apply(auto simp add: ty.inject)
+apply(rotate_tac 10)
+apply(drule_tac x="a" in meta_spec)
+apply(auto simp add: ty.inject)
+apply(blast)
+apply(blast)
+apply(blast)
+apply(rotate_tac 10)
+apply(drule_tac x="a" in meta_spec)
+apply(auto simp add: ty.inject)
+apply(blast)
+apply(blast)
+apply(blast)
+done
+
+termination
+apply(relation "measure (sum_case (size\<circ>fst) (size\<circ>fst))")
+apply(simp_all)
+done
+
+text {* Candidates *}
+
+lemma test1:
+  shows "x\<in>(X\<union>Y) = (x\<in>X \<or> x\<in>Y)"
+by blast
+
+lemma test2:
+  shows "x\<in>(X\<inter>Y) = (x\<in>X \<and> x\<in>Y)"
+by blast
+
+lemma pt_Collect_eqvt:
+  fixes pi::"'x prm"
+  assumes pt: "pt TYPE('a) TYPE('x)"
+  and     at: "at TYPE('x)"
+  shows "pi\<bullet>{x::'a. P x} = {x. P ((rev pi)\<bullet>x)}"
+apply(auto simp add: perm_set_def  pt_rev_pi[OF pt, OF at])
+apply(rule_tac x="(rev pi)\<bullet>x" in exI)
+apply(simp add: pt_pi_rev[OF pt, OF at])
+done
+
+lemma big_inter_eqvt:
+  fixes pi1::"name prm"
+  and   X::"('a::pt_name) set set"
+  and   pi2::"coname prm"
+  and   Y::"('b::pt_coname) set set"
+  shows "(pi1\<bullet>(\<Inter> X)) = \<Inter> (pi1\<bullet>X)"
+  and   "(pi2\<bullet>(\<Inter> Y)) = \<Inter> (pi2\<bullet>Y)"
+apply(auto simp add: perm_set_def)
+apply(rule_tac x="(rev pi1)\<bullet>x" in exI)
+apply(perm_simp)
+apply(rule ballI)
+apply(drule_tac x="pi1\<bullet>xa" in spec)
+apply(auto)
+apply(drule_tac x="xa" in spec)
+apply(auto)[1]
+apply(rule_tac x="(rev pi1)\<bullet>xb" in exI)
+apply(perm_simp)
+apply(simp add: pt_set_bij1[OF pt_name_inst, OF at_name_inst])
+apply(simp add: pt_set_bij[OF pt_name_inst, OF at_name_inst])
+apply(simp add: pt_set_bij1[OF pt_name_inst, OF at_name_inst])
+apply(rule_tac x="(rev pi2)\<bullet>x" in exI)
+apply(perm_simp)
+apply(rule ballI)
+apply(drule_tac x="pi2\<bullet>xa" in spec)
+apply(auto)
+apply(drule_tac x="xa" in spec)
+apply(auto)[1]
+apply(rule_tac x="(rev pi2)\<bullet>xb" in exI)
+apply(perm_simp)
+apply(simp add: pt_set_bij1[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: pt_set_bij[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: pt_set_bij1[OF pt_coname_inst, OF at_coname_inst])
+done
+
+lemma lfp_eqvt:
+  fixes pi1::"name prm"
+  and   f::"'a set \<Rightarrow> ('a::pt_name) set"
+  and   pi2::"coname prm"
+  and   g::"'b set \<Rightarrow> ('b::pt_coname) set"
+  shows "pi1\<bullet>(lfp f) = lfp (pi1\<bullet>f)"
+  and   "pi2\<bullet>(lfp g) = lfp (pi2\<bullet>g)"
+apply(simp add: lfp_def)
+apply(simp add: Inf_set_def)
+apply(simp add: big_inter_eqvt)
+apply(simp add: pt_Collect_eqvt[OF pt_name_inst, OF at_name_inst])
+apply(subgoal_tac "{u. (pi1\<bullet>f) u \<subseteq> u} = {u. ((rev pi1)\<bullet>((pi1\<bullet>f) u)) \<subseteq> ((rev pi1)\<bullet>u)}")
+apply(perm_simp)
+apply(simp add: pt_subseteq_eqvt[OF pt_name_inst,OF at_name_inst])
+apply(simp add: lfp_def)
+apply(simp add: Inf_set_def)
+apply(simp add: big_inter_eqvt)
+apply(simp add: pt_Collect_eqvt[OF pt_coname_inst, OF at_coname_inst])
+apply(subgoal_tac "{u. (pi2\<bullet>g) u \<subseteq> u} = {u. ((rev pi2)\<bullet>((pi2\<bullet>g) u)) \<subseteq> ((rev pi2)\<bullet>u)}")
+apply(perm_simp)
+apply(simp add: pt_subseteq_eqvt[OF pt_coname_inst,OF at_coname_inst])
+done
+
+abbreviation
+  CANDn::"ty \<Rightarrow> ntrm set"  ("\<parallel>'(_')\<parallel>" [60] 60) 
+where
+  "\<parallel>(B)\<parallel> \<equiv> lfp (NEGn B \<circ> NEGc B)" 
+
+abbreviation
+  CANDc::"ty \<Rightarrow> ctrm set"  ("\<parallel><_>\<parallel>" [60] 60)
+where
+  "\<parallel><B>\<parallel> \<equiv> NEGc B (\<parallel>(B)\<parallel>)"
+
+lemma NEGn_decreasing:
+  shows "X\<subseteq>Y \<Longrightarrow> NEGn B Y \<subseteq> NEGn B X"
+by (nominal_induct B rule: ty.induct)
+   (auto dest: BINDINGn_decreasing)
+
+lemma NEGc_decreasing:
+  shows "X\<subseteq>Y \<Longrightarrow> NEGc B Y \<subseteq> NEGc B X"
+by (nominal_induct B rule: ty.induct)
+   (auto dest: BINDINGc_decreasing)
+
+lemma mono_NEGn_NEGc:
+  shows "mono (NEGn B \<circ> NEGc B)"
+  and   "mono (NEGc B \<circ> NEGn B)"
+proof -
+  have "\<forall>X Y. X\<subseteq>Y \<longrightarrow> NEGn B (NEGc B X) \<subseteq> NEGn B (NEGc B Y)"
+  proof (intro strip)
+    fix X::"ntrm set" and Y::"ntrm set"
+    assume "X\<subseteq>Y"
+    then have "NEGc B Y \<subseteq> NEGc B X" by (simp add: NEGc_decreasing)
+    then show "NEGn B (NEGc B X) \<subseteq> NEGn B (NEGc B Y)" by (simp add: NEGn_decreasing)
+  qed
+  then show "mono (NEGn B \<circ> NEGc B)" by (simp add: mono_def)
+next
+  have "\<forall>X Y. X\<subseteq>Y \<longrightarrow> NEGc B (NEGn B X) \<subseteq> NEGc B (NEGn B Y)"
+  proof (intro strip)
+    fix X::"ctrm set" and Y::"ctrm set"
+    assume "X\<subseteq>Y"
+    then have "NEGn B Y \<subseteq> NEGn B X" by (simp add: NEGn_decreasing)
+    then show "NEGc B (NEGn B X) \<subseteq> NEGc B (NEGn B Y)" by (simp add: NEGc_decreasing)
+  qed
+  then show "mono (NEGc B \<circ> NEGn B)" by (simp add: mono_def)
+qed
+
+lemma NEG_simp:
+  shows "\<parallel><B>\<parallel> = NEGc B (\<parallel>(B)\<parallel>)"
+  and   "\<parallel>(B)\<parallel> = NEGn B (\<parallel><B>\<parallel>)"
+proof -
+  show "\<parallel><B>\<parallel> = NEGc B (\<parallel>(B)\<parallel>)" by simp
+next
+  have "\<parallel>(B)\<parallel> \<equiv> lfp (NEGn B \<circ> NEGc B)" by simp
+  then have "\<parallel>(B)\<parallel> = (NEGn B \<circ> NEGc B) (\<parallel>(B)\<parallel>)" using mono_NEGn_NEGc def_lfp_unfold by blast
+  then show "\<parallel>(B)\<parallel> = NEGn B (\<parallel><B>\<parallel>)" by simp
+qed
+
+lemma NEG_elim:
+  shows "M \<in> \<parallel><B>\<parallel> \<Longrightarrow> M \<in> NEGc B (\<parallel>(B)\<parallel>)"
+  and   "N \<in> \<parallel>(B)\<parallel> \<Longrightarrow> N \<in> NEGn B (\<parallel><B>\<parallel>)"
+using NEG_simp by (blast)+
+
+lemma NEG_intro:
+  shows "M \<in> NEGc B (\<parallel>(B)\<parallel>) \<Longrightarrow> M \<in> \<parallel><B>\<parallel>"
+  and   "N \<in> NEGn B (\<parallel><B>\<parallel>) \<Longrightarrow> N \<in> \<parallel>(B)\<parallel>"
+using NEG_simp by (blast)+
+
+lemma NEGc_simps:
+  shows "NEGc (PR A) (\<parallel>(PR A)\<parallel>) = AXIOMSc (PR A) \<union> BINDINGc (PR A) (\<parallel>(PR A)\<parallel>)"  
+  and   "NEGc (NOT C) (\<parallel>(NOT C)\<parallel>) = AXIOMSc (NOT C) \<union> BINDINGc (NOT C) (\<parallel>(NOT C)\<parallel>) 
+                                        \<union> (NOTRIGHT (NOT C) (\<parallel>(C)\<parallel>))"  
+  and   "NEGc (C AND D) (\<parallel>(C AND D)\<parallel>) = AXIOMSc (C AND D) \<union> BINDINGc (C AND D) (\<parallel>(C AND D)\<parallel>) 
+                                        \<union> (ANDRIGHT (C AND D) (\<parallel><C>\<parallel>) (\<parallel><D>\<parallel>))"
+  and   "NEGc (C OR D) (\<parallel>(C OR D)\<parallel>) = AXIOMSc (C OR D) \<union> BINDINGc (C OR D)  (\<parallel>(C OR D)\<parallel>)
+                                        \<union> (ORRIGHT1 (C OR D) (\<parallel><C>\<parallel>)) \<union> (ORRIGHT2 (C OR D) (\<parallel><D>\<parallel>))"
+  and   "NEGc (C IMP D) (\<parallel>(C IMP D)\<parallel>) = AXIOMSc (C IMP D) \<union> BINDINGc (C IMP D) (\<parallel>(C IMP D)\<parallel>) 
+          \<union> (IMPRIGHT (C IMP D) (\<parallel>(C)\<parallel>) (\<parallel><D>\<parallel>) (\<parallel>(D)\<parallel>) (\<parallel><C>\<parallel>))"
+by (simp_all only: NEGc.simps)
+
+lemma AXIOMS_in_CANDs:
+  shows "AXIOMSn B \<subseteq> (\<parallel>(B)\<parallel>)"
+  and   "AXIOMSc B \<subseteq> (\<parallel><B>\<parallel>)"
+proof -
+  have "AXIOMSn B \<subseteq> NEGn B (\<parallel><B>\<parallel>)"
+    by (nominal_induct B rule: ty.induct) (auto)
+  then show "AXIOMSn B \<subseteq> \<parallel>(B)\<parallel>" using NEG_simp by blast
+next
+  have "AXIOMSc B \<subseteq> NEGc B (\<parallel>(B)\<parallel>)"
+    by (nominal_induct B rule: ty.induct) (auto)
+  then show "AXIOMSc B \<subseteq> \<parallel><B>\<parallel>" using NEG_simp by blast
+qed
+
+lemma Ax_in_CANDs:
+  shows "(y):Ax x a \<in> \<parallel>(B)\<parallel>"
+  and   "<b>:Ax x a \<in> \<parallel><B>\<parallel>"
+proof -
+  have "(y):Ax x a \<in> AXIOMSn B" by (auto simp add: AXIOMSn_def)
+  also have "AXIOMSn B \<subseteq> \<parallel>(B)\<parallel>" by (rule AXIOMS_in_CANDs)
+  finally show "(y):Ax x a \<in> \<parallel>(B)\<parallel>" by simp
+next
+  have "<b>:Ax x a \<in> AXIOMSc B" by (auto simp add: AXIOMSc_def)
+  also have "AXIOMSc B \<subseteq> \<parallel><B>\<parallel>" by (rule AXIOMS_in_CANDs)
+  finally show "<b>:Ax x a \<in> \<parallel><B>\<parallel>" by simp
+qed
+
+lemma AXIOMS_eqvt_aux_name:
+  fixes pi::"name prm"
+  shows "M \<in> AXIOMSn B \<Longrightarrow> (pi\<bullet>M) \<in> AXIOMSn B" 
+  and   "N \<in> AXIOMSc B \<Longrightarrow> (pi\<bullet>N) \<in> AXIOMSc B"
+apply(auto simp add: AXIOMSn_def AXIOMSc_def)
+apply(rule_tac x="pi\<bullet>x" in exI)
+apply(rule_tac x="pi\<bullet>y" in exI)
+apply(rule_tac x="pi\<bullet>b" in exI)
+apply(simp)
+apply(rule_tac x="pi\<bullet>a" in exI)
+apply(rule_tac x="pi\<bullet>y" in exI)
+apply(rule_tac x="pi\<bullet>b" in exI)
+apply(simp)
+done
+
+lemma AXIOMS_eqvt_aux_coname:
+  fixes pi::"coname prm"
+  shows "M \<in> AXIOMSn B \<Longrightarrow> (pi\<bullet>M) \<in> AXIOMSn B" 
+  and   "N \<in> AXIOMSc B \<Longrightarrow> (pi\<bullet>N) \<in> AXIOMSc B"
+apply(auto simp add: AXIOMSn_def AXIOMSc_def)
+apply(rule_tac x="pi\<bullet>x" in exI)
+apply(rule_tac x="pi\<bullet>y" in exI)
+apply(rule_tac x="pi\<bullet>b" in exI)
+apply(simp)
+apply(rule_tac x="pi\<bullet>a" in exI)
+apply(rule_tac x="pi\<bullet>y" in exI)
+apply(rule_tac x="pi\<bullet>b" in exI)
+apply(simp)
+done
+
+lemma AXIOMS_eqvt_name:
+  fixes pi::"name prm"
+  shows "(pi\<bullet>AXIOMSn B) = AXIOMSn B" 
+  and   "(pi\<bullet>AXIOMSc B) = AXIOMSc B"
+apply(auto)
+apply(simp add: pt_set_bij1a[OF pt_name_inst, OF at_name_inst])
+apply(drule_tac pi="pi" in AXIOMS_eqvt_aux_name(1))
+apply(perm_simp)
+apply(drule_tac pi="rev pi" in AXIOMS_eqvt_aux_name(1))
+apply(simp add: pt_set_bij1[OF pt_name_inst, OF at_name_inst])
+apply(simp add: pt_set_bij1a[OF pt_name_inst, OF at_name_inst])
+apply(drule_tac pi="pi" in AXIOMS_eqvt_aux_name(2))
+apply(perm_simp)
+apply(drule_tac pi="rev pi" in AXIOMS_eqvt_aux_name(2))
+apply(simp add: pt_set_bij1[OF pt_name_inst, OF at_name_inst])
+done
+
+lemma AXIOMS_eqvt_coname:
+  fixes pi::"coname prm"
+  shows "(pi\<bullet>AXIOMSn B) = AXIOMSn B" 
+  and   "(pi\<bullet>AXIOMSc B) = AXIOMSc B"
+apply(auto)
+apply(simp add: pt_set_bij1a[OF pt_coname_inst, OF at_coname_inst])
+apply(drule_tac pi="pi" in AXIOMS_eqvt_aux_coname(1))
+apply(perm_simp)
+apply(drule_tac pi="rev pi" in AXIOMS_eqvt_aux_coname(1))
+apply(simp add: pt_set_bij1[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: pt_set_bij1a[OF pt_coname_inst, OF at_coname_inst])
+apply(drule_tac pi="pi" in AXIOMS_eqvt_aux_coname(2))
+apply(perm_simp)
+apply(drule_tac pi="rev pi" in AXIOMS_eqvt_aux_coname(2))
+apply(simp add: pt_set_bij1[OF pt_coname_inst, OF at_coname_inst])
+done
+
+lemma BINDING_eqvt_name:
+  fixes pi::"name prm"
+  shows "(pi\<bullet>(BINDINGn B X)) = BINDINGn B (pi\<bullet>X)" 
+  and   "(pi\<bullet>(BINDINGc B Y)) = BINDINGc B (pi\<bullet>Y)" 
+apply(auto simp add: BINDINGn_def BINDINGc_def perm_set_def)
+apply(rule_tac x="pi\<bullet>xb" in exI)
+apply(rule_tac x="pi\<bullet>M" in exI)
+apply(simp)
+apply(auto)[1]
+apply(drule_tac x="(rev pi)\<bullet>a" in spec)
+apply(drule_tac x="(rev pi)\<bullet>P" in spec)
+apply(drule mp)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst, OF at_name_inst])
+apply(simp)
+apply(drule_tac ?pi1.0="pi" in SNa_eqvt(1))
+apply(perm_simp add: nsubst_eqvt)
+apply(rule_tac x="(rev pi\<bullet>xa):(rev pi\<bullet>M)" in exI)
+apply(perm_simp)
+apply(rule_tac x="rev pi\<bullet>xa" in exI)
+apply(rule_tac x="rev pi\<bullet>M" in exI)
+apply(simp)
+apply(auto)[1]
+apply(drule_tac x="pi\<bullet>a" in spec)
+apply(drule_tac x="pi\<bullet>P" in spec)
+apply(drule mp)
+apply(force)
+apply(drule_tac ?pi1.0="rev pi" in SNa_eqvt(1))
+apply(perm_simp add: nsubst_eqvt)
+apply(rule_tac x="pi\<bullet>a" in exI)
+apply(rule_tac x="pi\<bullet>M" in exI)
+apply(simp)
+apply(auto)[1]
+apply(drule_tac x="(rev pi)\<bullet>x" in spec)
+apply(drule_tac x="(rev pi)\<bullet>P" in spec)
+apply(drule mp)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst, OF at_name_inst])
+apply(simp)
+apply(drule_tac ?pi1.0="pi" in SNa_eqvt(1))
+apply(perm_simp add: csubst_eqvt)
+apply(rule_tac x="<(rev pi\<bullet>a)>:(rev pi\<bullet>M)" in exI)
+apply(perm_simp)
+apply(rule_tac x="rev pi\<bullet>a" in exI)
+apply(rule_tac x="rev pi\<bullet>M" in exI)
+apply(simp)
+apply(auto)[1]
+apply(drule_tac x="pi\<bullet>x" in spec)
+apply(drule_tac x="pi\<bullet>P" in spec)
+apply(drule mp)
+apply(force)
+apply(drule_tac ?pi1.0="rev pi" in SNa_eqvt(1))
+apply(perm_simp add: csubst_eqvt)
+done
+
+lemma BINDING_eqvt_coname:
+  fixes pi::"coname prm"
+  shows "(pi\<bullet>(BINDINGn B X)) = BINDINGn B (pi\<bullet>X)" 
+  and   "(pi\<bullet>(BINDINGc B Y)) = BINDINGc B (pi\<bullet>Y)" 
+apply(auto simp add: BINDINGn_def BINDINGc_def perm_set_def)
+apply(rule_tac x="pi\<bullet>xb" in exI)
+apply(rule_tac x="pi\<bullet>M" in exI)
+apply(simp)
+apply(auto)[1]
+apply(drule_tac x="(rev pi)\<bullet>a" in spec)
+apply(drule_tac x="(rev pi)\<bullet>P" in spec)
+apply(drule mp)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst, OF at_coname_inst])
+apply(simp)
+apply(drule_tac ?pi2.0="pi" in SNa_eqvt(2))
+apply(perm_simp add: nsubst_eqvt)
+apply(rule_tac x="(rev pi\<bullet>xa):(rev pi\<bullet>M)" in exI)
+apply(perm_simp)
+apply(rule_tac x="rev pi\<bullet>xa" in exI)
+apply(rule_tac x="rev pi\<bullet>M" in exI)
+apply(simp)
+apply(auto)[1]
+apply(drule_tac x="pi\<bullet>a" in spec)
+apply(drule_tac x="pi\<bullet>P" in spec)
+apply(drule mp)
+apply(force)
+apply(drule_tac ?pi2.0="rev pi" in SNa_eqvt(2))
+apply(perm_simp add: nsubst_eqvt)
+apply(rule_tac x="pi\<bullet>a" in exI)
+apply(rule_tac x="pi\<bullet>M" in exI)
+apply(simp)
+apply(auto)[1]
+apply(drule_tac x="(rev pi)\<bullet>x" in spec)
+apply(drule_tac x="(rev pi)\<bullet>P" in spec)
+apply(drule mp)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst, OF at_coname_inst])
+apply(simp)
+apply(drule_tac ?pi2.0="pi" in SNa_eqvt(2))
+apply(perm_simp add: csubst_eqvt)
+apply(rule_tac x="<(rev pi\<bullet>a)>:(rev pi\<bullet>M)" in exI)
+apply(perm_simp)
+apply(rule_tac x="rev pi\<bullet>a" in exI)
+apply(rule_tac x="rev pi\<bullet>M" in exI)
+apply(simp)
+apply(auto)[1]
+apply(drule_tac x="pi\<bullet>x" in spec)
+apply(drule_tac x="pi\<bullet>P" in spec)
+apply(drule mp)
+apply(force)
+apply(drule_tac ?pi2.0="rev pi" in SNa_eqvt(2))
+apply(perm_simp add: csubst_eqvt)
+done
+
+lemma CAND_eqvt_name:
+  fixes pi::"name prm"
+  shows   "(pi\<bullet>(\<parallel>(B)\<parallel>)) = (\<parallel>(B)\<parallel>)"
+  and     "(pi\<bullet>(\<parallel><B>\<parallel>)) = (\<parallel><B>\<parallel>)"
+proof (nominal_induct B rule: ty.induct)
+  case (PR X)
+  { case 1 show ?case 
+      apply -
+      apply(simp add: lfp_eqvt)
+      apply(simp add: perm_fun_def)
+      apply(simp add: union_eqvt AXIOMS_eqvt_name BINDING_eqvt_name)
+      apply(perm_simp)
+    done
+  next
+    case 2 show ?case
+      apply -
+      apply(simp only: NEGc_simps)
+      apply(simp add: union_eqvt AXIOMS_eqvt_name BINDING_eqvt_name)
+      apply(simp add: lfp_eqvt)
+      apply(simp add: comp_def)
+      apply(simp add: perm_fun_def)
+      apply(simp add: union_eqvt AXIOMS_eqvt_name BINDING_eqvt_name)
+      apply(perm_simp)
+      done
+  }
+next
+  case (NOT B)
+  have ih1: "pi\<bullet>(\<parallel>(B)\<parallel>) = (\<parallel>(B)\<parallel>)" by fact
+  have ih2: "pi\<bullet>(\<parallel><B>\<parallel>) = (\<parallel><B>\<parallel>)" by fact
+  have g: "pi\<bullet>(\<parallel>(NOT B)\<parallel>) = (\<parallel>(NOT B)\<parallel>)"
+    apply -
+    apply(simp only: lfp_eqvt)
+    apply(simp only: comp_def)
+    apply(simp only: perm_fun_def)
+    apply(simp only: NEGc.simps NEGn.simps)
+    apply(simp only: union_eqvt AXIOMS_eqvt_name BINDING_eqvt_name NOTRIGHT_eqvt_name NOTLEFT_eqvt_name)
+    apply(perm_simp add: ih1 ih2)
+    done
+  { case 1 show ?case by (rule g)
+  next 
+    case 2 show ?case
+      by (simp only: NEGc_simps union_eqvt AXIOMS_eqvt_name BINDING_eqvt_name NOTRIGHT_eqvt_name ih1 ih2 g)
+  }
+next
+  case (AND A B)
+  have ih1: "pi\<bullet>(\<parallel>(A)\<parallel>) = (\<parallel>(A)\<parallel>)" by fact
+  have ih2: "pi\<bullet>(\<parallel><A>\<parallel>) = (\<parallel><A>\<parallel>)" by fact
+  have ih3: "pi\<bullet>(\<parallel>(B)\<parallel>) = (\<parallel>(B)\<parallel>)" by fact
+  have ih4: "pi\<bullet>(\<parallel><B>\<parallel>) = (\<parallel><B>\<parallel>)" by fact
+  have g: "pi\<bullet>(\<parallel>(A AND B)\<parallel>) = (\<parallel>(A AND B)\<parallel>)"
+    apply -
+    apply(simp only: lfp_eqvt)
+    apply(simp only: comp_def)
+    apply(simp only: perm_fun_def)
+    apply(simp only: NEGc.simps NEGn.simps)
+    apply(simp only: union_eqvt AXIOMS_eqvt_name BINDING_eqvt_name ANDRIGHT_eqvt_name 
+                     ANDLEFT2_eqvt_name ANDLEFT1_eqvt_name)
+    apply(perm_simp add: ih1 ih2 ih3 ih4)
+    done
+  { case 1 show ?case by (rule g)
+  next 
+    case 2 show ?case
+      by (simp only: NEGc_simps union_eqvt AXIOMS_eqvt_name BINDING_eqvt_name 
+                     ANDRIGHT_eqvt_name ANDLEFT1_eqvt_name ANDLEFT2_eqvt_name ih1 ih2 ih3 ih4 g)
+  }
+next
+  case (OR A B)
+  have ih1: "pi\<bullet>(\<parallel>(A)\<parallel>) = (\<parallel>(A)\<parallel>)" by fact
+  have ih2: "pi\<bullet>(\<parallel><A>\<parallel>) = (\<parallel><A>\<parallel>)" by fact
+  have ih3: "pi\<bullet>(\<parallel>(B)\<parallel>) = (\<parallel>(B)\<parallel>)" by fact
+  have ih4: "pi\<bullet>(\<parallel><B>\<parallel>) = (\<parallel><B>\<parallel>)" by fact
+  have g: "pi\<bullet>(\<parallel>(A OR B)\<parallel>) = (\<parallel>(A OR B)\<parallel>)"
+    apply -
+    apply(simp only: lfp_eqvt)
+    apply(simp only: comp_def)
+    apply(simp only: perm_fun_def)
+    apply(simp only: NEGc.simps NEGn.simps)
+    apply(simp only: union_eqvt AXIOMS_eqvt_name BINDING_eqvt_name ORRIGHT1_eqvt_name 
+                     ORRIGHT2_eqvt_name ORLEFT_eqvt_name)
+    apply(perm_simp add: ih1 ih2 ih3 ih4)
+    done
+  { case 1 show ?case by (rule g)
+  next 
+    case 2 show ?case
+      by (simp only: NEGc_simps union_eqvt AXIOMS_eqvt_name BINDING_eqvt_name 
+                     ORRIGHT1_eqvt_name ORRIGHT2_eqvt_name ORLEFT_eqvt_name ih1 ih2 ih3 ih4 g)
+  }
+next
+  case (IMP A B)
+  have ih1: "pi\<bullet>(\<parallel>(A)\<parallel>) = (\<parallel>(A)\<parallel>)" by fact
+  have ih2: "pi\<bullet>(\<parallel><A>\<parallel>) = (\<parallel><A>\<parallel>)" by fact
+  have ih3: "pi\<bullet>(\<parallel>(B)\<parallel>) = (\<parallel>(B)\<parallel>)" by fact
+  have ih4: "pi\<bullet>(\<parallel><B>\<parallel>) = (\<parallel><B>\<parallel>)" by fact
+  have g: "pi\<bullet>(\<parallel>(A IMP B)\<parallel>) = (\<parallel>(A IMP B)\<parallel>)"
+    apply -
+    apply(simp only: lfp_eqvt)
+    apply(simp only: comp_def)
+    apply(simp only: perm_fun_def)
+    apply(simp only: NEGc.simps NEGn.simps)
+    apply(simp only: union_eqvt AXIOMS_eqvt_name BINDING_eqvt_name IMPRIGHT_eqvt_name IMPLEFT_eqvt_name)
+    apply(perm_simp add: ih1 ih2 ih3 ih4)
+    done
+  { case 1 show ?case by (rule g)
+  next 
+    case 2 show ?case
+      by (simp only: NEGc_simps union_eqvt AXIOMS_eqvt_name BINDING_eqvt_name 
+                     IMPRIGHT_eqvt_name IMPLEFT_eqvt_name ih1 ih2 ih3 ih4 g)
+  }
+qed
+
+lemma CAND_eqvt_coname:
+  fixes pi::"coname prm"
+  shows   "(pi\<bullet>(\<parallel>(B)\<parallel>)) = (\<parallel>(B)\<parallel>)"
+  and     "(pi\<bullet>(\<parallel><B>\<parallel>)) = (\<parallel><B>\<parallel>)"
+proof (nominal_induct B rule: ty.induct)
+  case (PR X)
+  { case 1 show ?case 
+      apply -
+      apply(simp add: lfp_eqvt)
+      apply(simp add: perm_fun_def)
+      apply(simp add: union_eqvt AXIOMS_eqvt_coname BINDING_eqvt_coname)
+      apply(perm_simp)
+    done
+  next
+    case 2 show ?case
+      apply -
+      apply(simp only: NEGc_simps)
+      apply(simp add: union_eqvt AXIOMS_eqvt_coname BINDING_eqvt_coname)
+      apply(simp add: lfp_eqvt)
+      apply(simp add: comp_def)
+      apply(simp add: perm_fun_def)
+      apply(simp add: union_eqvt AXIOMS_eqvt_coname BINDING_eqvt_coname)
+      apply(perm_simp)
+      done
+  }
+next
+  case (NOT B)
+  have ih1: "pi\<bullet>(\<parallel>(B)\<parallel>) = (\<parallel>(B)\<parallel>)" by fact
+  have ih2: "pi\<bullet>(\<parallel><B>\<parallel>) = (\<parallel><B>\<parallel>)" by fact
+  have g: "pi\<bullet>(\<parallel>(NOT B)\<parallel>) = (\<parallel>(NOT B)\<parallel>)"
+    apply -
+    apply(simp only: lfp_eqvt)
+    apply(simp only: comp_def)
+    apply(simp only: perm_fun_def)
+    apply(simp only: NEGc.simps NEGn.simps)
+    apply(simp only: union_eqvt AXIOMS_eqvt_coname BINDING_eqvt_coname 
+            NOTRIGHT_eqvt_coname NOTLEFT_eqvt_coname)
+    apply(perm_simp add: ih1 ih2)
+    done
+  { case 1 show ?case by (rule g)
+  next 
+    case 2 show ?case
+      by (simp only: NEGc_simps union_eqvt AXIOMS_eqvt_coname BINDING_eqvt_coname 
+              NOTRIGHT_eqvt_coname ih1 ih2 g)
+  }
+next
+  case (AND A B)
+  have ih1: "pi\<bullet>(\<parallel>(A)\<parallel>) = (\<parallel>(A)\<parallel>)" by fact
+  have ih2: "pi\<bullet>(\<parallel><A>\<parallel>) = (\<parallel><A>\<parallel>)" by fact
+  have ih3: "pi\<bullet>(\<parallel>(B)\<parallel>) = (\<parallel>(B)\<parallel>)" by fact
+  have ih4: "pi\<bullet>(\<parallel><B>\<parallel>) = (\<parallel><B>\<parallel>)" by fact
+  have g: "pi\<bullet>(\<parallel>(A AND B)\<parallel>) = (\<parallel>(A AND B)\<parallel>)"
+    apply -
+    apply(simp only: lfp_eqvt)
+    apply(simp only: comp_def)
+    apply(simp only: perm_fun_def)
+    apply(simp only: NEGc.simps NEGn.simps)
+    apply(simp only: union_eqvt AXIOMS_eqvt_coname BINDING_eqvt_coname ANDRIGHT_eqvt_coname 
+                     ANDLEFT2_eqvt_coname ANDLEFT1_eqvt_coname)
+    apply(perm_simp add: ih1 ih2 ih3 ih4)
+    done
+  { case 1 show ?case by (rule g)
+  next 
+    case 2 show ?case
+      by (simp only: NEGc_simps union_eqvt AXIOMS_eqvt_coname BINDING_eqvt_coname 
+                     ANDRIGHT_eqvt_coname ANDLEFT1_eqvt_coname ANDLEFT2_eqvt_coname ih1 ih2 ih3 ih4 g)
+  }
+next
+  case (OR A B)
+  have ih1: "pi\<bullet>(\<parallel>(A)\<parallel>) = (\<parallel>(A)\<parallel>)" by fact
+  have ih2: "pi\<bullet>(\<parallel><A>\<parallel>) = (\<parallel><A>\<parallel>)" by fact
+  have ih3: "pi\<bullet>(\<parallel>(B)\<parallel>) = (\<parallel>(B)\<parallel>)" by fact
+  have ih4: "pi\<bullet>(\<parallel><B>\<parallel>) = (\<parallel><B>\<parallel>)" by fact
+  have g: "pi\<bullet>(\<parallel>(A OR B)\<parallel>) = (\<parallel>(A OR B)\<parallel>)"
+    apply -
+    apply(simp only: lfp_eqvt)
+    apply(simp only: comp_def)
+    apply(simp only: perm_fun_def)
+    apply(simp only: NEGc.simps NEGn.simps)
+    apply(simp only: union_eqvt AXIOMS_eqvt_coname BINDING_eqvt_coname ORRIGHT1_eqvt_coname 
+                     ORRIGHT2_eqvt_coname ORLEFT_eqvt_coname)
+    apply(perm_simp add: ih1 ih2 ih3 ih4)
+    done
+  { case 1 show ?case by (rule g)
+  next 
+    case 2 show ?case
+      by (simp only: NEGc_simps union_eqvt AXIOMS_eqvt_coname BINDING_eqvt_coname 
+                     ORRIGHT1_eqvt_coname ORRIGHT2_eqvt_coname ORLEFT_eqvt_coname ih1 ih2 ih3 ih4 g)
+  }
+next
+  case (IMP A B)
+  have ih1: "pi\<bullet>(\<parallel>(A)\<parallel>) = (\<parallel>(A)\<parallel>)" by fact
+  have ih2: "pi\<bullet>(\<parallel><A>\<parallel>) = (\<parallel><A>\<parallel>)" by fact
+  have ih3: "pi\<bullet>(\<parallel>(B)\<parallel>) = (\<parallel>(B)\<parallel>)" by fact
+  have ih4: "pi\<bullet>(\<parallel><B>\<parallel>) = (\<parallel><B>\<parallel>)" by fact
+  have g: "pi\<bullet>(\<parallel>(A IMP B)\<parallel>) = (\<parallel>(A IMP B)\<parallel>)"
+    apply -
+    apply(simp only: lfp_eqvt)
+    apply(simp only: comp_def)
+    apply(simp only: perm_fun_def)
+    apply(simp only: NEGc.simps NEGn.simps)
+    apply(simp only: union_eqvt AXIOMS_eqvt_coname BINDING_eqvt_coname IMPRIGHT_eqvt_coname 
+         IMPLEFT_eqvt_coname)
+    apply(perm_simp add: ih1 ih2 ih3 ih4)
+    done
+  { case 1 show ?case by (rule g)
+  next 
+    case 2 show ?case
+      by (simp only: NEGc_simps union_eqvt AXIOMS_eqvt_coname BINDING_eqvt_coname 
+                     IMPRIGHT_eqvt_coname IMPLEFT_eqvt_coname ih1 ih2 ih3 ih4 g)
+  }
+qed
+
+text {* Elimination rules for the set-operators *}
+
+lemma BINDINGc_elim:
+  assumes a: "<a>:M \<in> BINDINGc B (\<parallel>(B)\<parallel>)"
+  shows "\<forall>x P. ((x):P)\<in>(\<parallel>(B)\<parallel>) \<longrightarrow> SNa (M{a:=(x).P})"
+using a
+apply(auto simp add: BINDINGc_def)
+apply(auto simp add: ctrm.inject alpha)
+apply(drule_tac x="[(a,aa)]\<bullet>x" in spec)
+apply(drule_tac x="[(a,aa)]\<bullet>P" in spec)
+apply(drule mp)
+apply(drule_tac pi="[(a,aa)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_coname)
+apply(drule_tac ?pi2.0="[(a,aa)]" in SNa_eqvt(2))
+apply(perm_simp add: csubst_eqvt)
+done
+
+lemma BINDINGn_elim:
+  assumes a: "(x):M \<in> BINDINGn B (\<parallel><B>\<parallel>)"
+  shows "\<forall>c P. (<c>:P)\<in>(\<parallel><B>\<parallel>) \<longrightarrow> SNa (M{x:=<c>.P})"
+using a
+apply(auto simp add: BINDINGn_def)
+apply(auto simp add: ntrm.inject alpha)
+apply(drule_tac x="[(x,xa)]\<bullet>c" in spec)
+apply(drule_tac x="[(x,xa)]\<bullet>P" in spec)
+apply(drule mp)
+apply(drule_tac pi="[(x,xa)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name)
+apply(drule_tac ?pi1.0="[(x,xa)]" in SNa_eqvt(1))
+apply(perm_simp add: nsubst_eqvt)
+done
+
+lemma NOTRIGHT_elim:
+  assumes a: "<a>:M \<in> NOTRIGHT (NOT B) (\<parallel>(B)\<parallel>)"
+  obtains x' M' where "M = NotR (x').M' a" and "fic (NotR (x').M' a) a" and "(x'):M' \<in> (\<parallel>(B)\<parallel>)"
+using a
+apply(auto simp add: ctrm.inject alpha abs_fresh calc_atm)
+apply(drule_tac x="x" in meta_spec)
+apply(drule_tac x="[(a,aa)]\<bullet>M" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,aa)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,aa)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+done
+
+lemma NOTLEFT_elim:
+  assumes a: "(x):M \<in> NOTLEFT (NOT B) (\<parallel><B>\<parallel>)"
+  obtains a' M' where "M = NotL <a'>.M' x" and "fin (NotL <a'>.M' x) x" and "<a'>:M' \<in> (\<parallel><B>\<parallel>)"
+using a
+apply(auto simp add: ntrm.inject alpha abs_fresh calc_atm)
+apply(drule_tac x="a" in meta_spec)
+apply(drule_tac x="[(x,xa)]\<bullet>M" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,xa)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,xa)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+done
+
+lemma ANDRIGHT_elim:
+  assumes a: "<a>:M \<in> ANDRIGHT (B AND C) (\<parallel><B>\<parallel>) (\<parallel><C>\<parallel>)"
+  obtains d' M' e' N' where "M = AndR <d'>.M' <e'>.N' a" and "fic (AndR <d'>.M' <e'>.N' a) a" 
+                      and "<d'>:M' \<in> (\<parallel><B>\<parallel>)" and "<e'>:N' \<in> (\<parallel><C>\<parallel>)"
+using a
+apply(auto simp add: ctrm.inject alpha abs_fresh calc_atm fresh_atm)
+apply(drule_tac x="c" in meta_spec)
+apply(drule_tac x="[(a,c)]\<bullet>M" in meta_spec)
+apply(drule_tac x="c" in meta_spec)
+apply(drule_tac x="[(a,c)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,c)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,c)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,c)]" and x="<a>:N" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+apply(case_tac "a=b")
+apply(simp)
+apply(drule_tac x="c" in meta_spec)
+apply(drule_tac x="[(b,c)]\<bullet>M" in meta_spec)
+apply(drule_tac x="c" in meta_spec)
+apply(drule_tac x="[(b,c)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(b,c)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(b,c)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(drule meta_mp)
+apply(drule_tac pi="[(b,c)]" and x="<b>:N" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+apply(simp)
+apply(case_tac "c=b")
+apply(simp)
+apply(drule_tac x="b" in meta_spec)
+apply(drule_tac x="[(a,b)]\<bullet>M" in meta_spec)
+apply(drule_tac x="a" in meta_spec)
+apply(drule_tac x="[(a,b)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,b)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,b)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,b)]" and x="<b>:N" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+apply(simp)
+apply(drule_tac x="c" in meta_spec)
+apply(drule_tac x="[(a,c)]\<bullet>M" in meta_spec)
+apply(drule_tac x="b" in meta_spec)
+apply(drule_tac x="[(a,c)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,c)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,c)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,c)]" and x="<b>:N" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+apply(case_tac "a=aa")
+apply(simp)
+apply(drule_tac x="c" in meta_spec)
+apply(drule_tac x="[(aa,c)]\<bullet>M" in meta_spec)
+apply(drule_tac x="c" in meta_spec)
+apply(drule_tac x="[(aa,c)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(aa,c)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(aa,c)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(drule meta_mp)
+apply(drule_tac pi="[(aa,c)]" and x="<aa>:N" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+apply(simp)
+apply(case_tac "c=aa")
+apply(simp)
+apply(drule_tac x="a" in meta_spec)
+apply(drule_tac x="[(a,aa)]\<bullet>M" in meta_spec)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="[(a,aa)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,aa)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,aa)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,aa)]" and x="<a>:N" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+apply(simp)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="[(a,c)]\<bullet>M" in meta_spec)
+apply(drule_tac x="c" in meta_spec)
+apply(drule_tac x="[(a,c)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,c)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,c)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,c)]" and x="<a>:N" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+apply(case_tac "a=aa")
+apply(simp)
+apply(case_tac "aa=b")
+apply(simp)
+apply(drule_tac x="c" in meta_spec)
+apply(drule_tac x="[(b,c)]\<bullet>M" in meta_spec)
+apply(drule_tac x="c" in meta_spec)
+apply(drule_tac x="[(b,c)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(b,c)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(b,c)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(drule meta_mp)
+apply(drule_tac pi="[(b,c)]" and x="<b>:N" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+apply(simp)
+apply(case_tac "c=b")
+apply(simp)
+apply(drule_tac x="b" in meta_spec)
+apply(drule_tac x="[(aa,b)]\<bullet>M" in meta_spec)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="[(aa,b)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(aa,b)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(aa,b)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(drule meta_mp)
+apply(drule_tac pi="[(aa,b)]" and x="<b>:N" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+apply(simp)
+apply(drule_tac x="c" in meta_spec)
+apply(drule_tac x="[(aa,c)]\<bullet>M" in meta_spec)
+apply(drule_tac x="b" in meta_spec)
+apply(drule_tac x="[(aa,c)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(aa,c)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(aa,c)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(drule meta_mp)
+apply(drule_tac pi="[(aa,c)]" and x="<b>:N" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+apply(simp)
+apply(case_tac "c=aa")
+apply(simp)
+apply(case_tac "a=b")
+apply(simp)
+apply(drule_tac x="b" in meta_spec)
+apply(drule_tac x="[(b,aa)]\<bullet>M" in meta_spec)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="[(b,aa)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(b,aa)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(b,aa)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(drule meta_mp)
+apply(drule_tac pi="[(b,aa)]" and x="<b>:N" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+apply(simp)
+apply(case_tac "aa=b")
+apply(simp)
+apply(drule_tac x="a" in meta_spec)
+apply(drule_tac x="[(a,b)]\<bullet>M" in meta_spec)
+apply(drule_tac x="a" in meta_spec)
+apply(drule_tac x="[(a,b)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,b)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,b)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,b)]" and x="<b>:N" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+apply(simp)
+apply(drule_tac x="a" in meta_spec)
+apply(drule_tac x="[(a,aa)]\<bullet>M" in meta_spec)
+apply(drule_tac x="b" in meta_spec)
+apply(drule_tac x="[(a,aa)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,aa)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,aa)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,aa)]" and x="<b>:N" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+apply(simp)
+apply(case_tac "a=b")
+apply(simp)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="[(b,c)]\<bullet>M" in meta_spec)
+apply(drule_tac x="c" in meta_spec)
+apply(drule_tac x="[(b,c)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(b,c)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(b,c)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(drule meta_mp)
+apply(drule_tac pi="[(b,c)]" and x="<b>:N" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+apply(simp)
+apply(case_tac "c=b")
+apply(simp)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="[(a,b)]\<bullet>M" in meta_spec)
+apply(drule_tac x="a" in meta_spec)
+apply(drule_tac x="[(a,b)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,b)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,b)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,b)]" and x="<b>:N" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+apply(simp)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="[(a,c)]\<bullet>M" in meta_spec)
+apply(drule_tac x="b" in meta_spec)
+apply(drule_tac x="[(a,c)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,c)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,c)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,c)]" and x="<b>:N" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+done 
+
+lemma ANDLEFT1_elim:
+  assumes a: "(x):M \<in> ANDLEFT1 (B AND C) (\<parallel>(B)\<parallel>)"
+  obtains x' M' where "M = AndL1 (x').M' x" and "fin (AndL1 (x').M' x) x" and "(x'):M' \<in> (\<parallel>(B)\<parallel>)"
+using a
+apply(auto simp add: ntrm.inject alpha abs_fresh calc_atm)
+apply(drule_tac x="y" in meta_spec)
+apply(drule_tac x="[(x,y)]\<bullet>M" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,y)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,y)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+apply(case_tac "x=xa")
+apply(simp)
+apply(drule_tac x="y" in meta_spec)
+apply(drule_tac x="[(xa,y)]\<bullet>M" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(xa,y)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(xa,y)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+apply(simp)
+apply(case_tac "y=xa")
+apply(simp)
+apply(drule_tac x="x" in meta_spec)
+apply(drule_tac x="[(x,xa)]\<bullet>M" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,xa)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,xa)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+apply(simp)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="[(x,y)]\<bullet>M" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,y)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,y)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+done
+
+lemma ANDLEFT2_elim:
+  assumes a: "(x):M \<in> ANDLEFT2 (B AND C) (\<parallel>(C)\<parallel>)"
+  obtains x' M' where "M = AndL2 (x').M' x" and "fin (AndL2 (x').M' x) x" and "(x'):M' \<in> (\<parallel>(C)\<parallel>)"
+using a
+apply(auto simp add: ntrm.inject alpha abs_fresh calc_atm)
+apply(drule_tac x="y" in meta_spec)
+apply(drule_tac x="[(x,y)]\<bullet>M" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,y)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,y)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+apply(case_tac "x=xa")
+apply(simp)
+apply(drule_tac x="y" in meta_spec)
+apply(drule_tac x="[(xa,y)]\<bullet>M" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(xa,y)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(xa,y)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+apply(simp)
+apply(case_tac "y=xa")
+apply(simp)
+apply(drule_tac x="x" in meta_spec)
+apply(drule_tac x="[(x,xa)]\<bullet>M" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,xa)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,xa)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+apply(simp)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="[(x,y)]\<bullet>M" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,y)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,y)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+done
+
+lemma ORRIGHT1_elim:
+  assumes a: "<a>:M \<in> ORRIGHT1 (B OR C) (\<parallel><B>\<parallel>)"
+  obtains a' M' where "M = OrR1 <a'>.M' a" and "fic (OrR1 <a'>.M' a) a" and "<a'>:M' \<in> (\<parallel><B>\<parallel>)"
+using a
+apply(auto simp add: ctrm.inject alpha abs_fresh calc_atm)
+apply(drule_tac x="b" in meta_spec)
+apply(drule_tac x="[(a,b)]\<bullet>M" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,b)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,b)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+apply(case_tac "a=aa")
+apply(simp)
+apply(drule_tac x="b" in meta_spec)
+apply(drule_tac x="[(aa,b)]\<bullet>M" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(aa,b)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(aa,b)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+apply(simp)
+apply(case_tac "b=aa")
+apply(simp)
+apply(drule_tac x="a" in meta_spec)
+apply(drule_tac x="[(a,aa)]\<bullet>M" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,aa)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,aa)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+apply(simp)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="[(a,b)]\<bullet>M" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,b)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,b)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+done
+
+lemma ORRIGHT2_elim:
+  assumes a: "<a>:M \<in> ORRIGHT2 (B OR C) (\<parallel><C>\<parallel>)"
+  obtains a' M' where "M = OrR2 <a'>.M' a" and "fic (OrR2 <a'>.M' a) a" and "<a'>:M' \<in> (\<parallel><C>\<parallel>)"
+using a
+apply(auto simp add: ctrm.inject alpha abs_fresh calc_atm)
+apply(drule_tac x="b" in meta_spec)
+apply(drule_tac x="[(a,b)]\<bullet>M" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,b)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,b)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+apply(case_tac "a=aa")
+apply(simp)
+apply(drule_tac x="b" in meta_spec)
+apply(drule_tac x="[(aa,b)]\<bullet>M" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(aa,b)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(aa,b)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+apply(simp)
+apply(case_tac "b=aa")
+apply(simp)
+apply(drule_tac x="a" in meta_spec)
+apply(drule_tac x="[(a,aa)]\<bullet>M" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,aa)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,aa)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+apply(simp)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="[(a,b)]\<bullet>M" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,b)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,b)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(simp)
+done
+
+lemma ORLEFT_elim:
+  assumes a: "(x):M \<in> ORLEFT (B OR C) (\<parallel>(B)\<parallel>) (\<parallel>(C)\<parallel>)"
+  obtains y' M' z' N' where "M = OrL (y').M' (z').N' x" and "fin (OrL (y').M' (z').N' x) x" 
+                      and "(y'):M' \<in> (\<parallel>(B)\<parallel>)" and "(z'):N' \<in> (\<parallel>(C)\<parallel>)"
+using a
+apply(auto simp add: ntrm.inject alpha abs_fresh calc_atm fresh_atm)
+apply(drule_tac x="z" in meta_spec)
+apply(drule_tac x="[(x,z)]\<bullet>M" in meta_spec)
+apply(drule_tac x="z" in meta_spec)
+apply(drule_tac x="[(x,z)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,z)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,z)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,z)]" and x="(x):N" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+apply(case_tac "x=y")
+apply(simp)
+apply(drule_tac x="z" in meta_spec)
+apply(drule_tac x="[(y,z)]\<bullet>M" in meta_spec)
+apply(drule_tac x="z" in meta_spec)
+apply(drule_tac x="[(y,z)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(y,z)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(y,z)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(drule meta_mp)
+apply(drule_tac pi="[(y,z)]" and x="(y):N" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+apply(simp)
+apply(case_tac "z=y")
+apply(simp)
+apply(drule_tac x="y" in meta_spec)
+apply(drule_tac x="[(x,y)]\<bullet>M" in meta_spec)
+apply(drule_tac x="x" in meta_spec)
+apply(drule_tac x="[(x,y)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,y)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,y)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,y)]" and x="(y):N" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+apply(simp)
+apply(drule_tac x="z" in meta_spec)
+apply(drule_tac x="[(x,z)]\<bullet>M" in meta_spec)
+apply(drule_tac x="y" in meta_spec)
+apply(drule_tac x="[(x,z)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,z)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,z)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,z)]" and x="(y):N" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+apply(case_tac "x=xa")
+apply(simp)
+apply(drule_tac x="z" in meta_spec)
+apply(drule_tac x="[(xa,z)]\<bullet>M" in meta_spec)
+apply(drule_tac x="z" in meta_spec)
+apply(drule_tac x="[(xa,z)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(xa,z)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(xa,z)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(drule meta_mp)
+apply(drule_tac pi="[(xa,z)]" and x="(xa):N" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+apply(simp)
+apply(case_tac "z=xa")
+apply(simp)
+apply(drule_tac x="x" in meta_spec)
+apply(drule_tac x="[(x,xa)]\<bullet>M" in meta_spec)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="[(x,xa)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,xa)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,xa)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,xa)]" and x="(x):N" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+apply(simp)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="[(x,z)]\<bullet>M" in meta_spec)
+apply(drule_tac x="z" in meta_spec)
+apply(drule_tac x="[(x,z)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,z)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,z)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,z)]" and x="(x):N" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+apply(case_tac "x=xa")
+apply(simp)
+apply(case_tac "xa=y")
+apply(simp)
+apply(drule_tac x="z" in meta_spec)
+apply(drule_tac x="[(y,z)]\<bullet>M" in meta_spec)
+apply(drule_tac x="z" in meta_spec)
+apply(drule_tac x="[(y,z)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(y,z)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(y,z)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(drule meta_mp)
+apply(drule_tac pi="[(y,z)]" and x="(y):N" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+apply(simp)
+apply(case_tac "z=y")
+apply(simp)
+apply(drule_tac x="y" in meta_spec)
+apply(drule_tac x="[(xa,y)]\<bullet>M" in meta_spec)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="[(xa,y)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(xa,y)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(xa,y)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(drule meta_mp)
+apply(drule_tac pi="[(xa,y)]" and x="(y):N" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+apply(simp)
+apply(drule_tac x="z" in meta_spec)
+apply(drule_tac x="[(xa,z)]\<bullet>M" in meta_spec)
+apply(drule_tac x="y" in meta_spec)
+apply(drule_tac x="[(xa,z)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(xa,z)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(xa,z)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(drule meta_mp)
+apply(drule_tac pi="[(xa,z)]" and x="(y):N" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+apply(simp)
+apply(case_tac "z=xa")
+apply(simp)
+apply(case_tac "x=y")
+apply(simp)
+apply(drule_tac x="y" in meta_spec)
+apply(drule_tac x="[(y,xa)]\<bullet>M" in meta_spec)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="[(y,xa)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(y,xa)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(y,xa)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(drule meta_mp)
+apply(drule_tac pi="[(y,xa)]" and x="(y):N" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+apply(simp)
+apply(case_tac "xa=y")
+apply(simp)
+apply(drule_tac x="x" in meta_spec)
+apply(drule_tac x="[(x,y)]\<bullet>M" in meta_spec)
+apply(drule_tac x="x" in meta_spec)
+apply(drule_tac x="[(x,y)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,y)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,y)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,y)]" and x="(y):N" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+apply(simp)
+apply(drule_tac x="x" in meta_spec)
+apply(drule_tac x="[(x,xa)]\<bullet>M" in meta_spec)
+apply(drule_tac x="y" in meta_spec)
+apply(drule_tac x="[(x,xa)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,xa)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,xa)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,xa)]" and x="(y):N" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+apply(simp)
+apply(case_tac "x=y")
+apply(simp)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="[(y,z)]\<bullet>M" in meta_spec)
+apply(drule_tac x="z" in meta_spec)
+apply(drule_tac x="[(y,z)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(y,z)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(y,z)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(drule meta_mp)
+apply(drule_tac pi="[(y,z)]" and x="(y):N" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+apply(simp)
+apply(case_tac "z=y")
+apply(simp)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="[(x,y)]\<bullet>M" in meta_spec)
+apply(drule_tac x="x" in meta_spec)
+apply(drule_tac x="[(x,y)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,y)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,y)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,y)]" and x="(y):N" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+apply(simp)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="[(x,z)]\<bullet>M" in meta_spec)
+apply(drule_tac x="y" in meta_spec)
+apply(drule_tac x="[(x,z)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,z)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,z)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,z)]" and x="(y):N" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+done
+
+lemma IMPRIGHT_elim:
+  assumes a: "<a>:M \<in> IMPRIGHT (B IMP C) (\<parallel>(B)\<parallel>) (\<parallel><C>\<parallel>) (\<parallel>(C)\<parallel>) (\<parallel><B>\<parallel>)"
+  obtains x' a' M' where "M = ImpR (x').<a'>.M' a" and "fic (ImpR (x').<a'>.M' a) a" 
+                   and "\<forall>z P. x'\<sharp>(z,P) \<and> (z):P \<in> \<parallel>(C)\<parallel> \<longrightarrow> (x'):(M'{a':=(z).P}) \<in> \<parallel>(B)\<parallel>" 
+                   and "\<forall>c Q. a'\<sharp>(c,Q) \<and> <c>:Q \<in> \<parallel><B>\<parallel> \<longrightarrow> <a'>:(M'{x':=<c>.Q}) \<in> \<parallel><C>\<parallel>"
+using a
+apply(auto simp add: ctrm.inject alpha abs_fresh calc_atm)
+apply(drule_tac x="x" in meta_spec)
+apply(drule_tac x="b" in meta_spec)
+apply(drule_tac x="[(a,b)]\<bullet>M" in meta_spec)
+apply(simp)
+apply(drule_tac pi="[(a,b)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(auto)[1]
+apply(drule_tac pi="[(a,b)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(drule_tac x="z" in spec)
+apply(drule_tac x="[(a,b)]\<bullet>P" in spec)
+apply(simp add: fresh_prod fresh_left calc_atm)
+apply(drule_tac pi="[(a,b)]" and x="(x):M{a:=(z).([(a,b)]\<bullet>P)}" 
+                                     in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(perm_simp add: calc_atm csubst_eqvt CAND_eqvt_coname)
+apply(drule meta_mp)
+apply(auto)[1]
+apply(drule_tac pi="[(a,b)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add:  CAND_eqvt_coname)
+apply(rotate_tac 2)
+apply(drule_tac x="[(a,b)]\<bullet>c" in spec)
+apply(drule_tac x="[(a,b)]\<bullet>Q" in spec)
+apply(simp add: fresh_prod fresh_left)
+apply(drule mp)
+apply(simp add: calc_atm)
+apply(drule_tac pi="[(a,b)]" and x="<a>:M{x:=<([(a,b)]\<bullet>c)>.([(a,b)]\<bullet>Q)}" 
+                                        in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(perm_simp add: nsubst_eqvt CAND_eqvt_coname)
+apply(simp add: calc_atm)
+apply(simp)
+apply(case_tac "a=aa")
+apply(simp)
+apply(drule_tac x="x" in meta_spec)
+apply(drule_tac x="b" in meta_spec)
+apply(drule_tac x="[(aa,b)]\<bullet>M" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(aa,b)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(auto)[1]
+apply(drule_tac pi="[(a,b)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(drule_tac x="z" in spec)
+apply(drule_tac x="[(a,b)]\<bullet>P" in spec)
+apply(simp add: fresh_prod fresh_left calc_atm)
+apply(drule_tac pi="[(a,b)]" and x="(x):M{a:=(z).([(a,b)]\<bullet>P)}" 
+                                     in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(perm_simp add: calc_atm csubst_eqvt  CAND_eqvt_coname)
+apply(drule meta_mp)
+apply(auto)[1]
+apply(drule_tac pi="[(a,b)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_coname)
+apply(drule_tac x="[(a,b)]\<bullet>c" in spec)
+apply(drule_tac x="[(a,b)]\<bullet>Q" in spec)
+apply(simp)
+apply(simp add: fresh_prod fresh_left)
+apply(drule mp)
+apply(simp add: calc_atm)
+apply(drule_tac pi="[(a,b)]" and x="<a>:M{x:=<([(a,b)]\<bullet>c)>.([(a,b)]\<bullet>Q)}" 
+                                      in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(perm_simp add: nsubst_eqvt CAND_eqvt_coname)
+apply(simp add: calc_atm)
+apply(simp)
+apply(simp)
+apply(case_tac "b=aa")
+apply(simp)
+apply(drule_tac x="x" in meta_spec)
+apply(drule_tac x="a" in meta_spec)
+apply(drule_tac x="[(a,aa)]\<bullet>M" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,aa)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(auto)[1]
+apply(drule_tac pi="[(a,aa)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm CAND_eqvt_coname)
+apply(drule_tac x="z" in spec)
+apply(drule_tac x="[(a,aa)]\<bullet>P" in spec)
+apply(simp add: fresh_prod fresh_left calc_atm)
+apply(drule_tac pi="[(a,aa)]" and x="(x):M{aa:=(z).([(a,aa)]\<bullet>P)}" 
+                                    in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(perm_simp add: calc_atm csubst_eqvt  CAND_eqvt_coname)
+apply(drule meta_mp)
+apply(auto)[1]
+apply(drule_tac pi="[(a,aa)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add:  CAND_eqvt_coname)
+apply(drule_tac x="[(a,aa)]\<bullet>c" in spec)
+apply(drule_tac x="[(a,aa)]\<bullet>Q" in spec)
+apply(simp)
+apply(simp add: fresh_prod fresh_left)
+apply(drule mp)
+apply(simp add: calc_atm)
+apply(drule_tac pi="[(a,aa)]" and x="<aa>:M{x:=<([(a,aa)]\<bullet>c)>.([(a,aa)]\<bullet>Q)}" 
+                                    in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(perm_simp add: nsubst_eqvt  CAND_eqvt_coname)
+apply(simp add: calc_atm)
+apply(simp)
+apply(simp)
+apply(drule_tac x="x" in meta_spec)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="[(a,b)]\<bullet>M" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(a,b)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(auto)[1]
+apply(drule_tac pi="[(a,b)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm  CAND_eqvt_coname)
+apply(drule_tac x="z" in spec)
+apply(drule_tac x="[(a,b)]\<bullet>P" in spec)
+apply(simp add: fresh_prod fresh_left calc_atm)
+apply(drule_tac pi="[(a,b)]" and x="(x):M{aa:=(z).([(a,b)]\<bullet>P)}" 
+                                          in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(perm_simp add: calc_atm csubst_eqvt  CAND_eqvt_coname)
+apply(drule meta_mp)
+apply(auto)[1]
+apply(drule_tac pi="[(a,b)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add:  CAND_eqvt_coname)
+apply(drule_tac x="[(a,b)]\<bullet>c" in spec)
+apply(drule_tac x="[(a,b)]\<bullet>Q" in spec)
+apply(simp add: fresh_prod fresh_left)
+apply(drule mp)
+apply(simp add: calc_atm)
+apply(drule_tac pi="[(a,b)]" and x="<aa>:M{x:=<([(a,b)]\<bullet>c)>.([(a,b)]\<bullet>Q)}" 
+                                        in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(perm_simp add: nsubst_eqvt  CAND_eqvt_coname)
+apply(simp add: calc_atm)
+apply(simp)
+done
+
+lemma IMPLEFT_elim:
+  assumes a: "(x):M \<in> IMPLEFT (B IMP C) (\<parallel><B>\<parallel>) (\<parallel>(C)\<parallel>)"
+  obtains x' a' M' N' where "M = ImpL <a'>.M' (x').N' x" and "fin (ImpL <a'>.M' (x').N' x) x" 
+                   and "<a'>:M' \<in> \<parallel><B>\<parallel>" and "(x'):N' \<in> \<parallel>(C)\<parallel>"
+using a
+apply(auto simp add: ntrm.inject alpha abs_fresh calc_atm)
+apply(drule_tac x="a" in meta_spec)
+apply(drule_tac x="[(x,y)]\<bullet>M" in meta_spec)
+apply(drule_tac x="y" in meta_spec)
+apply(drule_tac x="[(x,y)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,y)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,y)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,y)]" and x="(x):N" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(perm_simp add: calc_atm  CAND_eqvt_name)
+apply(simp)
+apply(case_tac "x=xa")
+apply(simp)
+apply(drule_tac x="a" in meta_spec)
+apply(drule_tac x="[(xa,y)]\<bullet>M" in meta_spec)
+apply(drule_tac x="y" in meta_spec)
+apply(drule_tac x="[(xa,y)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(xa,y)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(xa,y)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(drule meta_mp)
+apply(drule_tac pi="[(xa,y)]" and x="(xa):N" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+apply(simp)
+apply(case_tac "y=xa")
+apply(simp)
+apply(drule_tac x="a" in meta_spec)
+apply(drule_tac x="[(x,xa)]\<bullet>M" in meta_spec)
+apply(drule_tac x="x" in meta_spec)
+apply(drule_tac x="[(x,xa)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,xa)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,xa)]" and x="<a>:M" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm  CAND_eqvt_name)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,xa)]" and x="(xa):N" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+apply(simp)
+apply(drule_tac x="a" in meta_spec)
+apply(drule_tac x="[(x,y)]\<bullet>M" in meta_spec)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="[(x,y)]\<bullet>N" in meta_spec)
+apply(simp)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,y)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,y)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(drule meta_mp)
+apply(drule_tac pi="[(x,y)]" and x="(xa):N" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm CAND_eqvt_name)
+apply(simp)
+done
+
+lemma CANDs_alpha:
+  shows "<a>:M \<in> (\<parallel><B>\<parallel>) \<Longrightarrow> [a].M = [b].N \<Longrightarrow> <b>:N \<in> (\<parallel><B>\<parallel>)"
+  and   "(x):M \<in> (\<parallel>(B)\<parallel>) \<Longrightarrow> [x].M = [y].N \<Longrightarrow> (y):N \<in> (\<parallel>(B)\<parallel>)"
+apply(auto simp add: alpha)
+apply(drule_tac pi="[(a,b)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(perm_simp add: CAND_eqvt_coname calc_atm)
+apply(drule_tac pi="[(x,y)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(perm_simp add: CAND_eqvt_name calc_atm)
+done
+
+lemma CAND_NotR_elim:
+  assumes a: "<a>:NotR (x).M a \<in> (\<parallel><B>\<parallel>)" "<a>:NotR (x).M a \<notin> BINDINGc B (\<parallel>(B)\<parallel>)"
+  shows "\<exists>B'. B = NOT B' \<and> (x):M \<in> (\<parallel>(B')\<parallel>)" 
+using a
+apply(nominal_induct B rule: ty.induct)
+apply(simp_all add: ty.inject AXIOMSc_def ctrm.inject alpha)
+apply(auto intro: CANDs_alpha simp add: trm.inject calc_atm abs_fresh fresh_atm)
+apply(drule_tac pi="[(a,aa)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(auto simp add: CAND_eqvt_coname calc_atm intro: CANDs_alpha)
+done
+
+lemma CAND_NotL_elim_aux:
+  assumes a: "(x):NotL <a>.M x \<in> NEGn B (\<parallel><B>\<parallel>)" "(x):NotL <a>.M x \<notin> BINDINGn B (\<parallel><B>\<parallel>)"
+  shows "\<exists>B'. B = NOT B' \<and> <a>:M \<in> (\<parallel><B'>\<parallel>)" 
+using a
+apply(nominal_induct B rule: ty.induct)
+apply(simp_all add: ty.inject AXIOMSn_def ntrm.inject alpha)
+apply(auto intro: CANDs_alpha simp add: trm.inject calc_atm abs_fresh fresh_atm)
+apply(drule_tac pi="[(x,xa)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(auto simp add: CAND_eqvt_name calc_atm intro: CANDs_alpha)
+done
+
+lemmas CAND_NotL_elim = CAND_NotL_elim_aux[OF NEG_elim(2)]
+
+lemma CAND_AndR_elim:
+  assumes a: "<a>:AndR <b>.M <c>.N a \<in> (\<parallel><B>\<parallel>)" "<a>:AndR <b>.M <c>.N a \<notin> BINDINGc B (\<parallel>(B)\<parallel>)"
+  shows "\<exists>B1 B2. B = B1 AND B2 \<and> <b>:M \<in> (\<parallel><B1>\<parallel>) \<and> <c>:N \<in> (\<parallel><B2>\<parallel>)" 
+using a
+apply(nominal_induct B rule: ty.induct)
+apply(simp_all add: ty.inject AXIOMSc_def ctrm.inject alpha)
+apply(auto intro: CANDs_alpha simp add: trm.inject calc_atm abs_fresh fresh_atm)
+apply(drule_tac pi="[(a,ca)]" and x="<a>:Ma" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_coname calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(drule_tac pi="[(a,ca)]" and x="<a>:Na" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_coname calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(drule_tac pi="[(a,ca)]" and x="<a>:Ma" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_coname calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(case_tac "a=ba")
+apply(simp)
+apply(drule_tac pi="[(ba,ca)]" and x="<ba>:Na" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_coname calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(simp)
+apply(case_tac "ca=ba")
+apply(simp)
+apply(drule_tac pi="[(a,ba)]" and x="<ba>:Na" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_coname calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(simp)
+apply(drule_tac pi="[(a,ca)]" and x="<ba>:Na" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_coname calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(case_tac "a=aa")
+apply(simp)
+apply(drule_tac pi="[(aa,ca)]" and x="<aa>:Ma" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_coname calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(simp)
+apply(case_tac "ca=aa")
+apply(simp)
+apply(drule_tac pi="[(a,aa)]" and x="<aa>:Ma" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_coname calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(simp)
+apply(drule_tac pi="[(a,ca)]" and x="<aa>:Ma" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_coname calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(drule_tac pi="[(a,ca)]" and x="<a>:Na" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_coname calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(case_tac "a=aa")
+apply(simp)
+apply(drule_tac pi="[(aa,ca)]" and x="<aa>:Ma" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_coname calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(simp)
+apply(case_tac "ca=aa")
+apply(simp)
+apply(drule_tac pi="[(a,aa)]" and x="<aa>:Ma" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_coname calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(simp)
+apply(drule_tac pi="[(a,ca)]" and x="<aa>:Ma" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_coname calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(case_tac "a=ba")
+apply(simp)
+apply(drule_tac pi="[(ba,ca)]" and x="<ba>:Na" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_coname calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(simp)
+apply(case_tac "ca=ba")
+apply(simp)
+apply(drule_tac pi="[(a,ba)]" and x="<ba>:Na" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_coname calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(simp)
+apply(drule_tac pi="[(a,ca)]" and x="<ba>:Na" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_coname calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+done
+
+lemma CAND_OrR1_elim:
+  assumes a: "<a>:OrR1 <b>.M a \<in> (\<parallel><B>\<parallel>)" "<a>:OrR1 <b>.M a \<notin> BINDINGc B (\<parallel>(B)\<parallel>)"
+  shows "\<exists>B1 B2. B = B1 OR B2 \<and> <b>:M \<in> (\<parallel><B1>\<parallel>)" 
+using a
+apply(nominal_induct B rule: ty.induct)
+apply(simp_all add: ty.inject AXIOMSc_def ctrm.inject alpha)
+apply(auto intro: CANDs_alpha simp add: trm.inject calc_atm abs_fresh fresh_atm)
+apply(drule_tac pi="[(a,ba)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(auto simp add: CAND_eqvt_coname calc_atm intro: CANDs_alpha)
+apply(case_tac "a=aa")
+apply(simp)
+apply(drule_tac pi="[(aa,ba)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(auto simp add: CAND_eqvt_coname calc_atm intro: CANDs_alpha)
+apply(case_tac "ba=aa")
+apply(simp)
+apply(drule_tac pi="[(a,aa)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(auto simp add: CAND_eqvt_coname calc_atm intro: CANDs_alpha)
+apply(drule_tac pi="[(a,ba)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(auto simp add: CAND_eqvt_coname calc_atm intro: CANDs_alpha)
+done
+
+lemma CAND_OrR2_elim:
+  assumes a: "<a>:OrR2 <b>.M a \<in> (\<parallel><B>\<parallel>)" "<a>:OrR2 <b>.M a \<notin> BINDINGc B (\<parallel>(B)\<parallel>)"
+  shows "\<exists>B1 B2. B = B1 OR B2 \<and> <b>:M \<in> (\<parallel><B2>\<parallel>)" 
+using a
+apply(nominal_induct B rule: ty.induct)
+apply(simp_all add: ty.inject AXIOMSc_def ctrm.inject alpha)
+apply(auto intro: CANDs_alpha simp add: trm.inject calc_atm abs_fresh fresh_atm)
+apply(drule_tac pi="[(a,ba)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(auto simp add: CAND_eqvt_coname calc_atm intro: CANDs_alpha)
+apply(case_tac "a=aa")
+apply(simp)
+apply(drule_tac pi="[(aa,ba)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(auto simp add: CAND_eqvt_coname calc_atm intro: CANDs_alpha)
+apply(case_tac "ba=aa")
+apply(simp)
+apply(drule_tac pi="[(a,aa)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(auto simp add: CAND_eqvt_coname calc_atm intro: CANDs_alpha)
+apply(drule_tac pi="[(a,ba)]" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(auto simp add: CAND_eqvt_coname calc_atm intro: CANDs_alpha)
+done
+
+lemma CAND_OrL_elim_aux:
+  assumes a: "(x):(OrL (y).M (z).N x) \<in> NEGn B (\<parallel><B>\<parallel>)" "(x):(OrL (y).M (z).N x) \<notin> BINDINGn B (\<parallel><B>\<parallel>)"
+  shows "\<exists>B1 B2. B = B1 OR B2 \<and> (y):M \<in> (\<parallel>(B1)\<parallel>) \<and> (z):N \<in> (\<parallel>(B2)\<parallel>)" 
+using a
+apply(nominal_induct B rule: ty.induct)
+apply(simp_all add: ty.inject AXIOMSn_def ntrm.inject alpha)
+apply(auto intro: CANDs_alpha simp add: trm.inject calc_atm abs_fresh fresh_atm)
+apply(drule_tac pi="[(x,za)]" and x="(x):Ma" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(drule_tac pi="[(x,za)]" and x="(x):Nb" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(drule_tac pi="[(x,za)]" and x="(x):Ma" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(case_tac "x=ya")
+apply(simp)
+apply(drule_tac pi="[(ya,za)]" and x="(ya):Nb" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(simp)
+apply(case_tac "za=ya")
+apply(simp)
+apply(drule_tac pi="[(x,ya)]" and x="(ya):Nb" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(simp)
+apply(drule_tac pi="[(x,za)]" and x="(ya):Nb" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(case_tac "x=xa")
+apply(simp)
+apply(drule_tac pi="[(xa,za)]" and x="(xa):Ma" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(simp)
+apply(case_tac "za=xa")
+apply(simp)
+apply(drule_tac pi="[(x,xa)]" and x="(xa):Ma" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(simp)
+apply(drule_tac pi="[(x,za)]" and x="(xa):Ma" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(drule_tac pi="[(x,za)]" and x="(x):Nb" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(case_tac "x=xa")
+apply(simp)
+apply(drule_tac pi="[(xa,za)]" and x="(xa):Ma" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(simp)
+apply(case_tac "za=xa")
+apply(simp)
+apply(drule_tac pi="[(x,xa)]" and x="(xa):Ma" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(simp)
+apply(drule_tac pi="[(x,za)]" and x="(xa):Ma" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(case_tac "x=ya")
+apply(simp)
+apply(drule_tac pi="[(ya,za)]" and x="(ya):Nb" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(simp)
+apply(case_tac "za=ya")
+apply(simp)
+apply(drule_tac pi="[(x,ya)]" and x="(ya):Nb" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(simp)
+apply(drule_tac pi="[(x,za)]" and x="(ya):Nb" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+done
+
+lemmas CAND_OrL_elim = CAND_OrL_elim_aux[OF NEG_elim(2)]
+
+lemma CAND_AndL1_elim_aux:
+  assumes a: "(x):(AndL1 (y).M x) \<in> NEGn B (\<parallel><B>\<parallel>)" "(x):(AndL1 (y).M x) \<notin> BINDINGn B (\<parallel><B>\<parallel>)"
+  shows "\<exists>B1 B2. B = B1 AND B2 \<and> (y):M \<in> (\<parallel>(B1)\<parallel>)" 
+using a
+apply(nominal_induct B rule: ty.induct)
+apply(simp_all add: ty.inject AXIOMSn_def ntrm.inject alpha)
+apply(auto intro: CANDs_alpha simp add: trm.inject calc_atm abs_fresh fresh_atm)
+apply(drule_tac pi="[(x,ya)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(auto simp add: CAND_eqvt_name calc_atm intro: CANDs_alpha)
+apply(case_tac "x=xa")
+apply(simp)
+apply(drule_tac pi="[(xa,ya)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(auto simp add: CAND_eqvt_name calc_atm intro: CANDs_alpha)
+apply(case_tac "ya=xa")
+apply(simp)
+apply(drule_tac pi="[(x,xa)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(auto simp add: CAND_eqvt_name calc_atm intro: CANDs_alpha)
+apply(drule_tac pi="[(x,ya)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(auto simp add: CAND_eqvt_name calc_atm intro: CANDs_alpha)
+done
+
+lemmas CAND_AndL1_elim = CAND_AndL1_elim_aux[OF NEG_elim(2)]
+
+lemma CAND_AndL2_elim_aux:
+  assumes a: "(x):(AndL2 (y).M x) \<in> NEGn B (\<parallel><B>\<parallel>)" "(x):(AndL2 (y).M x) \<notin> BINDINGn B (\<parallel><B>\<parallel>)"
+  shows "\<exists>B1 B2. B = B1 AND B2 \<and> (y):M \<in> (\<parallel>(B2)\<parallel>)" 
+using a
+apply(nominal_induct B rule: ty.induct)
+apply(simp_all add: ty.inject AXIOMSn_def ntrm.inject alpha)
+apply(auto intro: CANDs_alpha simp add: trm.inject calc_atm abs_fresh fresh_atm)
+apply(drule_tac pi="[(x,ya)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(auto simp add: CAND_eqvt_name calc_atm intro: CANDs_alpha)
+apply(case_tac "x=xa")
+apply(simp)
+apply(drule_tac pi="[(xa,ya)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(auto simp add: CAND_eqvt_name calc_atm intro: CANDs_alpha)
+apply(case_tac "ya=xa")
+apply(simp)
+apply(drule_tac pi="[(x,xa)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(auto simp add: CAND_eqvt_name calc_atm intro: CANDs_alpha)
+apply(drule_tac pi="[(x,ya)]" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(auto simp add: CAND_eqvt_name calc_atm intro: CANDs_alpha)
+done
+
+lemmas CAND_AndL2_elim = CAND_AndL2_elim_aux[OF NEG_elim(2)]
+
+lemma CAND_ImpL_elim_aux:
+  assumes a: "(x):(ImpL <a>.M (z).N x) \<in> NEGn B (\<parallel><B>\<parallel>)" "(x):(ImpL <a>.M (z).N x) \<notin> BINDINGn B (\<parallel><B>\<parallel>)"
+  shows "\<exists>B1 B2. B = B1 IMP B2 \<and> <a>:M \<in> (\<parallel><B1>\<parallel>) \<and> (z):N \<in> (\<parallel>(B2)\<parallel>)" 
+using a
+apply(nominal_induct B rule: ty.induct)
+apply(simp_all add: ty.inject AXIOMSn_def ntrm.inject alpha)
+apply(auto intro: CANDs_alpha simp add: trm.inject calc_atm abs_fresh fresh_atm)
+apply(drule_tac pi="[(x,y)]" and x="<aa>:Ma" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(drule_tac pi="[(x,y)]" and x="(x):Nb" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(drule_tac pi="[(x,y)]" and x="<aa>:Ma" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(case_tac "x=xa")
+apply(simp)
+apply(drule_tac pi="[(xa,y)]" and x="(xa):Nb" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(simp)
+apply(case_tac "y=xa")
+apply(simp)
+apply(drule_tac pi="[(x,xa)]" and x="(xa):Nb" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+apply(simp)
+apply(drule_tac pi="[(x,y)]" and x="(xa):Nb" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name calc_atm)
+apply(auto intro: CANDs_alpha)[1]
+done
+
+lemmas CAND_ImpL_elim = CAND_ImpL_elim_aux[OF NEG_elim(2)]
+
+lemma CAND_ImpR_elim:
+  assumes a: "<a>:ImpR (x).<b>.M a \<in> (\<parallel><B>\<parallel>)" "<a>:ImpR (x).<b>.M a \<notin> BINDINGc B (\<parallel>(B)\<parallel>)"
+  shows "\<exists>B1 B2. B = B1 IMP B2 \<and> 
+                 (\<forall>z P. x\<sharp>(z,P) \<and> (z):P \<in> \<parallel>(B2)\<parallel> \<longrightarrow> (x):(M{b:=(z).P}) \<in> \<parallel>(B1)\<parallel>) \<and>
+                 (\<forall>c Q. b\<sharp>(c,Q) \<and> <c>:Q \<in> \<parallel><B1>\<parallel> \<longrightarrow> <b>:(M{x:=<c>.Q}) \<in> \<parallel><B2>\<parallel>)" 
+using a
+apply(nominal_induct B rule: ty.induct)
+apply(simp_all add: ty.inject AXIOMSc_def ctrm.inject alpha)
+apply(auto intro: CANDs_alpha simp add: trm.inject calc_atm abs_fresh fresh_atm fresh_prod fresh_bij)
+apply(generate_fresh "name") 
+apply(generate_fresh "coname")
+apply(drule_tac a="ca" and z="c" in alpha_name_coname)
+apply(simp) 
+apply(simp) 
+apply(simp) 
+apply(drule_tac x="[(xa,c)]\<bullet>[(aa,ca)]\<bullet>[(b,ca)]\<bullet>[(x,c)]\<bullet>z" in spec)
+apply(drule_tac x="[(xa,c)]\<bullet>[(aa,ca)]\<bullet>[(b,ca)]\<bullet>[(x,c)]\<bullet>P" in spec)
+apply(drule mp)
+apply(rule conjI)
+apply(auto simp add: calc_atm fresh_prod fresh_atm)[1]
+apply(rule conjI)
+apply(auto simp add: fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(drule_tac pi="[(x,c)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(b,ca)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(aa,ca)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(xa,c)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(xa,c)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(aa,ca)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(b,ca)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(x,c)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(perm_simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(auto simp add: calc_atm fresh_prod fresh_atm)[1]
+apply(generate_fresh "name")
+apply(generate_fresh "coname")
+apply(drule_tac a="cb" and z="ca" in alpha_name_coname)
+apply(simp)
+apply(simp)
+apply(simp)
+apply(drule_tac x="[(xa,ca)]\<bullet>[(aa,cb)]\<bullet>[(b,cb)]\<bullet>[(x,ca)]\<bullet>c" in spec)
+apply(drule_tac x="[(xa,ca)]\<bullet>[(aa,cb)]\<bullet>[(b,cb)]\<bullet>[(x,ca)]\<bullet>Q" in spec)
+apply(drule mp)
+apply(rule conjI)
+apply(auto simp add: calc_atm fresh_prod fresh_atm)[1]
+apply(rule conjI)
+apply(auto simp add: fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(drule_tac pi="[(x,ca)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(b,cb)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(aa,cb)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(xa,ca)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(xa,ca)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(aa,cb)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(b,cb)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(x,ca)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(perm_simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(auto simp add: calc_atm fresh_prod fresh_atm)[1]
+apply(generate_fresh "name")
+apply(generate_fresh "coname")
+apply(drule_tac a="ca" and z="c" in alpha_name_coname)
+apply(simp add: fresh_left calc_atm fresh_prod fresh_atm)
+apply(simp add: fresh_left calc_atm fresh_prod fresh_atm)
+apply(auto)[1]
+apply(simp)
+apply(drule_tac x="[(a,ba)]\<bullet>[(xa,c)]\<bullet>[(ba,ca)]\<bullet>[(b,ca)]\<bullet>[(x,c)]\<bullet>z" in spec)
+apply(drule_tac x="[(a,ba)]\<bullet>[(xa,c)]\<bullet>[(ba,ca)]\<bullet>[(b,ca)]\<bullet>[(x,c)]\<bullet>P" in spec)
+apply(drule mp)
+apply(rule conjI)
+apply(auto simp add: calc_atm fresh_prod fresh_atm)[1]
+apply(rule conjI)
+apply(auto simp add: fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(drule_tac pi="[(x,c)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(b,ca)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(ba,ca)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(xa,c)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(a,ba)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(a,ba)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(xa,c)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(ba,ca)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(b,ca)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(x,c)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(perm_simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(auto simp add: calc_atm fresh_prod fresh_atm)[1]
+apply(generate_fresh "name")
+apply(generate_fresh "coname")
+apply(drule_tac a="cb" and z="ca" in alpha_name_coname)
+apply(simp add: fresh_left calc_atm fresh_prod fresh_atm)
+apply(simp add: fresh_left calc_atm fresh_prod fresh_atm)
+apply(auto)[1]
+apply(simp)
+apply(drule_tac x="[(a,ba)]\<bullet>[(xa,ca)]\<bullet>[(ba,cb)]\<bullet>[(b,cb)]\<bullet>[(x,ca)]\<bullet>c" in spec)
+apply(drule_tac x="[(a,ba)]\<bullet>[(xa,ca)]\<bullet>[(ba,cb)]\<bullet>[(b,cb)]\<bullet>[(x,ca)]\<bullet>Q" in spec)
+apply(drule mp)
+apply(rule conjI)
+apply(auto simp add: calc_atm fresh_prod fresh_atm)[1]
+apply(rule conjI)
+apply(auto simp add: fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(drule_tac pi="[(x,ca)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(b,cb)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(ba,cb)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(xa,ca)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(a,ba)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(a,ba)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(xa,ca)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(ba,cb)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(b,cb)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(x,ca)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(perm_simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(auto simp add: calc_atm fresh_prod fresh_atm)[1]
+apply(case_tac "a=aa")
+apply(simp)
+apply(generate_fresh "name")
+apply(generate_fresh "coname")
+apply(drule_tac a="ca" and z="c" in alpha_name_coname)
+apply(simp add: fresh_left calc_atm fresh_prod fresh_atm)
+apply(simp add: fresh_left calc_atm fresh_prod fresh_atm)
+apply(auto)[1]
+apply(simp)
+apply(drule_tac x="[(aa,ba)]\<bullet>[(xa,c)]\<bullet>[(ba,ca)]\<bullet>[(b,ca)]\<bullet>[(x,c)]\<bullet>z" in spec)
+apply(drule_tac x="[(aa,ba)]\<bullet>[(xa,c)]\<bullet>[(ba,ca)]\<bullet>[(b,ca)]\<bullet>[(x,c)]\<bullet>P" in spec)
+apply(drule mp)
+apply(rule conjI)
+apply(auto simp add: calc_atm fresh_prod fresh_atm)[1]
+apply(rule conjI)
+apply(auto simp add: fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(drule_tac pi="[(x,c)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(b,ca)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(ba,ca)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(xa,c)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(aa,ba)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(aa,ba)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(xa,c)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(ba,ca)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(b,ca)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(x,c)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(perm_simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(auto simp add: calc_atm fresh_prod fresh_atm)[1]
+apply(simp)
+apply(case_tac "ba=aa")
+apply(simp)
+apply(generate_fresh "name")
+apply(generate_fresh "coname")
+apply(drule_tac a="ca" and z="c" in alpha_name_coname)
+apply(simp add: fresh_left calc_atm fresh_prod fresh_atm)
+apply(simp add: fresh_left calc_atm fresh_prod fresh_atm)
+apply(auto)[1]
+apply(simp)
+apply(drule_tac x="[(a,aa)]\<bullet>[(xa,c)]\<bullet>[(a,ca)]\<bullet>[(b,ca)]\<bullet>[(x,c)]\<bullet>z" in spec)
+apply(drule_tac x="[(a,aa)]\<bullet>[(xa,c)]\<bullet>[(a,ca)]\<bullet>[(b,ca)]\<bullet>[(x,c)]\<bullet>P" in spec)
+apply(drule mp)
+apply(rule conjI)
+apply(auto simp add: calc_atm fresh_prod fresh_atm)[1]
+apply(rule conjI)
+apply(auto simp add: fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(drule_tac pi="[(x,c)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(b,ca)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(a,ca)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(xa,c)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(a,aa)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(a,aa)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(xa,c)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(a,ca)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(b,ca)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(x,c)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(perm_simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(auto simp add: calc_atm fresh_prod fresh_atm)[1]
+apply(simp)
+apply(generate_fresh "name")
+apply(generate_fresh "coname")
+apply(drule_tac a="ca" and z="c" in alpha_name_coname)
+apply(simp add: fresh_left calc_atm fresh_prod fresh_atm)
+apply(simp add: fresh_left calc_atm fresh_prod fresh_atm)
+apply(auto)[1]
+apply(simp)
+apply(drule_tac x="[(a,ba)]\<bullet>[(xa,c)]\<bullet>[(aa,ca)]\<bullet>[(b,ca)]\<bullet>[(x,c)]\<bullet>z" in spec)
+apply(drule_tac x="[(a,ba)]\<bullet>[(xa,c)]\<bullet>[(aa,ca)]\<bullet>[(b,ca)]\<bullet>[(x,c)]\<bullet>P" in spec)
+apply(drule mp)
+apply(rule conjI)
+apply(auto simp add: calc_atm fresh_prod fresh_atm)[1]
+apply(rule conjI)
+apply(auto simp add: fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(drule_tac pi="[(x,c)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(b,ca)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(aa,ca)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(xa,c)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(a,ba)]" and X="\<parallel>(ty2)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(a,ba)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(xa,c)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(aa,ca)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(b,ca)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(x,c)]" and X="\<parallel>(ty1)\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(perm_simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(auto simp add: calc_atm fresh_prod fresh_atm)[1]
+apply(case_tac "a=aa")
+apply(simp)
+apply(generate_fresh "name")
+apply(generate_fresh "coname")
+apply(drule_tac a="cb" and z="ca" in alpha_name_coname)
+apply(simp add: fresh_left calc_atm fresh_prod fresh_atm)
+apply(simp add: fresh_left calc_atm fresh_prod fresh_atm)
+apply(auto)[1]
+apply(simp)
+apply(drule_tac x="[(aa,ba)]\<bullet>[(xa,ca)]\<bullet>[(ba,cb)]\<bullet>[(b,cb)]\<bullet>[(x,ca)]\<bullet>c" in spec)
+apply(drule_tac x="[(aa,ba)]\<bullet>[(xa,ca)]\<bullet>[(ba,cb)]\<bullet>[(b,cb)]\<bullet>[(x,ca)]\<bullet>Q" in spec)
+apply(drule mp)
+apply(rule conjI)
+apply(auto simp add: calc_atm fresh_prod fresh_atm)[1]
+apply(rule conjI)
+apply(auto simp add: fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(drule_tac pi="[(x,ca)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(b,cb)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(ba,cb)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(xa,ca)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(aa,ba)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(aa,ba)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(xa,ca)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(ba,cb)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(b,cb)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(x,ca)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(perm_simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(auto simp add: calc_atm fresh_prod fresh_atm)[1]
+apply(simp)
+apply(case_tac "ba=aa")
+apply(simp)
+apply(generate_fresh "name")
+apply(generate_fresh "coname")
+apply(drule_tac a="cb" and z="ca" in alpha_name_coname)
+apply(simp add: fresh_left calc_atm fresh_prod fresh_atm)
+apply(simp add: fresh_left calc_atm fresh_prod fresh_atm)
+apply(auto)[1]
+apply(simp)
+apply(drule_tac x="[(a,aa)]\<bullet>[(xa,ca)]\<bullet>[(a,cb)]\<bullet>[(b,cb)]\<bullet>[(x,ca)]\<bullet>c" in spec)
+apply(drule_tac x="[(a,aa)]\<bullet>[(xa,ca)]\<bullet>[(a,cb)]\<bullet>[(b,cb)]\<bullet>[(x,ca)]\<bullet>Q" in spec)
+apply(drule mp)
+apply(rule conjI)
+apply(auto simp add: calc_atm fresh_prod fresh_atm)[1]
+apply(rule conjI)
+apply(auto simp add: fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(drule_tac pi="[(x,ca)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(b,cb)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(a,cb)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(xa,ca)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(a,aa)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(a,aa)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(xa,ca)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(a,cb)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(b,cb)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(x,ca)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(perm_simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(auto simp add: calc_atm fresh_prod fresh_atm)[1]
+apply(simp)
+apply(generate_fresh "name")
+apply(generate_fresh "coname")
+apply(drule_tac a="cb" and z="ca" in alpha_name_coname)
+apply(simp add: fresh_left calc_atm fresh_prod fresh_atm)
+apply(simp add: fresh_left calc_atm fresh_prod fresh_atm)
+apply(auto)[1]
+apply(simp)
+apply(drule_tac x="[(a,ba)]\<bullet>[(xa,ca)]\<bullet>[(aa,cb)]\<bullet>[(b,cb)]\<bullet>[(x,ca)]\<bullet>c" in spec)
+apply(drule_tac x="[(a,ba)]\<bullet>[(xa,ca)]\<bullet>[(aa,cb)]\<bullet>[(b,cb)]\<bullet>[(x,ca)]\<bullet>Q" in spec)
+apply(drule mp)
+apply(rule conjI)
+apply(auto simp add: calc_atm fresh_prod fresh_atm)[1]
+apply(rule conjI)
+apply(auto simp add: fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(drule_tac pi="[(x,ca)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(b,cb)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(aa,cb)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(xa,ca)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(a,ba)]" and X="\<parallel><ty1>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(a,ba)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(xa,ca)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(aa,cb)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(drule_tac pi="[(b,cb)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: CAND_eqvt_name CAND_eqvt_coname)
+apply(drule_tac pi="[(x,ca)]" and X="\<parallel><ty2>\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(perm_simp add: CAND_eqvt_name CAND_eqvt_coname csubst_eqvt nsubst_eqvt)
+apply(auto simp add: calc_atm fresh_prod fresh_atm)[1]
+done
+
+text {* Main lemma 1 *}
+
+lemma AXIOMS_imply_SNa:
+  shows "<a>:M \<in> AXIOMSc B \<Longrightarrow> SNa M"
+  and   "(x):M \<in> AXIOMSn B \<Longrightarrow> SNa M"
+apply -
+apply(auto simp add: AXIOMSn_def AXIOMSc_def ntrm.inject ctrm.inject alpha)
+apply(rule Ax_in_SNa)+
+done
+
+lemma BINDING_imply_SNa:
+  shows "<a>:M \<in> BINDINGc B (\<parallel>(B)\<parallel>) \<Longrightarrow> SNa M"
+  and   "(x):M \<in> BINDINGn B (\<parallel><B>\<parallel>) \<Longrightarrow> SNa M"
+apply -
+apply(auto simp add: BINDINGn_def BINDINGc_def ntrm.inject ctrm.inject alpha)
+apply(drule_tac x="x" in spec)
+apply(drule_tac x="Ax x a" in spec)
+apply(drule mp)
+apply(rule Ax_in_CANDs)
+apply(drule a_star_preserves_SNa)
+apply(rule subst_with_ax2)
+apply(simp add: crename_id)
+apply(drule_tac x="x" in spec)
+apply(drule_tac x="Ax x aa" in spec)
+apply(drule mp)
+apply(rule Ax_in_CANDs)
+apply(drule a_star_preserves_SNa)
+apply(rule subst_with_ax2)
+apply(simp add: crename_id SNa_eqvt)
+apply(drule_tac x="a" in spec)
+apply(drule_tac x="Ax x a" in spec)
+apply(drule mp)
+apply(rule Ax_in_CANDs)
+apply(drule a_star_preserves_SNa)
+apply(rule subst_with_ax1)
+apply(simp add: nrename_id)
+apply(drule_tac x="a" in spec)
+apply(drule_tac x="Ax xa a" in spec)
+apply(drule mp)
+apply(rule Ax_in_CANDs)
+apply(drule a_star_preserves_SNa)
+apply(rule subst_with_ax1)
+apply(simp add: nrename_id SNa_eqvt)
+done
+
+lemma CANDs_imply_SNa:
+  shows "<a>:M \<in> \<parallel><B>\<parallel> \<Longrightarrow> SNa M"
+  and   "(x):M \<in> \<parallel>(B)\<parallel> \<Longrightarrow> SNa M"
+proof(induct B arbitrary: a x M rule: ty.weak_induct)
+  case (PR X)
+  { case 1 
+    have "<a>:M \<in> \<parallel><PR X>\<parallel>" by fact
+    then have "<a>:M \<in> NEGc (PR X) (\<parallel>(PR X)\<parallel>)" by simp
+    then have "<a>:M \<in> AXIOMSc (PR X) \<union> BINDINGc (PR X) (\<parallel>(PR X)\<parallel>)" by simp
+    moreover
+    { assume "<a>:M \<in> AXIOMSc (PR X)"
+      then have "SNa M" by (simp add: AXIOMS_imply_SNa)
+    }
+    moreover
+    { assume "<a>:M \<in> BINDINGc (PR X) (\<parallel>(PR X)\<parallel>)"
+      then have "SNa M" by (simp add: BINDING_imply_SNa)
+    }
+    ultimately show "SNa M" by blast 
+  next
+    case 2
+    have "(x):M \<in> (\<parallel>(PR X)\<parallel>)" by fact
+    then have "(x):M \<in> NEGn (PR X) (\<parallel><PR X>\<parallel>)" using NEG_simp by blast
+    then have "(x):M \<in> AXIOMSn (PR X) \<union> BINDINGn (PR X) (\<parallel><PR X>\<parallel>)" by simp
+    moreover
+    { assume "(x):M \<in> AXIOMSn (PR X)"
+      then have "SNa M" by (simp add: AXIOMS_imply_SNa)
+    }
+    moreover
+    { assume "(x):M \<in> BINDINGn (PR X) (\<parallel><PR X>\<parallel>)"
+      then have "SNa M" by (simp only: BINDING_imply_SNa)
+    }
+    ultimately show "SNa M" by blast
+  }
+next
+  case (NOT B)
+  have ih1: "\<And>a M. <a>:M \<in> \<parallel><B>\<parallel> \<Longrightarrow> SNa M" by fact
+  have ih2: "\<And>x M. (x):M \<in> \<parallel>(B)\<parallel> \<Longrightarrow> SNa M" by fact
+  { case 1
+    have "<a>:M \<in> (\<parallel><NOT B>\<parallel>)" by fact
+    then have "<a>:M \<in> NEGc (NOT B) (\<parallel>(NOT B)\<parallel>)" by simp
+    then have "<a>:M \<in> AXIOMSc (NOT B) \<union> BINDINGc (NOT B) (\<parallel>(NOT B)\<parallel>) \<union> NOTRIGHT (NOT B) (\<parallel>(B)\<parallel>)" by simp
+     moreover
+    { assume "<a>:M \<in> AXIOMSc (NOT B)"
+      then have "SNa M" by (simp add: AXIOMS_imply_SNa)
+    }
+    moreover
+    { assume "<a>:M \<in> BINDINGc (NOT B) (\<parallel>(NOT B)\<parallel>)"
+      then have "SNa M" by (simp only: BINDING_imply_SNa)
+    }
+     moreover
+    { assume "<a>:M \<in> NOTRIGHT (NOT B) (\<parallel>(B)\<parallel>)"
+      then obtain x' M' where eq: "M = NotR (x').M' a" and "(x'):M' \<in> (\<parallel>(B)\<parallel>)"
+	using NOTRIGHT_elim by blast
+      then have "SNa M'" using ih2 by blast
+      then have "SNa M" using eq by (simp add: NotR_in_SNa)
+    }
+    ultimately show "SNa M" by blast
+  next
+    case 2
+    have "(x):M \<in> (\<parallel>(NOT B)\<parallel>)" by fact
+    then have "(x):M \<in> NEGn (NOT B) (\<parallel><NOT B>\<parallel>)" using NEG_simp by blast
+    then have "(x):M \<in> AXIOMSn (NOT B) \<union> BINDINGn (NOT B) (\<parallel><NOT B>\<parallel>) \<union> NOTLEFT (NOT B) (\<parallel><B>\<parallel>)" 
+      by (simp only: NEGn.simps)
+     moreover
+    { assume "(x):M \<in> AXIOMSn (NOT B)"
+      then have "SNa M" by (simp add: AXIOMS_imply_SNa)
+    }
+    moreover
+    { assume "(x):M \<in> BINDINGn (NOT B) (\<parallel><NOT B>\<parallel>)"
+      then have "SNa M" by (simp only: BINDING_imply_SNa)
+    }
+     moreover
+    { assume "(x):M \<in> NOTLEFT (NOT B) (\<parallel><B>\<parallel>)"
+      then obtain a' M' where eq: "M = NotL <a'>.M' x" and "<a'>:M' \<in> (\<parallel><B>\<parallel>)"
+	using NOTLEFT_elim by blast
+      then have "SNa M'" using ih1 by blast
+      then have "SNa M" using eq by (simp add: NotL_in_SNa)
+    }
+    ultimately show "SNa M" by blast
+  }
+next
+  case (AND A B)
+  have ih1: "\<And>a M. <a>:M \<in> \<parallel><A>\<parallel> \<Longrightarrow> SNa M" by fact
+  have ih2: "\<And>x M. (x):M \<in> \<parallel>(A)\<parallel> \<Longrightarrow> SNa M" by fact
+  have ih3: "\<And>a M. <a>:M \<in> \<parallel><B>\<parallel> \<Longrightarrow> SNa M" by fact
+  have ih4: "\<And>x M. (x):M \<in> \<parallel>(B)\<parallel> \<Longrightarrow> SNa M" by fact
+  { case 1
+    have "<a>:M \<in> (\<parallel><A AND B>\<parallel>)" by fact
+    then have "<a>:M \<in> NEGc (A AND B) (\<parallel>(A AND B)\<parallel>)" by simp
+    then have "<a>:M \<in> AXIOMSc (A AND B) \<union> BINDINGc (A AND B) (\<parallel>(A AND B)\<parallel>) 
+                                  \<union> ANDRIGHT (A AND B) (\<parallel><A>\<parallel>) (\<parallel><B>\<parallel>)" by simp
+     moreover
+    { assume "<a>:M \<in> AXIOMSc (A AND B)"
+      then have "SNa M" by (simp add: AXIOMS_imply_SNa)
+    }
+    moreover
+    { assume "<a>:M \<in> BINDINGc (A AND B) (\<parallel>(A AND B)\<parallel>)"
+      then have "SNa M" by (simp only: BINDING_imply_SNa)
+    }
+     moreover
+    { assume "<a>:M \<in> ANDRIGHT (A AND B) (\<parallel><A>\<parallel>) (\<parallel><B>\<parallel>)"
+      then obtain a' M' b' N' where eq: "M = AndR <a'>.M' <b'>.N' a" 
+                                and "<a'>:M' \<in> (\<parallel><A>\<parallel>)" and "<b'>:N' \<in> (\<parallel><B>\<parallel>)"
+	by (erule_tac ANDRIGHT_elim, blast)
+      then have "SNa M'" and "SNa N'" using ih1 ih3 by blast+
+      then have "SNa M" using eq by (simp add: AndR_in_SNa)
+    }
+    ultimately show "SNa M" by blast
+  next
+    case 2
+    have "(x):M \<in> (\<parallel>(A AND B)\<parallel>)" by fact
+    then have "(x):M \<in> NEGn (A AND B) (\<parallel><A AND B>\<parallel>)" using NEG_simp by blast
+    then have "(x):M \<in> AXIOMSn (A AND B) \<union> BINDINGn (A AND B) (\<parallel><A AND B>\<parallel>) 
+                       \<union> ANDLEFT1 (A AND B) (\<parallel>(A)\<parallel>) \<union> ANDLEFT2 (A AND B) (\<parallel>(B)\<parallel>)" 
+      by (simp only: NEGn.simps)
+     moreover
+    { assume "(x):M \<in> AXIOMSn (A AND B)"
+      then have "SNa M" by (simp add: AXIOMS_imply_SNa)
+    }
+    moreover
+    { assume "(x):M \<in> BINDINGn (A AND B) (\<parallel><A AND B>\<parallel>)"
+      then have "SNa M" by (simp only: BINDING_imply_SNa)
+    }
+     moreover
+    { assume "(x):M \<in> ANDLEFT1 (A AND B) (\<parallel>(A)\<parallel>)"
+      then obtain x' M' where eq: "M = AndL1 (x').M' x" and "(x'):M' \<in> (\<parallel>(A)\<parallel>)"
+	using ANDLEFT1_elim by blast
+      then have "SNa M'" using ih2 by blast
+      then have "SNa M" using eq by (simp add: AndL1_in_SNa)
+    }
+    moreover
+    { assume "(x):M \<in> ANDLEFT2 (A AND B) (\<parallel>(B)\<parallel>)"
+      then obtain x' M' where eq: "M = AndL2 (x').M' x" and "(x'):M' \<in> (\<parallel>(B)\<parallel>)"
+	using ANDLEFT2_elim by blast
+      then have "SNa M'" using ih4 by blast
+      then have "SNa M" using eq by (simp add: AndL2_in_SNa)
+    }
+    ultimately show "SNa M" by blast
+  }
+next
+  case (OR A B)
+  have ih1: "\<And>a M. <a>:M \<in> \<parallel><A>\<parallel> \<Longrightarrow> SNa M" by fact
+  have ih2: "\<And>x M. (x):M \<in> \<parallel>(A)\<parallel> \<Longrightarrow> SNa M" by fact
+  have ih3: "\<And>a M. <a>:M \<in> \<parallel><B>\<parallel> \<Longrightarrow> SNa M" by fact
+  have ih4: "\<And>x M. (x):M \<in> \<parallel>(B)\<parallel> \<Longrightarrow> SNa M" by fact
+  { case 1
+    have "<a>:M \<in> (\<parallel><A OR B>\<parallel>)" by fact
+    then have "<a>:M \<in> NEGc (A OR B) (\<parallel>(A OR B)\<parallel>)" by simp
+    then have "<a>:M \<in> AXIOMSc (A OR B) \<union> BINDINGc (A OR B) (\<parallel>(A OR B)\<parallel>) 
+                                  \<union> ORRIGHT1 (A OR B) (\<parallel><A>\<parallel>) \<union> ORRIGHT2 (A OR B) (\<parallel><B>\<parallel>)" by simp
+     moreover
+    { assume "<a>:M \<in> AXIOMSc (A OR B)"
+      then have "SNa M" by (simp add: AXIOMS_imply_SNa)
+    }
+    moreover
+    { assume "<a>:M \<in> BINDINGc (A OR B) (\<parallel>(A OR B)\<parallel>)"
+      then have "SNa M" by (simp only: BINDING_imply_SNa)
+    }
+     moreover
+    { assume "<a>:M \<in> ORRIGHT1 (A OR B) (\<parallel><A>\<parallel>)"
+      then obtain a' M' where eq: "M = OrR1 <a'>.M' a" 
+                                and "<a'>:M' \<in> (\<parallel><A>\<parallel>)" 
+	by (erule_tac ORRIGHT1_elim, blast)
+      then have "SNa M'" using ih1 by blast
+      then have "SNa M" using eq by (simp add: OrR1_in_SNa)
+    }
+     moreover
+    { assume "<a>:M \<in> ORRIGHT2 (A OR B) (\<parallel><B>\<parallel>)"
+      then obtain a' M' where eq: "M = OrR2 <a'>.M' a" and "<a'>:M' \<in> (\<parallel><B>\<parallel>)" 
+	using ORRIGHT2_elim by blast
+      then have "SNa M'" using ih3 by blast
+      then have "SNa M" using eq by (simp add: OrR2_in_SNa)
+    }
+    ultimately show "SNa M" by blast
+  next
+    case 2
+    have "(x):M \<in> (\<parallel>(A OR B)\<parallel>)" by fact
+    then have "(x):M \<in> NEGn (A OR B) (\<parallel><A OR B>\<parallel>)" using NEG_simp by blast
+    then have "(x):M \<in> AXIOMSn (A OR B) \<union> BINDINGn (A OR B) (\<parallel><A OR B>\<parallel>) 
+                       \<union> ORLEFT (A OR B) (\<parallel>(A)\<parallel>) (\<parallel>(B)\<parallel>)" 
+      by (simp only: NEGn.simps)
+     moreover
+    { assume "(x):M \<in> AXIOMSn (A OR B)"
+      then have "SNa M" by (simp add: AXIOMS_imply_SNa)
+    }
+    moreover
+    { assume "(x):M \<in> BINDINGn (A OR B) (\<parallel><A OR B>\<parallel>)"
+      then have "SNa M" by (simp only: BINDING_imply_SNa)
+    }
+     moreover
+    { assume "(x):M \<in> ORLEFT (A OR B) (\<parallel>(A)\<parallel>) (\<parallel>(B)\<parallel>)"
+      then obtain x' M' y' N' where eq: "M = OrL (x').M' (y').N' x" 
+                                and "(x'):M' \<in> (\<parallel>(A)\<parallel>)" and  "(y'):N' \<in> (\<parallel>(B)\<parallel>)"
+	by (erule_tac ORLEFT_elim, blast)
+      then have "SNa M'" and "SNa N'" using ih2 ih4 by blast+
+      then have "SNa M" using eq by (simp add: OrL_in_SNa)
+    }
+    ultimately show "SNa M" by blast
+  }
+next 
+  case (IMP A B)
+  have ih1: "\<And>a M. <a>:M \<in> \<parallel><A>\<parallel> \<Longrightarrow> SNa M" by fact
+  have ih2: "\<And>x M. (x):M \<in> \<parallel>(A)\<parallel> \<Longrightarrow> SNa M" by fact
+  have ih3: "\<And>a M. <a>:M \<in> \<parallel><B>\<parallel> \<Longrightarrow> SNa M" by fact
+  have ih4: "\<And>x M. (x):M \<in> \<parallel>(B)\<parallel> \<Longrightarrow> SNa M" by fact
+  { case 1
+    have "<a>:M \<in> (\<parallel><A IMP B>\<parallel>)" by fact
+    then have "<a>:M \<in> NEGc (A IMP B) (\<parallel>(A IMP B)\<parallel>)" by simp
+    then have "<a>:M \<in> AXIOMSc (A IMP B) \<union> BINDINGc (A IMP B) (\<parallel>(A IMP B)\<parallel>) 
+                                  \<union> IMPRIGHT (A IMP B) (\<parallel>(A)\<parallel>) (\<parallel><B>\<parallel>) (\<parallel>(B)\<parallel>) (\<parallel><A>\<parallel>)" by simp
+     moreover
+    { assume "<a>:M \<in> AXIOMSc (A IMP B)"
+      then have "SNa M" by (simp add: AXIOMS_imply_SNa)
+    }
+    moreover
+    { assume "<a>:M \<in> BINDINGc (A IMP B) (\<parallel>(A IMP B)\<parallel>)"
+      then have "SNa M" by (simp only: BINDING_imply_SNa)
+    }
+     moreover
+    { assume "<a>:M \<in> IMPRIGHT (A IMP B) (\<parallel>(A)\<parallel>) (\<parallel><B>\<parallel>) (\<parallel>(B)\<parallel>) (\<parallel><A>\<parallel>)"
+      then obtain x' a' M' where eq: "M = ImpR (x').<a'>.M' a" 
+                           and imp: "\<forall>z P. x'\<sharp>(z,P) \<and> (z):P \<in> \<parallel>(B)\<parallel> \<longrightarrow> (x'):(M'{a':=(z).P}) \<in> \<parallel>(A)\<parallel>"    
+	by (erule_tac IMPRIGHT_elim, blast)
+      obtain z::"name" where fs: "z\<sharp>x'" by (rule_tac exists_fresh, rule fin_supp, blast)
+      have "(z):Ax z a'\<in> \<parallel>(B)\<parallel>" by (simp add: Ax_in_CANDs)
+      with imp fs have "(x'):(M'{a':=(z).Ax z a'}) \<in> \<parallel>(A)\<parallel>" by (simp add: fresh_prod fresh_atm)
+      then have "SNa (M'{a':=(z).Ax z a'})" using ih2 by blast
+      moreover 
+      have "M'{a':=(z).Ax z a'} \<longrightarrow>\<^isub>a* M'[a'\<turnstile>c>a']" by (simp add: subst_with_ax2)
+      ultimately have "SNa (M'[a'\<turnstile>c>a'])" by (simp add: a_star_preserves_SNa)
+      then have "SNa M'" by (simp add: crename_id)
+      then have "SNa M" using eq by (simp add: ImpR_in_SNa)
+    }
+    ultimately show "SNa M" by blast
+  next
+    case 2
+    have "(x):M \<in> (\<parallel>(A IMP B)\<parallel>)" by fact
+    then have "(x):M \<in> NEGn (A IMP B) (\<parallel><A IMP B>\<parallel>)" using NEG_simp by blast
+    then have "(x):M \<in> AXIOMSn (A IMP B) \<union> BINDINGn (A IMP B) (\<parallel><A IMP B>\<parallel>) 
+                       \<union> IMPLEFT (A IMP B) (\<parallel><A>\<parallel>) (\<parallel>(B)\<parallel>)" 
+      by (simp only: NEGn.simps)
+     moreover
+    { assume "(x):M \<in> AXIOMSn (A IMP B)"
+      then have "SNa M" by (simp add: AXIOMS_imply_SNa)
+    }
+    moreover
+    { assume "(x):M \<in> BINDINGn (A IMP B) (\<parallel><A IMP B>\<parallel>)"
+      then have "SNa M" by (simp only: BINDING_imply_SNa)
+    }
+     moreover
+    { assume "(x):M \<in> IMPLEFT (A IMP B) (\<parallel><A>\<parallel>) (\<parallel>(B)\<parallel>)"
+      then obtain a' M' y' N' where eq: "M = ImpL <a'>.M' (y').N' x" 
+                                and "<a'>:M' \<in> (\<parallel><A>\<parallel>)" and  "(y'):N' \<in> (\<parallel>(B)\<parallel>)"
+	by (erule_tac IMPLEFT_elim, blast)
+      then have "SNa M'" and "SNa N'" using ih1 ih4 by blast+
+      then have "SNa M" using eq by (simp add: ImpL_in_SNa)
+    }
+    ultimately show "SNa M" by blast
+  }
+qed 
+
+text {* Main lemma 2 *}
+
+lemma AXIOMS_preserved:
+  shows "<a>:M \<in> AXIOMSc B \<Longrightarrow> M \<longrightarrow>\<^isub>a* M' \<Longrightarrow> <a>:M' \<in> AXIOMSc B"
+  and   "(x):M \<in> AXIOMSn B \<Longrightarrow> M \<longrightarrow>\<^isub>a* M' \<Longrightarrow> (x):M' \<in> AXIOMSn B"
+  apply(simp_all add: AXIOMSc_def AXIOMSn_def)
+  apply(auto simp add: ntrm.inject ctrm.inject alpha)
+  apply(drule ax_do_not_a_star_reduce)
+  apply(auto)
+  apply(drule ax_do_not_a_star_reduce)
+  apply(auto)
+  apply(drule ax_do_not_a_star_reduce)
+  apply(auto)
+  apply(drule ax_do_not_a_star_reduce)
+  apply(auto)
+  done	
+
+lemma BINDING_preserved:
+  shows "<a>:M \<in> BINDINGc B (\<parallel>(B)\<parallel>) \<Longrightarrow> M \<longrightarrow>\<^isub>a* M' \<Longrightarrow> <a>:M' \<in> BINDINGc B (\<parallel>(B)\<parallel>)"
+  and   "(x):M \<in> BINDINGn B (\<parallel><B>\<parallel>) \<Longrightarrow> M \<longrightarrow>\<^isub>a* M' \<Longrightarrow> (x):M' \<in> BINDINGn B (\<parallel><B>\<parallel>)"
+proof -
+  assume red: "M \<longrightarrow>\<^isub>a* M'"
+  assume asm: "<a>:M \<in> BINDINGc B (\<parallel>(B)\<parallel>)"
+  {
+    fix x::"name" and  P::"trm"
+    from asm have "((x):P) \<in> (\<parallel>(B)\<parallel>) \<Longrightarrow> SNa (M{a:=(x).P})" by (simp add: BINDINGc_elim)
+    moreover
+    have "M{a:=(x).P} \<longrightarrow>\<^isub>a* M'{a:=(x).P}" using red by (simp add: a_star_subst2)
+    ultimately 
+    have "((x):P) \<in> (\<parallel>(B)\<parallel>) \<Longrightarrow> SNa (M'{a:=(x).P})" by (simp add: a_star_preserves_SNa)
+  }
+  then show "<a>:M' \<in> BINDINGc B (\<parallel>(B)\<parallel>)" by (auto simp add: BINDINGc_def)
+next
+  assume red: "M \<longrightarrow>\<^isub>a* M'"
+  assume asm: "(x):M \<in> BINDINGn B (\<parallel><B>\<parallel>)"
+  {
+    fix c::"coname" and  P::"trm"
+    from asm have "(<c>:P) \<in> (\<parallel><B>\<parallel>) \<Longrightarrow> SNa (M{x:=<c>.P})" by (simp add: BINDINGn_elim)
+    moreover
+    have "M{x:=<c>.P} \<longrightarrow>\<^isub>a* M'{x:=<c>.P}" using red by (simp add: a_star_subst1)
+    ultimately 
+    have "(<c>:P) \<in> (\<parallel><B>\<parallel>) \<Longrightarrow> SNa (M'{x:=<c>.P})" by (simp add: a_star_preserves_SNa)
+  }
+  then show "(x):M' \<in> BINDINGn B (\<parallel><B>\<parallel>)" by (auto simp add: BINDINGn_def)
+qed
+    
+lemma CANDs_preserved:
+  shows "<a>:M \<in> \<parallel><B>\<parallel> \<Longrightarrow> M \<longrightarrow>\<^isub>a* M' \<Longrightarrow> <a>:M' \<in> \<parallel><B>\<parallel>"
+  and   "(x):M \<in> \<parallel>(B)\<parallel> \<Longrightarrow> M \<longrightarrow>\<^isub>a* M' \<Longrightarrow> (x):M' \<in> \<parallel>(B)\<parallel>" 
+proof(nominal_induct B arbitrary: a x M M' rule: ty.induct) 
+  case (PR X)
+  { case 1 
+    have asm: "M \<longrightarrow>\<^isub>a* M'" by fact
+    have "<a>:M \<in> \<parallel><PR X>\<parallel>" by fact
+    then have "<a>:M \<in> NEGc (PR X) (\<parallel>(PR X)\<parallel>)" by simp
+    then have "<a>:M \<in> AXIOMSc (PR X) \<union> BINDINGc (PR X) (\<parallel>(PR X)\<parallel>)" by simp
+    moreover
+    { assume "<a>:M \<in> AXIOMSc (PR X)"
+      then have "<a>:M' \<in> AXIOMSc (PR X)" using asm by (simp only: AXIOMS_preserved)
+    }
+    moreover
+    { assume "<a>:M \<in> BINDINGc (PR X) (\<parallel>(PR X)\<parallel>)"
+      then have "<a>:M' \<in> BINDINGc (PR X) (\<parallel>(PR X)\<parallel>)" using asm by (simp add: BINDING_preserved)
+    }
+    ultimately have "<a>:M' \<in> AXIOMSc (PR X) \<union> BINDINGc (PR X) (\<parallel>(PR X)\<parallel>)" by blast
+    then have "<a>:M' \<in> NEGc (PR X) (\<parallel>(PR X)\<parallel>)" by simp
+    then show "<a>:M' \<in> (\<parallel><PR X>\<parallel>)" using NEG_simp by blast
+  next
+    case 2
+    have asm: "M \<longrightarrow>\<^isub>a* M'" by fact
+    have "(x):M \<in> \<parallel>(PR X)\<parallel>" by fact
+    then have "(x):M \<in> NEGn (PR X) (\<parallel><PR X>\<parallel>)" using NEG_simp by blast
+    then have "(x):M \<in> AXIOMSn (PR X) \<union> BINDINGn (PR X) (\<parallel><PR X>\<parallel>)" by simp
+    moreover
+    { assume "(x):M \<in> AXIOMSn (PR X)"
+      then have "(x):M' \<in> AXIOMSn (PR X)" using asm by (simp only: AXIOMS_preserved) 
+    }
+    moreover
+    { assume "(x):M \<in> BINDINGn (PR X) (\<parallel><PR X>\<parallel>)"
+      then have "(x):M' \<in> BINDINGn (PR X) (\<parallel><PR X>\<parallel>)" using asm by (simp only: BINDING_preserved)
+    }
+    ultimately have "(x):M' \<in> AXIOMSn (PR X) \<union> BINDINGn (PR X) (\<parallel><PR X>\<parallel>)" by blast
+    then have "(x):M' \<in> NEGn (PR X) (\<parallel><PR X>\<parallel>)" by simp
+    then show "(x):M' \<in> (\<parallel>(PR X)\<parallel>)" using NEG_simp by blast
+  }
+next
+  case (IMP A B)
+  have ih1: "\<And>a M M'. \<lbrakk><a>:M \<in> \<parallel><A>\<parallel>; M \<longrightarrow>\<^isub>a* M'\<rbrakk> \<Longrightarrow> <a>:M' \<in> \<parallel><A>\<parallel>" by fact
+  have ih2: "\<And>x M M'. \<lbrakk>(x):M \<in> \<parallel>(A)\<parallel>; M \<longrightarrow>\<^isub>a* M'\<rbrakk> \<Longrightarrow> (x):M' \<in> \<parallel>(A)\<parallel>" by fact
+  have ih3: "\<And>a M M'. \<lbrakk><a>:M \<in> \<parallel><B>\<parallel>; M \<longrightarrow>\<^isub>a* M'\<rbrakk> \<Longrightarrow> <a>:M' \<in> \<parallel><B>\<parallel>" by fact
+  have ih4: "\<And>x M M'. \<lbrakk>(x):M \<in> \<parallel>(B)\<parallel>; M \<longrightarrow>\<^isub>a* M'\<rbrakk> \<Longrightarrow> (x):M' \<in> \<parallel>(B)\<parallel>" by fact
+  { case 1 
+    have asm: "M \<longrightarrow>\<^isub>a* M'" by fact
+    have "<a>:M \<in> \<parallel><A IMP B>\<parallel>" by fact
+    then have "<a>:M \<in> NEGc (A IMP B) (\<parallel>(A IMP B)\<parallel>)" by simp
+    then have "<a>:M \<in> AXIOMSc (A IMP B) \<union> BINDINGc (A IMP B) (\<parallel>(A IMP B)\<parallel>) 
+                            \<union> IMPRIGHT (A IMP B) (\<parallel>(A)\<parallel>) (\<parallel><B>\<parallel>) (\<parallel>(B)\<parallel>) (\<parallel><A>\<parallel>)" by simp
+    moreover
+    { assume "<a>:M \<in> AXIOMSc (A IMP B)"
+      then have "<a>:M' \<in> AXIOMSc (A IMP B)" using asm by (simp only: AXIOMS_preserved)
+    }
+    moreover
+    { assume "<a>:M \<in> BINDINGc (A IMP B) (\<parallel>(A IMP B)\<parallel>)"
+      then have "<a>:M' \<in> BINDINGc (A IMP B) (\<parallel>(A IMP B)\<parallel>)" using asm by (simp only: BINDING_preserved)
+    }
+    moreover
+    { assume "<a>:M \<in> IMPRIGHT (A IMP B) (\<parallel>(A)\<parallel>) (\<parallel><B>\<parallel>) (\<parallel>(B)\<parallel>) (\<parallel><A>\<parallel>)"
+      then obtain x' a' N' where eq: "M = ImpR (x').<a'>.N' a" and fic: "fic (ImpR (x').<a'>.N' a) a"
+                           and imp1: "\<forall>z P. x'\<sharp>(z,P) \<and> (z):P \<in> \<parallel>(B)\<parallel> \<longrightarrow> (x'):(N'{a':=(z).P}) \<in> \<parallel>(A)\<parallel>" 
+                           and imp2: "\<forall>c Q. a'\<sharp>(c,Q) \<and> <c>:Q \<in> \<parallel><A>\<parallel> \<longrightarrow> <a'>:(N'{x':=<c>.Q}) \<in> \<parallel><B>\<parallel>"
+	using IMPRIGHT_elim by blast
+      from eq asm obtain N'' where eq': "M' = ImpR (x').<a'>.N'' a" and red: "N' \<longrightarrow>\<^isub>a* N''" 
+	using a_star_redu_ImpR_elim by (blast)
+      from imp1 have "\<forall>z P. x'\<sharp>(z,P) \<and> (z):P \<in> \<parallel>(B)\<parallel> \<longrightarrow> (x'):(N''{a':=(z).P}) \<in> \<parallel>(A)\<parallel>" using red ih2
+	apply(auto)
+	apply(drule_tac x="z" in spec)
+	apply(drule_tac x="P" in spec)
+	apply(simp)
+	apply(drule_tac a_star_subst2)
+	apply(blast)
+	done
+      moreover
+      from imp2 have "\<forall>c Q. a'\<sharp>(c,Q) \<and> <c>:Q \<in> \<parallel><A>\<parallel> \<longrightarrow> <a'>:(N''{x':=<c>.Q}) \<in> \<parallel><B>\<parallel>" using red ih3
+	apply(auto)
+	apply(drule_tac x="c" in spec)
+	apply(drule_tac x="Q" in spec)
+	apply(simp)
+	apply(drule_tac a_star_subst1)
+	apply(blast)
+	done
+      moreover
+      from fic have "fic M' a" using eq asm by (simp add: fic_a_star_reduce)
+      ultimately have "<a>:M' \<in> IMPRIGHT (A IMP B) (\<parallel>(A)\<parallel>) (\<parallel><B>\<parallel>) (\<parallel>(B)\<parallel>) (\<parallel><A>\<parallel>)" using eq' by auto
+    }
+    ultimately have "<a>:M' \<in> AXIOMSc (A IMP B) \<union> BINDINGc (A IMP B) (\<parallel>(A IMP B)\<parallel>)
+                                            \<union> IMPRIGHT (A IMP B) (\<parallel>(A)\<parallel>) (\<parallel><B>\<parallel>) (\<parallel>(B)\<parallel>) (\<parallel><A>\<parallel>)" by blast
+    then have "<a>:M' \<in> NEGc (A IMP B) (\<parallel>(A IMP B)\<parallel>)" by simp
+    then show "<a>:M' \<in> (\<parallel><A IMP B>\<parallel>)" using NEG_simp by blast
+  next
+    case 2
+    have asm: "M \<longrightarrow>\<^isub>a* M'" by fact
+    have "(x):M \<in> \<parallel>(A IMP B)\<parallel>" by fact
+    then have "(x):M \<in> NEGn (A IMP B) (\<parallel><A IMP B>\<parallel>)" using NEG_simp by blast
+    then have "(x):M \<in> AXIOMSn (A IMP B) \<union> BINDINGn (A IMP B) (\<parallel><A IMP B>\<parallel>) 
+                                              \<union> IMPLEFT (A IMP B) (\<parallel><A>\<parallel>) (\<parallel>(B)\<parallel>)" by simp
+    moreover
+    { assume "(x):M \<in> AXIOMSn (A IMP B)"
+      then have "(x):M' \<in> AXIOMSn (A IMP B)" using asm by (simp only: AXIOMS_preserved)
+    }
+    moreover
+    { assume "(x):M \<in> BINDINGn (A IMP B) (\<parallel><A IMP B>\<parallel>)"
+      then have "(x):M' \<in> BINDINGn (A IMP B) (\<parallel><A IMP B>\<parallel>)" using asm by (simp only: BINDING_preserved)
+    }
+    moreover
+    { assume "(x):M \<in> IMPLEFT (A IMP B) (\<parallel><A>\<parallel>) (\<parallel>(B)\<parallel>)"
+      then obtain a' T' y' N' where eq: "M = ImpL <a'>.T' (y').N' x" 
+                             and fin: "fin (ImpL <a'>.T' (y').N' x) x"
+                             and imp1: "<a'>:T' \<in> \<parallel><A>\<parallel>" and imp2: "(y'):N' \<in> \<parallel>(B)\<parallel>"
+	by (erule_tac IMPLEFT_elim, blast)
+      from eq asm obtain T'' N'' where eq': "M' = ImpL <a'>.T'' (y').N'' x" 
+                                 and red1: "T' \<longrightarrow>\<^isub>a* T''"  and red2: "N' \<longrightarrow>\<^isub>a* N''"
+	using a_star_redu_ImpL_elim by blast
+      from fin have "fin M' x" using eq asm by (simp add: fin_a_star_reduce)
+      moreover
+      from imp1 red1 have "<a'>:T'' \<in> \<parallel><A>\<parallel>" using ih1 by simp
+      moreover
+      from imp2 red2 have "(y'):N'' \<in> \<parallel>(B)\<parallel>" using ih4 by simp
+      ultimately have "(x):M' \<in> IMPLEFT (A IMP B) (\<parallel><A>\<parallel>) (\<parallel>(B)\<parallel>)" using eq' by (simp, blast) 
+    }
+    ultimately have "(x):M' \<in> AXIOMSn (A IMP B) \<union> BINDINGn (A IMP B) (\<parallel><A IMP B>\<parallel>)
+                                              \<union> IMPLEFT (A IMP B) (\<parallel><A>\<parallel>) (\<parallel>(B)\<parallel>)" by blast
+    then have "(x):M' \<in> NEGn (A IMP B) (\<parallel><A IMP B>\<parallel>)" by simp
+    then show "(x):M' \<in> (\<parallel>(A IMP B)\<parallel>)" using NEG_simp by blast
+  }
+next
+  case (AND A B)
+  have ih1: "\<And>a M M'. \<lbrakk><a>:M \<in> \<parallel><A>\<parallel>; M \<longrightarrow>\<^isub>a* M'\<rbrakk> \<Longrightarrow> <a>:M' \<in> \<parallel><A>\<parallel>" by fact
+  have ih2: "\<And>x M M'. \<lbrakk>(x):M \<in> \<parallel>(A)\<parallel>; M \<longrightarrow>\<^isub>a* M'\<rbrakk> \<Longrightarrow> (x):M' \<in> \<parallel>(A)\<parallel>" by fact
+  have ih3: "\<And>a M M'. \<lbrakk><a>:M \<in> \<parallel><B>\<parallel>; M \<longrightarrow>\<^isub>a* M'\<rbrakk> \<Longrightarrow> <a>:M' \<in> \<parallel><B>\<parallel>" by fact
+  have ih4: "\<And>x M M'. \<lbrakk>(x):M \<in> \<parallel>(B)\<parallel>; M \<longrightarrow>\<^isub>a* M'\<rbrakk> \<Longrightarrow> (x):M' \<in> \<parallel>(B)\<parallel>" by fact
+  { case 1 
+    have asm: "M \<longrightarrow>\<^isub>a* M'" by fact
+    have "<a>:M \<in> \<parallel><A AND B>\<parallel>" by fact
+    then have "<a>:M \<in> NEGc (A AND B) (\<parallel>(A AND B)\<parallel>)" by simp
+    then have "<a>:M \<in> AXIOMSc (A AND B) \<union> BINDINGc (A AND B) (\<parallel>(A AND B)\<parallel>) 
+                                              \<union> ANDRIGHT (A AND B) (\<parallel><A>\<parallel>) (\<parallel><B>\<parallel>)" by simp
+    moreover
+    { assume "<a>:M \<in> AXIOMSc (A AND B)"
+      then have "<a>:M' \<in> AXIOMSc (A AND B)" using asm by (simp only: AXIOMS_preserved)
+    }
+    moreover
+    { assume "<a>:M \<in> BINDINGc (A AND B) (\<parallel>(A AND B)\<parallel>)"
+      then have "<a>:M' \<in> BINDINGc (A AND B) (\<parallel>(A AND B)\<parallel>)" using asm by (simp only: BINDING_preserved)
+    }
+    moreover
+    { assume "<a>:M \<in> ANDRIGHT (A AND B) (\<parallel><A>\<parallel>) (\<parallel><B>\<parallel>)"
+      then obtain a' T' b' N' where eq: "M = AndR <a'>.T' <b'>.N' a" 
+                              and fic: "fic (AndR <a'>.T' <b'>.N' a) a"
+                           and imp1: "<a'>:T' \<in> \<parallel><A>\<parallel>" and imp2: "<b'>:N' \<in> \<parallel><B>\<parallel>"
+	using ANDRIGHT_elim by blast
+      from eq asm obtain T'' N'' where eq': "M' = AndR <a'>.T'' <b'>.N'' a" 
+                          and red1: "T' \<longrightarrow>\<^isub>a* T''" and red2: "N' \<longrightarrow>\<^isub>a* N''" 
+	using a_star_redu_AndR_elim by blast
+      from fic have "fic M' a" using eq asm by (simp add: fic_a_star_reduce)
+      moreover
+      from imp1 red1 have "<a'>:T'' \<in> \<parallel><A>\<parallel>" using ih1 by simp
+      moreover
+      from imp2 red2 have "<b'>:N'' \<in> \<parallel><B>\<parallel>" using ih3 by simp
+      ultimately have "<a>:M' \<in> ANDRIGHT (A AND B) (\<parallel><A>\<parallel>) (\<parallel><B>\<parallel>)" using eq' by (simp, blast) 
+    }
+    ultimately have "<a>:M' \<in> AXIOMSc (A AND B) \<union> BINDINGc (A AND B) (\<parallel>(A AND B)\<parallel>)
+                                              \<union> ANDRIGHT (A AND B) (\<parallel><A>\<parallel>) (\<parallel><B>\<parallel>)" by blast
+    then have "<a>:M' \<in> NEGc (A AND B) (\<parallel>(A AND B)\<parallel>)" by simp
+    then show "<a>:M' \<in> (\<parallel><A AND B>\<parallel>)" using NEG_simp by blast
+  next
+    case 2
+    have asm: "M \<longrightarrow>\<^isub>a* M'" by fact
+    have "(x):M \<in> \<parallel>(A AND B)\<parallel>" by fact
+    then have "(x):M \<in> NEGn (A AND B) (\<parallel><A AND B>\<parallel>)" using NEG_simp by blast
+    then have "(x):M \<in> AXIOMSn (A AND B) \<union> BINDINGn (A AND B) (\<parallel><A AND B>\<parallel>) 
+                                     \<union> ANDLEFT1 (A AND B) (\<parallel>(A)\<parallel>) \<union> ANDLEFT2 (A AND B) (\<parallel>(B)\<parallel>)" by simp
+    moreover
+    { assume "(x):M \<in> AXIOMSn (A AND B)"
+      then have "(x):M' \<in> AXIOMSn (A AND B)" using asm by (simp only: AXIOMS_preserved)
+    }
+    moreover
+    { assume "(x):M \<in> BINDINGn (A AND B) (\<parallel><A AND B>\<parallel>)"
+      then have "(x):M' \<in> BINDINGn (A AND B) (\<parallel><A AND B>\<parallel>)" using asm by (simp only: BINDING_preserved)
+    }
+    moreover
+    { assume "(x):M \<in> ANDLEFT1 (A AND B) (\<parallel>(A)\<parallel>)"
+      then obtain y' N' where eq: "M = AndL1 (y').N' x" 
+                             and fin: "fin (AndL1 (y').N' x) x" and imp: "(y'):N' \<in> \<parallel>(A)\<parallel>"
+	by (erule_tac ANDLEFT1_elim, blast)
+      from eq asm obtain N'' where eq': "M' = AndL1 (y').N'' x" and red1: "N' \<longrightarrow>\<^isub>a* N''"
+	using a_star_redu_AndL1_elim by blast
+      from fin have "fin M' x" using eq asm by (simp add: fin_a_star_reduce)
+      moreover
+      from imp red1 have "(y'):N'' \<in> \<parallel>(A)\<parallel>" using ih2 by simp
+      ultimately have "(x):M' \<in> ANDLEFT1 (A AND B) (\<parallel>(A)\<parallel>)" using eq' by (simp, blast) 
+    }
+     moreover
+    { assume "(x):M \<in> ANDLEFT2 (A AND B) (\<parallel>(B)\<parallel>)"
+      then obtain y' N' where eq: "M = AndL2 (y').N' x" 
+                             and fin: "fin (AndL2 (y').N' x) x" and imp: "(y'):N' \<in> \<parallel>(B)\<parallel>"
+	by (erule_tac ANDLEFT2_elim, blast)
+      from eq asm obtain N'' where eq': "M' = AndL2 (y').N'' x" and red1: "N' \<longrightarrow>\<^isub>a* N''"
+	using a_star_redu_AndL2_elim by blast
+      from fin have "fin M' x" using eq asm by (simp add: fin_a_star_reduce)
+      moreover
+      from imp red1 have "(y'):N'' \<in> \<parallel>(B)\<parallel>" using ih4 by simp
+      ultimately have "(x):M' \<in> ANDLEFT2 (A AND B) (\<parallel>(B)\<parallel>)" using eq' by (simp, blast) 
+    }
+    ultimately have "(x):M' \<in> AXIOMSn (A AND B) \<union> BINDINGn (A AND B) (\<parallel><A AND B>\<parallel>)
+                               \<union> ANDLEFT1 (A AND B) (\<parallel>(A)\<parallel>) \<union> ANDLEFT2 (A AND B) (\<parallel>(B)\<parallel>)" by blast
+    then have "(x):M' \<in> NEGn (A AND B) (\<parallel><A AND B>\<parallel>)" by simp
+    then show "(x):M' \<in> (\<parallel>(A AND B)\<parallel>)" using NEG_simp by blast
+  }
+next    
+ case (OR A B)
+  have ih1: "\<And>a M M'. \<lbrakk><a>:M \<in> \<parallel><A>\<parallel>; M \<longrightarrow>\<^isub>a* M'\<rbrakk> \<Longrightarrow> <a>:M' \<in> \<parallel><A>\<parallel>" by fact
+  have ih2: "\<And>x M M'. \<lbrakk>(x):M \<in> \<parallel>(A)\<parallel>; M \<longrightarrow>\<^isub>a* M'\<rbrakk> \<Longrightarrow> (x):M' \<in> \<parallel>(A)\<parallel>" by fact
+  have ih3: "\<And>a M M'. \<lbrakk><a>:M \<in> \<parallel><B>\<parallel>; M \<longrightarrow>\<^isub>a* M'\<rbrakk> \<Longrightarrow> <a>:M' \<in> \<parallel><B>\<parallel>" by fact
+  have ih4: "\<And>x M M'. \<lbrakk>(x):M \<in> \<parallel>(B)\<parallel>; M \<longrightarrow>\<^isub>a* M'\<rbrakk> \<Longrightarrow> (x):M' \<in> \<parallel>(B)\<parallel>" by fact
+  { case 1 
+    have asm: "M \<longrightarrow>\<^isub>a* M'" by fact
+    have "<a>:M \<in> \<parallel><A OR B>\<parallel>" by fact
+    then have "<a>:M \<in> NEGc (A OR B) (\<parallel>(A OR B)\<parallel>)" by simp
+    then have "<a>:M \<in> AXIOMSc (A OR B) \<union> BINDINGc (A OR B) (\<parallel>(A OR B)\<parallel>) 
+                          \<union> ORRIGHT1 (A OR B) (\<parallel><A>\<parallel>) \<union> ORRIGHT2 (A OR B) (\<parallel><B>\<parallel>)" by simp
+    moreover
+    { assume "<a>:M \<in> AXIOMSc (A OR B)"
+      then have "<a>:M' \<in> AXIOMSc (A OR B)" using asm by (simp only: AXIOMS_preserved)
+    }
+    moreover
+    { assume "<a>:M \<in> BINDINGc (A OR B) (\<parallel>(A OR B)\<parallel>)"
+      then have "<a>:M' \<in> BINDINGc (A OR B) (\<parallel>(A OR B)\<parallel>)" using asm by (simp only: BINDING_preserved)
+    }
+    moreover
+    { assume "<a>:M \<in> ORRIGHT1 (A OR B) (\<parallel><A>\<parallel>)"
+      then obtain a' N' where eq: "M = OrR1 <a'>.N' a" 
+                              and fic: "fic (OrR1 <a'>.N' a) a" and imp1: "<a'>:N' \<in> \<parallel><A>\<parallel>"
+	using ORRIGHT1_elim by blast
+      from eq asm obtain N'' where eq': "M' = OrR1 <a'>.N'' a" and red1: "N' \<longrightarrow>\<^isub>a* N''" 
+	using a_star_redu_OrR1_elim by blast
+      from fic have "fic M' a" using eq asm by (simp add: fic_a_star_reduce)
+      moreover
+      from imp1 red1 have "<a'>:N'' \<in> \<parallel><A>\<parallel>" using ih1 by simp
+      ultimately have "<a>:M' \<in> ORRIGHT1 (A OR B) (\<parallel><A>\<parallel>)" using eq' by (simp, blast) 
+    }
+    moreover
+    { assume "<a>:M \<in> ORRIGHT2 (A OR B) (\<parallel><B>\<parallel>)"
+      then obtain a' N' where eq: "M = OrR2 <a'>.N' a" 
+                              and fic: "fic (OrR2 <a'>.N' a) a" and imp1: "<a'>:N' \<in> \<parallel><B>\<parallel>"
+	using ORRIGHT2_elim by blast
+      from eq asm obtain N'' where eq': "M' = OrR2 <a'>.N'' a" and red1: "N' \<longrightarrow>\<^isub>a* N''" 
+	using a_star_redu_OrR2_elim by blast
+      from fic have "fic M' a" using eq asm by (simp add: fic_a_star_reduce)
+      moreover
+      from imp1 red1 have "<a'>:N'' \<in> \<parallel><B>\<parallel>" using ih3 by simp
+      ultimately have "<a>:M' \<in> ORRIGHT2 (A OR B) (\<parallel><B>\<parallel>)" using eq' by (simp, blast) 
+    }
+    ultimately have "<a>:M' \<in> AXIOMSc (A OR B) \<union> BINDINGc (A OR B) (\<parallel>(A OR B)\<parallel>)
+                                \<union> ORRIGHT1 (A OR B) (\<parallel><A>\<parallel>) \<union> ORRIGHT2 (A OR B) (\<parallel><B>\<parallel>)" by blast
+    then have "<a>:M' \<in> NEGc (A OR B) (\<parallel>(A OR B)\<parallel>)" by simp
+    then show "<a>:M' \<in> (\<parallel><A OR B>\<parallel>)" using NEG_simp by blast
+  next
+    case 2
+    have asm: "M \<longrightarrow>\<^isub>a* M'" by fact
+    have "(x):M \<in> \<parallel>(A OR B)\<parallel>" by fact
+    then have "(x):M \<in> NEGn (A OR B) (\<parallel><A OR B>\<parallel>)" using NEG_simp by blast
+    then have "(x):M \<in> AXIOMSn (A OR B) \<union> BINDINGn (A OR B) (\<parallel><A OR B>\<parallel>) 
+                                     \<union> ORLEFT (A OR B) (\<parallel>(A)\<parallel>) (\<parallel>(B)\<parallel>)" by simp
+    moreover
+    { assume "(x):M \<in> AXIOMSn (A OR B)"
+      then have "(x):M' \<in> AXIOMSn (A OR B)" using asm by (simp only: AXIOMS_preserved)
+    }
+    moreover
+    { assume "(x):M \<in> BINDINGn (A OR B) (\<parallel><A OR B>\<parallel>)"
+      then have "(x):M' \<in> BINDINGn (A OR B) (\<parallel><A OR B>\<parallel>)" using asm by (simp only: BINDING_preserved)
+    }
+    moreover
+    { assume "(x):M \<in> ORLEFT (A OR B) (\<parallel>(A)\<parallel>) (\<parallel>(B)\<parallel>)"
+      then obtain y' T' z' N' where eq: "M = OrL (y').T' (z').N' x" 
+                             and fin: "fin (OrL (y').T' (z').N' x) x" 
+                             and imp1: "(y'):T' \<in> \<parallel>(A)\<parallel>" and imp2: "(z'):N' \<in> \<parallel>(B)\<parallel>"
+	by (erule_tac ORLEFT_elim, blast)
+      from eq asm obtain T'' N'' where eq': "M' = OrL (y').T'' (z').N'' x" 
+                and red1: "T' \<longrightarrow>\<^isub>a* T''" and red2: "N' \<longrightarrow>\<^isub>a* N''"
+	using a_star_redu_OrL_elim by blast
+      from fin have "fin M' x" using eq asm by (simp add: fin_a_star_reduce)
+      moreover
+      from imp1 red1 have "(y'):T'' \<in> \<parallel>(A)\<parallel>" using ih2 by simp
+      moreover
+      from imp2 red2 have "(z'):N'' \<in> \<parallel>(B)\<parallel>" using ih4 by simp
+      ultimately have "(x):M' \<in> ORLEFT (A OR B) (\<parallel>(A)\<parallel>) (\<parallel>(B)\<parallel>)" using eq' by (simp, blast) 
+    }
+    ultimately have "(x):M' \<in> AXIOMSn (A OR B) \<union> BINDINGn (A OR B) (\<parallel><A OR B>\<parallel>)
+                               \<union> ORLEFT (A OR B) (\<parallel>(A)\<parallel>) (\<parallel>(B)\<parallel>)" by blast
+    then have "(x):M' \<in> NEGn (A OR B) (\<parallel><A OR B>\<parallel>)" by simp
+    then show "(x):M' \<in> (\<parallel>(A OR B)\<parallel>)" using NEG_simp by blast
+  }
+next
+  case (NOT A)
+  have ih1: "\<And>a M M'. \<lbrakk><a>:M \<in> \<parallel><A>\<parallel>; M \<longrightarrow>\<^isub>a* M'\<rbrakk> \<Longrightarrow> <a>:M' \<in> \<parallel><A>\<parallel>" by fact
+  have ih2: "\<And>x M M'. \<lbrakk>(x):M \<in> \<parallel>(A)\<parallel>; M \<longrightarrow>\<^isub>a* M'\<rbrakk> \<Longrightarrow> (x):M' \<in> \<parallel>(A)\<parallel>" by fact
+  { case 1 
+    have asm: "M \<longrightarrow>\<^isub>a* M'" by fact
+    have "<a>:M \<in> \<parallel><NOT A>\<parallel>" by fact
+    then have "<a>:M \<in> NEGc (NOT A) (\<parallel>(NOT A)\<parallel>)" by simp
+    then have "<a>:M \<in> AXIOMSc (NOT A) \<union> BINDINGc (NOT A) (\<parallel>(NOT A)\<parallel>) 
+                                              \<union> NOTRIGHT (NOT A) (\<parallel>(A)\<parallel>)" by simp
+    moreover
+    { assume "<a>:M \<in> AXIOMSc (NOT A)"
+      then have "<a>:M' \<in> AXIOMSc (NOT A)" using asm by (simp only: AXIOMS_preserved)
+    }
+    moreover
+    { assume "<a>:M \<in> BINDINGc (NOT A) (\<parallel>(NOT A)\<parallel>)"
+      then have "<a>:M' \<in> BINDINGc (NOT A) (\<parallel>(NOT A)\<parallel>)" using asm by (simp only: BINDING_preserved)
+    }
+    moreover
+    { assume "<a>:M \<in> NOTRIGHT (NOT A) (\<parallel>(A)\<parallel>)"
+      then obtain y' N' where eq: "M = NotR (y').N' a" 
+                              and fic: "fic (NotR (y').N' a) a" and imp: "(y'):N' \<in> \<parallel>(A)\<parallel>"
+	using NOTRIGHT_elim by blast
+      from eq asm obtain N'' where eq': "M' = NotR (y').N'' a" and red: "N' \<longrightarrow>\<^isub>a* N''" 
+	using a_star_redu_NotR_elim by blast
+      from fic have "fic M' a" using eq asm by (simp add: fic_a_star_reduce)
+      moreover
+      from imp red have "(y'):N'' \<in> \<parallel>(A)\<parallel>" using ih2 by simp
+      ultimately have "<a>:M' \<in> NOTRIGHT (NOT A) (\<parallel>(A)\<parallel>)" using eq' by (simp, blast) 
+    }
+    ultimately have "<a>:M' \<in> AXIOMSc (NOT A) \<union> BINDINGc (NOT A) (\<parallel>(NOT A)\<parallel>)
+                                              \<union> NOTRIGHT (NOT A) (\<parallel>(A)\<parallel>)" by blast
+    then have "<a>:M' \<in> NEGc (NOT A) (\<parallel>(NOT A)\<parallel>)" by simp
+    then show "<a>:M' \<in> (\<parallel><NOT A>\<parallel>)" using NEG_simp by blast
+  next
+    case 2
+    have asm: "M \<longrightarrow>\<^isub>a* M'" by fact
+    have "(x):M \<in> \<parallel>(NOT A)\<parallel>" by fact
+    then have "(x):M \<in> NEGn (NOT A) (\<parallel><NOT A>\<parallel>)" using NEG_simp by blast
+    then have "(x):M \<in> AXIOMSn (NOT A) \<union> BINDINGn (NOT A) (\<parallel><NOT A>\<parallel>) 
+                                     \<union> NOTLEFT (NOT A) (\<parallel><A>\<parallel>)" by simp
+    moreover
+    { assume "(x):M \<in> AXIOMSn (NOT A)"
+      then have "(x):M' \<in> AXIOMSn (NOT A)" using asm by (simp only: AXIOMS_preserved)
+    }
+    moreover
+    { assume "(x):M \<in> BINDINGn (NOT A) (\<parallel><NOT A>\<parallel>)"
+      then have "(x):M' \<in> BINDINGn (NOT A) (\<parallel><NOT A>\<parallel>)" using asm by (simp only: BINDING_preserved)
+    }
+    moreover
+    { assume "(x):M \<in> NOTLEFT (NOT A) (\<parallel><A>\<parallel>)"
+      then obtain a' N' where eq: "M = NotL <a'>.N' x" 
+                             and fin: "fin (NotL <a'>.N' x) x" and imp: "<a'>:N' \<in> \<parallel><A>\<parallel>"
+	by (erule_tac NOTLEFT_elim, blast)
+      from eq asm obtain N'' where eq': "M' = NotL <a'>.N'' x" and red1: "N' \<longrightarrow>\<^isub>a* N''"
+	using a_star_redu_NotL_elim by blast
+      from fin have "fin M' x" using eq asm by (simp add: fin_a_star_reduce)
+      moreover
+      from imp red1 have "<a'>:N'' \<in> \<parallel><A>\<parallel>" using ih1 by simp
+      ultimately have "(x):M' \<in> NOTLEFT (NOT A) (\<parallel><A>\<parallel>)" using eq' by (simp, blast) 
+    }
+    ultimately have "(x):M' \<in> AXIOMSn (NOT A) \<union> BINDINGn (NOT A) (\<parallel><NOT A>\<parallel>)
+                               \<union> NOTLEFT (NOT A) (\<parallel><A>\<parallel>)" by blast
+    then have "(x):M' \<in> NEGn (NOT A) (\<parallel><NOT A>\<parallel>)" by simp
+    then show "(x):M' \<in> (\<parallel>(NOT A)\<parallel>)" using NEG_simp by blast
+  }
+qed
+
+lemma CANDs_preserved_single:
+  shows "<a>:M \<in> \<parallel><B>\<parallel> \<Longrightarrow> M \<longrightarrow>\<^isub>a M' \<Longrightarrow> <a>:M' \<in> \<parallel><B>\<parallel>"
+  and   "(x):M \<in> \<parallel>(B)\<parallel> \<Longrightarrow> M \<longrightarrow>\<^isub>a M' \<Longrightarrow> (x):M' \<in> \<parallel>(B)\<parallel>"
+by (auto simp add: a_starI CANDs_preserved)
+
+lemma fic_CANDS:
+  assumes a: "\<not>fic M a"
+  and     b: "<a>:M \<in> \<parallel><B>\<parallel>"
+  shows "<a>:M \<in> AXIOMSc B \<or> <a>:M \<in> BINDINGc B (\<parallel>(B)\<parallel>)"
+using a b
+apply(nominal_induct B rule: ty.induct)
+apply(simp)
+apply(simp)
+apply(erule disjE)
+apply(simp)
+apply(erule disjE)
+apply(simp)
+apply(auto simp add: ctrm.inject)[1]
+apply(simp add: alpha)
+apply(erule disjE)
+apply(simp)
+apply(auto simp add: calc_atm)[1]
+apply(drule_tac pi="[(a,aa)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(simp)
+apply(erule disjE)
+apply(simp)
+apply(erule disjE)
+apply(simp)
+apply(auto simp add: ctrm.inject)[1]
+apply(simp add: alpha)
+apply(erule disjE)
+apply(simp)
+apply(erule conjE)+
+apply(simp)
+apply(drule_tac pi="[(a,c)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(simp)
+apply(erule disjE)
+apply(simp)
+apply(erule disjE)
+apply(simp)
+apply(auto simp add: ctrm.inject)[1]
+apply(simp add: alpha)
+apply(erule disjE)
+apply(simp)
+apply(erule conjE)+
+apply(simp)
+apply(drule_tac pi="[(a,b)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(simp add: alpha)
+apply(erule disjE)
+apply(simp)
+apply(erule conjE)+
+apply(simp)
+apply(drule_tac pi="[(a,b)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+apply(simp)
+apply(erule disjE)
+apply(simp)
+apply(erule disjE)
+apply(simp)
+apply(auto simp add: ctrm.inject)[1]
+apply(simp add: alpha)
+apply(erule disjE)
+apply(simp)
+apply(erule conjE)+
+apply(simp)
+apply(drule_tac pi="[(a,b)]" in fic.eqvt(2))
+apply(simp add: calc_atm)
+done
+
+lemma fin_CANDS_aux:
+  assumes a: "\<not>fin M x"
+  and     b: "(x):M \<in> (NEGn B (\<parallel><B>\<parallel>))"
+  shows "(x):M \<in> AXIOMSn B \<or> (x):M \<in> BINDINGn B (\<parallel><B>\<parallel>)"
+using a b
+apply(nominal_induct B rule: ty.induct)
+apply(simp)
+apply(simp)
+apply(erule disjE)
+apply(simp)
+apply(erule disjE)
+apply(simp)
+apply(auto simp add: ntrm.inject)[1]
+apply(simp add: alpha)
+apply(erule disjE)
+apply(simp)
+apply(auto simp add: calc_atm)[1]
+apply(drule_tac pi="[(x,xa)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(simp)
+apply(erule disjE)
+apply(simp)
+apply(erule disjE)
+apply(simp)
+apply(auto simp add: ntrm.inject)[1]
+apply(simp add: alpha)
+apply(erule disjE)
+apply(simp)
+apply(erule conjE)+
+apply(simp)
+apply(drule_tac pi="[(x,y)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(simp add: alpha)
+apply(erule disjE)
+apply(simp)
+apply(erule conjE)+
+apply(simp)
+apply(drule_tac pi="[(x,y)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(simp)
+apply(erule disjE)
+apply(simp)
+apply(erule disjE)
+apply(simp)
+apply(auto simp add: ntrm.inject)[1]
+apply(simp add: alpha)
+apply(erule disjE)
+apply(simp)
+apply(erule conjE)+
+apply(simp)
+apply(drule_tac pi="[(x,z)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+apply(simp)
+apply(erule disjE)
+apply(simp)
+apply(erule disjE)
+apply(simp)
+apply(auto simp add: ntrm.inject)[1]
+apply(simp add: alpha)
+apply(erule disjE)
+apply(simp)
+apply(erule conjE)+
+apply(simp)
+apply(drule_tac pi="[(x,y)]" in fin.eqvt(1))
+apply(simp add: calc_atm)
+done
+
+lemma fin_CANDS:
+  assumes a: "\<not>fin M x"
+  and     b: "(x):M \<in> (\<parallel>(B)\<parallel>)"
+  shows "(x):M \<in> AXIOMSn B \<or> (x):M \<in> BINDINGn B (\<parallel><B>\<parallel>)"
+apply(rule fin_CANDS_aux)
+apply(rule a)
+apply(rule NEG_elim)
+apply(rule b)
+done
+
+lemma BINDING_implies_CAND:
+  shows "<c>:M \<in> BINDINGc B (\<parallel>(B)\<parallel>) \<Longrightarrow> <c>:M \<in> (\<parallel><B>\<parallel>)"
+  and   "(x):N \<in> BINDINGn B (\<parallel><B>\<parallel>) \<Longrightarrow> (x):N \<in> (\<parallel>(B)\<parallel>)"
+apply -
+apply(nominal_induct B rule: ty.induct)
+apply(auto)
+apply(rule NEG_intro)
+apply(nominal_induct B rule: ty.induct)
+apply(auto)
+done
+
+text {* 3rd Main Lemma *}
+
+lemma Cut_a_redu_elim:
+  assumes a: "Cut <a>.M (x).N \<longrightarrow>\<^isub>a R"
+  shows "(\<exists>M'. R = Cut <a>.M' (x).N \<and> M \<longrightarrow>\<^isub>a M') \<or>
+         (\<exists>N'. R = Cut <a>.M (x).N' \<and> N \<longrightarrow>\<^isub>a N') \<or>
+         (Cut <a>.M (x).N \<longrightarrow>\<^isub>c R) \<or>
+         (Cut <a>.M (x).N \<longrightarrow>\<^isub>l R)"
+using a
+apply(erule_tac a_redu.cases)
+apply(simp_all)
+apply(simp_all add: trm.inject)
+apply(rule disjI1)
+apply(auto simp add: alpha)[1]
+apply(rule_tac x="[(a,aa)]\<bullet>M'" in exI)
+apply(perm_simp add: fresh_left calc_atm a_redu.eqvt fresh_a_redu)
+apply(rule_tac x="[(a,aa)]\<bullet>M'" in exI)
+apply(perm_simp add: fresh_left calc_atm a_redu.eqvt fresh_a_redu)
+apply(rule disjI2)
+apply(rule disjI1)
+apply(auto simp add: alpha)[1]
+apply(rule_tac x="[(x,xa)]\<bullet>N'" in exI)
+apply(perm_simp add: fresh_left calc_atm a_redu.eqvt fresh_a_redu)
+apply(rule_tac x="[(x,xa)]\<bullet>N'" in exI)
+apply(perm_simp add: fresh_left calc_atm a_redu.eqvt fresh_a_redu)
+done
+
+lemma Cut_c_redu_elim:
+  assumes a: "Cut <a>.M (x).N \<longrightarrow>\<^isub>c R"
+  shows "(R = M{a:=(x).N} \<and> \<not>fic M a) \<or>
+         (R = N{x:=<a>.M} \<and> \<not>fin N x)"
+using a
+apply(erule_tac c_redu.cases)
+apply(simp_all)
+apply(simp_all add: trm.inject)
+apply(rule disjI1)
+apply(auto simp add: alpha)[1]
+apply(simp add: subst_rename fresh_atm)
+apply(simp add: subst_rename fresh_atm)
+apply(drule_tac pi="[(a,aa)]" in fic.eqvt(2))
+apply(perm_simp)
+apply(simp add: subst_rename fresh_atm fresh_prod)
+apply(drule_tac pi="[(a,aa)]" in fic.eqvt(2))
+apply(perm_simp)
+apply(rule disjI2)
+apply(auto simp add: alpha)[1]
+apply(simp add: subst_rename fresh_atm)
+apply(drule_tac pi="[(x,xa)]" in fin.eqvt(1))
+apply(perm_simp)
+apply(simp add: subst_rename fresh_atm fresh_prod)
+apply(simp add: subst_rename fresh_atm fresh_prod)
+apply(drule_tac pi="[(x,xa)]" in fin.eqvt(1))
+apply(perm_simp)
+done
+
+lemma not_fic_crename_aux:
+  assumes a: "fic M c" "c\<sharp>(a,b)"
+  shows "fic (M[a\<turnstile>c>b]) c" 
+using a
+apply(nominal_induct M avoiding: c a b rule: trm.induct)
+apply(auto dest!: fic_elims intro!: fic.intros simp add: fresh_prod fresh_atm rename_fresh abs_fresh)
+done
+
+lemma not_fic_crename:
+  assumes a: "\<not>(fic (M[a\<turnstile>c>b]) c)" "c\<sharp>(a,b)"
+  shows "\<not>(fic M c)" 
+using a
+apply(auto dest:  not_fic_crename_aux)
+done
+
+lemma not_fin_crename_aux:
+  assumes a: "fin M y"
+  shows "fin (M[a\<turnstile>c>b]) y" 
+using a
+apply(nominal_induct M avoiding: a b rule: trm.induct)
+apply(auto dest!: fin_elims intro!: fin.intros simp add: fresh_prod fresh_atm rename_fresh abs_fresh)
+done
+
+lemma not_fin_crename:
+  assumes a: "\<not>(fin (M[a\<turnstile>c>b]) y)" 
+  shows "\<not>(fin M y)" 
+using a
+apply(auto dest:  not_fin_crename_aux)
+done
+
+lemma crename_fresh_interesting1:
+  fixes c::"coname"
+  assumes a: "c\<sharp>(M[a\<turnstile>c>b])" "c\<sharp>(a,b)"
+  shows "c\<sharp>M"
+using a
+apply(nominal_induct M avoiding: c a b rule: trm.induct)
+apply(auto split: if_splits simp add: abs_fresh)
+done
+
+lemma crename_fresh_interesting2:
+  fixes x::"name"
+  assumes a: "x\<sharp>(M[a\<turnstile>c>b])" 
+  shows "x\<sharp>M"
+using a
+apply(nominal_induct M avoiding: x a b rule: trm.induct)
+apply(auto split: if_splits simp add: abs_fresh abs_supp fin_supp fresh_atm)
+done
+
+
+lemma fic_crename:
+  assumes a: "fic (M[a\<turnstile>c>b]) c" "c\<sharp>(a,b)"
+  shows "fic M c" 
+using a
+apply(nominal_induct M avoiding: c a b rule: trm.induct)
+apply(auto dest!: fic_elims intro!: fic.intros simp add: fresh_prod fresh_atm rename_fresh abs_fresh
+           split: if_splits)
+apply(auto dest: crename_fresh_interesting1 simp add: fresh_prod fresh_atm)
+done
+
+lemma fin_crename:
+  assumes a: "fin (M[a\<turnstile>c>b]) x"
+  shows "fin M x" 
+using a
+apply(nominal_induct M avoiding: x a b rule: trm.induct)
+apply(auto dest!: fin_elims intro!: fin.intros simp add: fresh_prod fresh_atm rename_fresh abs_fresh
+           split: if_splits)
+apply(auto dest: crename_fresh_interesting2 simp add: fresh_prod fresh_atm)
+done
+
+lemma crename_Cut:
+  assumes a: "R[a\<turnstile>c>b] = Cut <c>.M (x).N" "c\<sharp>(a,b,N,R)" "x\<sharp>(M,R)"
+  shows "\<exists>M' N'. R = Cut <c>.M' (x).N' \<and> M'[a\<turnstile>c>b] = M \<and> N'[a\<turnstile>c>b] = N \<and> c\<sharp>N' \<and> x\<sharp>M'"
+using a
+apply(nominal_induct R avoiding: a b c x M N rule: trm.induct)
+apply(auto split: if_splits)
+apply(simp add: trm.inject)
+apply(auto simp add: alpha)
+apply(rule_tac x="[(name,x)]\<bullet>trm2" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+apply(rule_tac x="[(coname,c)]\<bullet>trm1" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+apply(auto simp add: fresh_atm)[1]
+apply(rule_tac x="[(coname,c)]\<bullet>trm1" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(rule_tac x="[(name,x)]\<bullet>trm2" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+apply(auto simp add: fresh_atm)[1]
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma crename_NotR:
+  assumes a: "R[a\<turnstile>c>b] = NotR (x).N c" "x\<sharp>R" "c\<sharp>(a,b)"
+  shows "\<exists>N'. (R = NotR (x).N' c) \<and> N'[a\<turnstile>c>b] = N" 
+using a
+apply(nominal_induct R avoiding: a b c x N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+apply(rule_tac x="[(name,x)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma crename_NotR':
+  assumes a: "R[a\<turnstile>c>b] = NotR (x).N c" "x\<sharp>R" "c\<sharp>a"
+  shows "(\<exists>N'. (R = NotR (x).N' c) \<and> N'[a\<turnstile>c>b] = N) \<or> (\<exists>N'. (R = NotR (x).N' a) \<and> b=c \<and> N'[a\<turnstile>c>b] = N)"
+using a
+apply(nominal_induct R avoiding: a b c x N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm abs_fresh alpha trm.inject)
+apply(rule_tac x="[(name,x)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+apply(rule_tac x="[(name,x)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma crename_NotR_aux:
+  assumes a: "R[a\<turnstile>c>b] = NotR (x).N c" 
+  shows "(a=c \<and> a=b) \<or> (a\<noteq>c)" 
+using a
+apply(nominal_induct R avoiding: a b c x N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+done
+
+lemma crename_NotL:
+  assumes a: "R[a\<turnstile>c>b] = NotL <c>.N y" "c\<sharp>(R,a,b)"
+  shows "\<exists>N'. (R = NotL <c>.N' y) \<and> N'[a\<turnstile>c>b] = N" 
+using a
+apply(nominal_induct R avoiding: a b c y N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+apply(rule_tac x="[(coname,c)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma crename_AndL1:
+  assumes a: "R[a\<turnstile>c>b] = AndL1 (x).N y" "x\<sharp>R"
+  shows "\<exists>N'. (R = AndL1 (x).N' y) \<and> N'[a\<turnstile>c>b] = N" 
+using a
+apply(nominal_induct R avoiding: a b x y N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+apply(rule_tac x="[(name1,x)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma crename_AndL2:
+  assumes a: "R[a\<turnstile>c>b] = AndL2 (x).N y" "x\<sharp>R"
+  shows "\<exists>N'. (R = AndL2 (x).N' y) \<and> N'[a\<turnstile>c>b] = N" 
+using a
+apply(nominal_induct R avoiding: a b x y N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+apply(rule_tac x="[(name1,x)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma crename_AndR_aux:
+  assumes a: "R[a\<turnstile>c>b] = AndR <c>.M <d>.N e" 
+  shows "(a=e \<and> a=b) \<or> (a\<noteq>e)" 
+using a
+apply(nominal_induct R avoiding: a b c d e M N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+done
+
+lemma crename_AndR:
+  assumes a: "R[a\<turnstile>c>b] = AndR <c>.M <d>.N e" "c\<sharp>(a,b,d,e,N,R)" "d\<sharp>(a,b,c,e,M,R)" "e\<sharp>(a,b)"
+  shows "\<exists>M' N'. R = AndR <c>.M' <d>.N' e \<and> M'[a\<turnstile>c>b] = M \<and> N'[a\<turnstile>c>b] = N \<and> c\<sharp>N' \<and> d\<sharp>M'"
+using a
+apply(nominal_induct R avoiding: a b c d e M N rule: trm.induct)
+apply(auto split: if_splits simp add: trm.inject alpha)
+apply(simp add: fresh_atm fresh_prod)
+apply(rule_tac x="[(coname2,d)]\<bullet>trm2" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(rule_tac x="[(coname1,c)]\<bullet>trm1" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(rule_tac x="[(coname1,c)]\<bullet>trm1" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(rule_tac x="[(coname2,d)]\<bullet>trm2" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(rule_tac x="[(coname1,c)]\<bullet>trm1" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(rule_tac x="[(coname1,c)]\<bullet>trm1" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(rule_tac x="[(coname2,d)]\<bullet>trm2" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+apply(drule_tac s="trm2[a\<turnstile>c>b]" in  sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma crename_AndR':
+  assumes a: "R[a\<turnstile>c>b] = AndR <c>.M <d>.N e" "c\<sharp>(a,b,d,e,N,R)" "d\<sharp>(a,b,c,e,M,R)" "e\<sharp>a"
+  shows "(\<exists>M' N'. R = AndR <c>.M' <d>.N' e \<and> M'[a\<turnstile>c>b] = M \<and> N'[a\<turnstile>c>b] = N \<and> c\<sharp>N' \<and> d\<sharp>M') \<or>
+         (\<exists>M' N'. R = AndR <c>.M' <d>.N' a \<and> b=e \<and> M'[a\<turnstile>c>b] = M \<and> N'[a\<turnstile>c>b] = N \<and> c\<sharp>N' \<and> d\<sharp>M')"
+using a
+apply(nominal_induct R avoiding: a b c d e M N rule: trm.induct)
+apply(auto split: if_splits simp add: trm.inject alpha)[1]
+apply(auto split: if_splits simp add: trm.inject alpha)[1]
+apply(auto split: if_splits simp add: trm.inject alpha)[1]
+apply(auto split: if_splits simp add: trm.inject alpha)[1]
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm trm.inject alpha)[1]
+apply(case_tac "coname3=a")
+apply(simp)
+apply(rule_tac x="[(coname1,c)]\<bullet>trm1" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(rule_tac x="[(coname2,d)]\<bullet>trm2" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm trm.inject alpha split: if_splits)[1]
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+apply(drule_tac s="trm2[a\<turnstile>c>e]" in  sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+apply(simp)
+apply(rule_tac x="[(coname1,c)]\<bullet>trm1" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(rule_tac x="[(coname2,d)]\<bullet>trm2" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm trm.inject alpha split: if_splits)[1]
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+apply(drule_tac s="trm2[a\<turnstile>c>b]" in  sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+done
+
+lemma crename_OrR1_aux:
+  assumes a: "R[a\<turnstile>c>b] = OrR1 <c>.M e" 
+  shows "(a=e \<and> a=b) \<or> (a\<noteq>e)" 
+using a
+apply(nominal_induct R avoiding: a b c e M rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+done
+
+lemma crename_OrR1:
+  assumes a: "R[a\<turnstile>c>b] = OrR1 <c>.N d" "c\<sharp>(R,a,b)" "d\<sharp>(a,b)"
+  shows "\<exists>N'. (R = OrR1 <c>.N' d) \<and> N'[a\<turnstile>c>b] = N" 
+using a
+apply(nominal_induct R avoiding: a b c d N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+apply(rule_tac x="[(coname1,c)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma crename_OrR1':
+  assumes a: "R[a\<turnstile>c>b] = OrR1 <c>.N d" "c\<sharp>(R,a,b)" "d\<sharp>a"
+  shows "(\<exists>N'. (R = OrR1 <c>.N' d) \<and> N'[a\<turnstile>c>b] = N) \<or>
+         (\<exists>N'. (R = OrR1 <c>.N' a) \<and> b=d \<and> N'[a\<turnstile>c>b] = N)" 
+using a
+apply(nominal_induct R avoiding: a b c d N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+apply(rule_tac x="[(coname1,c)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+apply(rule_tac x="[(coname1,c)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma crename_OrR2_aux:
+  assumes a: "R[a\<turnstile>c>b] = OrR2 <c>.M e" 
+  shows "(a=e \<and> a=b) \<or> (a\<noteq>e)" 
+using a
+apply(nominal_induct R avoiding: a b c e M rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+done
+
+lemma crename_OrR2:
+  assumes a: "R[a\<turnstile>c>b] = OrR2 <c>.N d" "c\<sharp>(R,a,b)" "d\<sharp>(a,b)"
+  shows "\<exists>N'. (R = OrR2 <c>.N' d) \<and> N'[a\<turnstile>c>b] = N" 
+using a
+apply(nominal_induct R avoiding: a b c d N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+apply(rule_tac x="[(coname1,c)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma crename_OrR2':
+  assumes a: "R[a\<turnstile>c>b] = OrR2 <c>.N d" "c\<sharp>(R,a,b)" "d\<sharp>a"
+  shows "(\<exists>N'. (R = OrR2 <c>.N' d) \<and> N'[a\<turnstile>c>b] = N) \<or>
+         (\<exists>N'. (R = OrR2 <c>.N' a) \<and> b=d \<and> N'[a\<turnstile>c>b] = N)" 
+using a
+apply(nominal_induct R avoiding: a b c d N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+apply(rule_tac x="[(coname1,c)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+apply(rule_tac x="[(coname1,c)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma crename_OrL:
+  assumes a: "R[a\<turnstile>c>b] = OrL (x).M (y).N z" "x\<sharp>(y,z,N,R)" "y\<sharp>(x,z,M,R)"
+  shows "\<exists>M' N'. R = OrL (x).M' (y).N' z \<and> M'[a\<turnstile>c>b] = M \<and> N'[a\<turnstile>c>b] = N \<and> x\<sharp>N' \<and> y\<sharp>M'"
+using a
+apply(nominal_induct R avoiding: a b x y z M N rule: trm.induct)
+apply(auto split: if_splits simp add: trm.inject alpha)
+apply(rule_tac x="[(name2,y)]\<bullet>trm2" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(rule_tac x="[(name1,x)]\<bullet>trm1" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(rule_tac x="[(name1,x)]\<bullet>trm1" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(rule_tac x="[(name2,y)]\<bullet>trm2" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+apply(drule_tac s="trm2[a\<turnstile>c>b]" in  sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma crename_ImpL:
+  assumes a: "R[a\<turnstile>c>b] = ImpL <c>.M (y).N z" "c\<sharp>(a,b,N,R)" "y\<sharp>(z,M,R)"
+  shows "\<exists>M' N'. R = ImpL <c>.M' (y).N' z \<and> M'[a\<turnstile>c>b] = M \<and> N'[a\<turnstile>c>b] = N \<and> c\<sharp>N' \<and> y\<sharp>M'"
+using a
+apply(nominal_induct R avoiding: a b c y z M N rule: trm.induct)
+apply(auto split: if_splits simp add: trm.inject alpha)
+apply(rule_tac x="[(name1,y)]\<bullet>trm2" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(rule_tac x="[(coname,c)]\<bullet>trm1" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(rule_tac x="[(coname,c)]\<bullet>trm1" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(rule_tac x="[(name1,y)]\<bullet>trm2" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+apply(drule_tac s="trm2[a\<turnstile>c>b]" in  sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma crename_ImpR_aux:
+  assumes a: "R[a\<turnstile>c>b] = ImpR (x).<c>.M e" 
+  shows "(a=e \<and> a=b) \<or> (a\<noteq>e)" 
+using a
+apply(nominal_induct R avoiding: x a b c e M rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+done
+
+lemma crename_ImpR:
+  assumes a: "R[a\<turnstile>c>b] = ImpR (x).<c>.N d" "c\<sharp>(R,a,b)" "d\<sharp>(a,b)" "x\<sharp>R" 
+  shows "\<exists>N'. (R = ImpR (x).<c>.N' d) \<and> N'[a\<turnstile>c>b] = N" 
+using a
+apply(nominal_induct R avoiding: a b x c d N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm abs_perm alpha abs_fresh trm.inject)
+apply(rule_tac x="[(name,x)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(simp add: calc_atm)
+apply(rule_tac x="[(name,x)]\<bullet>[(coname1, c)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_supp fin_supp abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma crename_ImpR':
+  assumes a: "R[a\<turnstile>c>b] = ImpR (x).<c>.N d" "c\<sharp>(R,a,b)" "x\<sharp>R" "d\<sharp>a"
+  shows "(\<exists>N'. (R = ImpR (x).<c>.N' d) \<and> N'[a\<turnstile>c>b] = N) \<or>
+         (\<exists>N'. (R = ImpR (x).<c>.N' a) \<and> b=d \<and> N'[a\<turnstile>c>b] = N)" 
+using a
+apply(nominal_induct R avoiding: x a b c d N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject abs_perm calc_atm)
+apply(rule_tac x="[(name,x)]\<bullet>[(coname1,c)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod abs_supp fin_supp)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+apply(rule_tac x="[(name,x)]\<bullet>[(coname1,c)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod abs_supp fin_supp)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma crename_ax2:
+  assumes a: "N[a\<turnstile>c>b] = Ax x c"
+  shows "\<exists>d. N = Ax x d"
+using a
+apply(nominal_induct N avoiding: a b rule: trm.induct)
+apply(auto split: if_splits)
+apply(simp add: trm.inject)
+done
+
+lemma crename_interesting1:
+  assumes a: "distinct [a,b,c]"
+  shows "M[a\<turnstile>c>c][c\<turnstile>c>b] = M[c\<turnstile>c>b][a\<turnstile>c>b]"
+using a
+apply(nominal_induct M avoiding: a c b rule: trm.induct)
+apply(auto simp add: rename_fresh simp add: trm.inject alpha)
+apply(blast)
+apply(rotate_tac 12)
+apply(drule_tac x="a" in meta_spec)
+apply(rotate_tac 15)
+apply(drule_tac x="c" in meta_spec)
+apply(rotate_tac 15)
+apply(drule_tac x="b" in meta_spec)
+apply(blast)
+apply(blast)
+apply(blast)
+done
+
+lemma crename_interesting2:
+  assumes a: "a\<noteq>c" "a\<noteq>d" "a\<noteq>b" "c\<noteq>d" "b\<noteq>c"
+  shows "M[a\<turnstile>c>b][c\<turnstile>c>d] = M[c\<turnstile>c>d][a\<turnstile>c>b]"
+using a
+apply(nominal_induct M avoiding: a c b d rule: trm.induct)
+apply(auto simp add: rename_fresh simp add: trm.inject alpha)
+done
+
+lemma crename_interesting3:
+  shows "M[a\<turnstile>c>c][x\<turnstile>n>y] = M[x\<turnstile>n>y][a\<turnstile>c>c]"
+apply(nominal_induct M avoiding: a c x y rule: trm.induct)
+apply(auto simp add: rename_fresh simp add: trm.inject alpha)
+done
+
+lemma crename_credu:
+  assumes a: "(M[a\<turnstile>c>b]) \<longrightarrow>\<^isub>c M'"
+  shows "\<exists>M0. M0[a\<turnstile>c>b]=M' \<and> M \<longrightarrow>\<^isub>c M0"
+using a
+apply(nominal_induct M\<equiv>"M[a\<turnstile>c>b]" M' avoiding: M a b rule: c_redu.strong_induct)
+apply(drule sym)
+apply(drule crename_Cut)
+apply(simp)
+apply(simp)
+apply(auto)
+apply(rule_tac x="M'{a:=(x).N'}" in exI)
+apply(rule conjI)
+apply(simp add: fresh_atm abs_fresh subst_comm fresh_prod)
+apply(rule c_redu.intros)
+apply(auto dest: not_fic_crename)[1]
+apply(simp add: abs_fresh)
+apply(simp add: abs_fresh)
+apply(drule sym)
+apply(drule crename_Cut)
+apply(simp)
+apply(simp)
+apply(auto)
+apply(rule_tac x="N'{x:=<a>.M'}" in exI)
+apply(rule conjI)
+apply(simp add: fresh_atm abs_fresh subst_comm fresh_prod)
+apply(rule c_redu.intros)
+apply(auto dest: not_fin_crename)[1]
+apply(simp add: abs_fresh)
+apply(simp add: abs_fresh)
+done
+
+lemma crename_lredu:
+  assumes a: "(M[a\<turnstile>c>b]) \<longrightarrow>\<^isub>l M'"
+  shows "\<exists>M0. M0[a\<turnstile>c>b]=M' \<and> M \<longrightarrow>\<^isub>l M0"
+using a
+apply(nominal_induct M\<equiv>"M[a\<turnstile>c>b]" M' avoiding: M a b rule: l_redu.strong_induct)
+apply(drule sym)
+apply(drule crename_Cut)
+apply(simp add: fresh_prod fresh_atm)
+apply(simp)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(case_tac "aa=ba")
+apply(simp add: crename_id)
+apply(rule l_redu.intros)
+apply(simp)
+apply(simp add: fresh_atm)
+apply(assumption)
+apply(frule crename_ax2)
+apply(auto)[1]
+apply(case_tac "d=aa")
+apply(simp add: trm.inject)
+apply(rule_tac x="M'[a\<turnstile>c>aa]" in exI)
+apply(rule conjI)
+apply(rule crename_interesting1)
+apply(simp)
+apply(rule l_redu.intros)
+apply(simp)
+apply(simp add: fresh_atm)
+apply(auto dest: fic_crename simp add: fresh_prod fresh_atm)[1]
+apply(simp add: trm.inject)
+apply(rule_tac x="M'[a\<turnstile>c>b]" in exI)
+apply(rule conjI)
+apply(rule crename_interesting2)
+apply(simp)
+apply(simp)
+apply(simp)
+apply(simp)
+apply(simp)
+apply(rule l_redu.intros)
+apply(simp)
+apply(simp add: fresh_atm)
+apply(auto dest: fic_crename simp add: fresh_prod fresh_atm)[1]
+apply(drule sym)
+apply(drule crename_Cut)
+apply(simp add: fresh_prod fresh_atm)
+apply(simp add: fresh_prod fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(case_tac "aa=b")
+apply(simp add: crename_id)
+apply(rule l_redu.intros)
+apply(simp)
+apply(simp add: fresh_atm)
+apply(assumption)
+apply(frule crename_ax2)
+apply(auto)[1]
+apply(case_tac "d=aa")
+apply(simp add: trm.inject)
+apply(simp add: trm.inject)
+apply(rule_tac x="N'[x\<turnstile>n>y]" in exI)
+apply(rule conjI)
+apply(rule sym)
+apply(rule crename_interesting3)
+apply(rule l_redu.intros)
+apply(simp)
+apply(simp add: fresh_atm)
+apply(auto dest: fin_crename simp add: fresh_prod fresh_atm)[1]
+(* LNot *)
+apply(drule sym)
+apply(drule crename_Cut)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(drule crename_NotR)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(drule crename_NotL)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(rule_tac x="Cut <b>.N'b (x).N'a" in exI)
+apply(simp add: fresh_atm)[1]
+apply(rule l_redu.intros)
+apply(auto simp add: fresh_prod intro: crename_fresh_interesting2)[1]
+apply(auto simp add: fresh_atm fresh_prod intro: crename_fresh_interesting2)[1]
+apply(auto simp add: fresh_atm fresh_prod intro: crename_fresh_interesting1)[1]
+apply(auto simp add: fresh_atm fresh_prod intro: crename_fresh_interesting1)[1]
+apply(simp add: fresh_atm)
+apply(simp add: fresh_atm)
+(* LAnd1 *)
+apply(auto dest: fin_crename simp add: fresh_prod fresh_atm)[1]
+apply(drule sym)
+apply(drule crename_Cut)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto)[1]
+apply(drule crename_AndR)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(drule crename_AndL1)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(rule_tac x="Cut <a1>.M'a (x).N'a" in exI)
+apply(simp add: fresh_atm)[1]
+apply(rule l_redu.intros)
+apply(auto simp add: fresh_atm abs_fresh fresh_prod intro: crename_fresh_interesting1)[1]
+apply(auto simp add: abs_fresh fresh_atm fresh_prod intro: crename_fresh_interesting2)[1]
+apply(auto simp add: fresh_atm fresh_prod intro: crename_fresh_interesting1)[1]
+apply(auto simp add: fresh_atm fresh_prod intro: crename_fresh_interesting1)[1]
+apply(simp add: fresh_atm)
+apply(simp add: fresh_atm)
+(* LAnd2 *)
+apply(auto dest: fin_crename simp add: fresh_prod fresh_atm)[1]
+apply(drule sym)
+apply(drule crename_Cut)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto)[1]
+apply(drule crename_AndR)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(drule crename_AndL2)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(rule_tac x="Cut <a2>.N'b (x).N'a" in exI)
+apply(simp add: fresh_atm)[1]
+apply(rule l_redu.intros)
+apply(auto simp add: fresh_atm abs_fresh fresh_prod intro: crename_fresh_interesting1)[1]
+apply(auto simp add: abs_fresh fresh_atm fresh_prod intro: crename_fresh_interesting2)[1]
+apply(auto simp add: fresh_atm fresh_prod intro: crename_fresh_interesting1)[1]
+apply(auto simp add: fresh_atm fresh_prod intro: crename_fresh_interesting1)[1]
+apply(simp add: fresh_atm)
+apply(simp add: fresh_atm)
+(* LOr1 *)
+apply(auto dest: fin_crename simp add: fresh_prod fresh_atm)[1]
+apply(drule sym)
+apply(drule crename_Cut)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto)[1]
+apply(drule crename_OrL)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(drule crename_OrR1)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(auto)
+apply(rule_tac x="Cut <a>.N' (x1).M'a" in exI)
+apply(rule conjI)
+apply(simp add: abs_fresh fresh_atm)[1]
+apply(rule l_redu.intros)
+apply(auto simp add: fresh_atm abs_fresh fresh_prod intro: crename_fresh_interesting1)[1]
+apply(auto simp add: abs_fresh fresh_atm fresh_prod intro: crename_fresh_interesting2)[1]
+apply(auto simp add: abs_fresh fresh_atm fresh_prod intro: crename_fresh_interesting1)[1]
+apply(auto simp add: abs_fresh fresh_atm fresh_prod intro: crename_fresh_interesting1)[1]
+apply(simp add: fresh_atm)
+apply(simp add: fresh_atm)
+(* LOr2 *)
+apply(auto dest: fin_crename simp add: fresh_prod fresh_atm)[1]
+apply(drule sym)
+apply(drule crename_Cut)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto)[1]
+apply(drule crename_OrL)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(drule crename_OrR2)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(auto)
+apply(rule_tac x="Cut <a>.N' (x2).N'a" in exI)
+apply(rule conjI)
+apply(simp add: abs_fresh fresh_atm)[1]
+apply(rule l_redu.intros)
+apply(auto simp add: fresh_atm abs_fresh fresh_prod intro: crename_fresh_interesting1)[1]
+apply(auto simp add: abs_fresh fresh_atm fresh_prod intro: crename_fresh_interesting2)[1]
+apply(auto simp add: abs_fresh fresh_atm fresh_prod intro: crename_fresh_interesting1)[1]
+apply(auto simp add: abs_fresh fresh_atm fresh_prod intro: crename_fresh_interesting1)[1]
+apply(simp add: fresh_atm)
+apply(simp add: fresh_atm)
+(* ImpL *)
+apply(auto dest: fin_crename simp add: fresh_prod fresh_atm)[1]
+apply(drule sym)
+apply(drule crename_Cut)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm abs_supp fin_supp)
+apply(auto)[1]
+apply(drule crename_ImpL)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(drule crename_ImpR)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(rule_tac x="Cut <a>.(Cut <c>.M'a (x).N') (y).N'a" in exI)
+apply(rule conjI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(rule l_redu.intros)
+apply(auto simp add: fresh_atm abs_fresh abs_supp fin_supp fresh_prod intro: crename_fresh_interesting2)[1]
+apply(auto simp add: abs_fresh fresh_atm abs_supp fin_supp fresh_prod intro: crename_fresh_interesting1)[1]
+apply(auto simp add: abs_fresh fresh_atm abs_supp fin_supp fresh_prod intro: crename_fresh_interesting2)[1]
+apply(auto simp add: abs_fresh fresh_atm abs_supp fin_supp fresh_prod intro: crename_fresh_interesting1)[1]
+apply(auto simp add: abs_fresh fresh_atm abs_supp fin_supp fresh_prod intro: crename_fresh_interesting1)[1]
+apply(auto simp add: abs_fresh fresh_atm abs_supp fin_supp fresh_prod intro: crename_fresh_interesting1)[1]
+done
+
+lemma crename_aredu:
+  assumes a: "(M[a\<turnstile>c>b]) \<longrightarrow>\<^isub>a M'" "a\<noteq>b"
+  shows "\<exists>M0. M0[a\<turnstile>c>b]=M' \<and> M \<longrightarrow>\<^isub>a M0"
+using a
+apply(nominal_induct M\<equiv>"M[a\<turnstile>c>b]" M' avoiding: M a b rule: a_redu.strong_induct)
+apply(simp)
+apply(drule  crename_lredu)
+apply(blast)
+apply(simp)
+apply(drule  crename_credu)
+apply(blast)
+(* Cut *)
+apply(drule sym)
+apply(drule crename_Cut)
+apply(simp)
+apply(simp)
+apply(auto)[1]
+apply(drule_tac x="M'a" in meta_spec)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="b" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="Cut <a>.M0 (x).N'" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(rule conjI)
+apply(rule trans)
+apply(rule crename.simps)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(drule crename_fresh_interesting2)
+apply(simp add: fresh_a_redu)
+apply(simp)
+apply(auto)[1]
+apply(drule sym)
+apply(drule crename_Cut)
+apply(simp)
+apply(simp)
+apply(auto)[1]
+apply(drule_tac x="N'a" in meta_spec)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="b" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="Cut <a>.M' (x).M0" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(rule conjI)
+apply(rule trans)
+apply(rule crename.simps)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm fresh_prod)[1]
+apply(drule crename_fresh_interesting1)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp add: fresh_a_redu)
+apply(simp)
+apply(simp)
+apply(auto)[1]
+(* NotL *)
+apply(drule sym)
+apply(drule crename_NotL)
+apply(simp)
+apply(auto)[1]
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="b" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="NotL <a>.M0 x" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+(* NotR *)
+apply(drule sym)
+apply(frule crename_NotR_aux)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule crename_NotR')
+apply(simp)
+apply(simp add: fresh_atm)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="b" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="NotR (x).M0 a" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(auto)[1]
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="a" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="NotR (x).M0 aa" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+(* AndR *)
+apply(drule sym)
+apply(frule crename_AndR_aux)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule crename_AndR')
+apply(simp add: fresh_prod fresh_atm)
+apply(simp add: fresh_atm)
+apply(simp add: fresh_atm)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule_tac x="M'a" in meta_spec)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="ba" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="AndR <a>.M0 <b>.N' c" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(rule trans)
+apply(rule crename.simps)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto intro: fresh_a_redu)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(drule_tac x="M'a" in meta_spec)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="c" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="AndR <a>.M0 <b>.N' aa" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(rule trans)
+apply(rule crename.simps)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto intro: fresh_a_redu)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(drule sym)
+apply(frule crename_AndR_aux)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule crename_AndR')
+apply(simp add: fresh_prod fresh_atm)
+apply(simp add: fresh_atm)
+apply(simp add: fresh_atm)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule_tac x="N'a" in meta_spec)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="ba" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="AndR <a>.M' <b>.M0 c" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(rule trans)
+apply(rule crename.simps)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm fresh_prod)[1]
+apply(auto intro: fresh_a_redu)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(drule_tac x="N'a" in meta_spec)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="c" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="AndR <a>.M' <b>.M0 aa" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(rule trans)
+apply(rule crename.simps)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm fresh_prod)[1]
+apply(auto intro: fresh_a_redu)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp)
+(* AndL1 *)
+apply(drule sym)
+apply(drule crename_AndL1)
+apply(simp)
+apply(auto)[1]
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="a" in meta_spec)
+apply(drule_tac x="b" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="AndL1 (x).M0 y" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+(* AndL2 *)
+apply(drule sym)
+apply(drule crename_AndL2)
+apply(simp)
+apply(auto)[1]
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="a" in meta_spec)
+apply(drule_tac x="b" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="AndL2 (x).M0 y" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+(* OrL *)
+apply(drule sym)
+apply(drule crename_OrL)
+apply(simp)
+apply(auto simp add: fresh_atm fresh_prod)[1]
+apply(auto simp add: fresh_atm fresh_prod)[1]
+apply(auto)[1]
+apply(drule_tac x="M'a" in meta_spec)
+apply(drule_tac x="a" in meta_spec)
+apply(drule_tac x="b" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="OrL (x).M0 (y).N' z" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(rule trans)
+apply(rule crename.simps)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm fresh_prod)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto intro: fresh_a_redu)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp)
+apply(drule sym)
+apply(drule crename_OrL)
+apply(simp)
+apply(auto simp add: fresh_atm fresh_prod)[1]
+apply(auto simp add: fresh_atm fresh_prod)[1]
+apply(auto)[1]
+apply(drule_tac x="N'a" in meta_spec)
+apply(drule_tac x="a" in meta_spec)
+apply(drule_tac x="b" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="OrL (x).M' (y).M0 z" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(rule trans)
+apply(rule crename.simps)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm fresh_prod)[1]
+apply(auto intro: fresh_a_redu)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp)
+apply(simp)
+(* OrR1 *)
+apply(drule sym)
+apply(frule crename_OrR1_aux)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule crename_OrR1')
+apply(simp)
+apply(simp add: fresh_atm)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="ba" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="OrR1 <a>.M0 b" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(auto)[1]
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="b" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="OrR1 <a>.M0 aa" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+(* OrR2 *)
+apply(drule sym)
+apply(frule crename_OrR2_aux)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule crename_OrR2')
+apply(simp)
+apply(simp add: fresh_atm)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="ba" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="OrR2 <a>.M0 b" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(auto)[1]
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="b" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="OrR2 <a>.M0 aa" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+(* ImpL *)
+apply(drule sym)
+apply(drule crename_ImpL)
+apply(simp)
+apply(simp)
+apply(auto)[1]
+apply(drule_tac x="M'a" in meta_spec)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="b" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="ImpL <a>.M0 (x).N' y" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(rule trans)
+apply(rule crename.simps)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm fresh_prod)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto intro: fresh_a_redu)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(drule sym)
+apply(drule crename_ImpL)
+apply(simp)
+apply(simp)
+apply(auto)[1]
+apply(drule_tac x="N'a" in meta_spec)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="b" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="ImpL <a>.M' (x).M0 y" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(rule trans)
+apply(rule crename.simps)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm fresh_prod)[1]
+apply(auto intro: fresh_a_redu)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp)
+(* ImpR *)
+apply(drule sym)
+apply(frule crename_ImpR_aux)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule crename_ImpR')
+apply(simp)
+apply(simp add: fresh_atm)
+apply(simp add: fresh_atm)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="ba" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="ImpR (x).<a>.M0 b" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(auto)[1]
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="aa" in meta_spec)
+apply(drule_tac x="b" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="ImpR (x).<a>.M0 aa" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+done
+
+lemma SNa_preserved_renaming1:
+  assumes a: "SNa M"
+  shows "SNa (M[a\<turnstile>c>b])"
+using a
+apply(induct rule: SNa_induct)
+apply(case_tac "a=b")
+apply(simp add: crename_id)
+apply(rule SNaI)
+apply(drule crename_aredu)
+apply(blast)+
+done
+
+lemma nrename_interesting1:
+  assumes a: "distinct [x,y,z]"
+  shows "M[x\<turnstile>n>z][z\<turnstile>n>y] = M[z\<turnstile>n>y][x\<turnstile>n>y]"
+using a
+apply(nominal_induct M avoiding: x y z rule: trm.induct)
+apply(auto simp add: rename_fresh simp add: trm.inject alpha)
+apply(blast)
+apply(blast)
+apply(rotate_tac 12)
+apply(drule_tac x="x" in meta_spec)
+apply(rotate_tac 15)
+apply(drule_tac x="y" in meta_spec)
+apply(rotate_tac 15)
+apply(drule_tac x="z" in meta_spec)
+apply(blast)
+apply(rotate_tac 11)
+apply(drule_tac x="x" in meta_spec)
+apply(rotate_tac 14)
+apply(drule_tac x="y" in meta_spec)
+apply(rotate_tac 14)
+apply(drule_tac x="z" in meta_spec)
+apply(blast)
+done
+
+lemma nrename_interesting2:
+  assumes a: "x\<noteq>z" "x\<noteq>u" "x\<noteq>y" "z\<noteq>u" "y\<noteq>z"
+  shows "M[x\<turnstile>n>y][z\<turnstile>n>u] = M[z\<turnstile>n>u][x\<turnstile>n>y]"
+using a
+apply(nominal_induct M avoiding: x y z u rule: trm.induct)
+apply(auto simp add: rename_fresh simp add: trm.inject alpha)
+done
+
+lemma not_fic_nrename_aux:
+  assumes a: "fic M c" 
+  shows "fic (M[x\<turnstile>n>y]) c" 
+using a
+apply(nominal_induct M avoiding: c x y rule: trm.induct)
+apply(auto dest!: fic_elims intro!: fic.intros simp add: fresh_prod fresh_atm rename_fresh abs_fresh)
+done
+
+lemma not_fic_nrename:
+  assumes a: "\<not>(fic (M[x\<turnstile>n>y]) c)" 
+  shows "\<not>(fic M c)" 
+using a
+apply(auto dest:  not_fic_nrename_aux)
+done
+
+lemma fin_nrename:
+  assumes a: "fin M z" "z\<sharp>(x,y)"
+  shows "fin (M[x\<turnstile>n>y]) z" 
+using a
+apply(nominal_induct M avoiding: x y z rule: trm.induct)
+apply(auto dest!: fin_elims intro!: fin.intros simp add: fresh_prod fresh_atm rename_fresh abs_fresh
+           split: if_splits)
+done
+
+lemma nrename_fresh_interesting1:
+  fixes z::"name"
+  assumes a: "z\<sharp>(M[x\<turnstile>n>y])" "z\<sharp>(x,y)"
+  shows "z\<sharp>M"
+using a
+apply(nominal_induct M avoiding: x y z rule: trm.induct)
+apply(auto split: if_splits simp add: abs_fresh abs_supp fin_supp)
+done
+
+lemma nrename_fresh_interesting2:
+  fixes c::"coname"
+  assumes a: "c\<sharp>(M[x\<turnstile>n>y])" 
+  shows "c\<sharp>M"
+using a
+apply(nominal_induct M avoiding: x y c rule: trm.induct)
+apply(auto split: if_splits simp add: abs_fresh abs_supp fin_supp fresh_atm)
+done
+
+lemma fin_nrename2:
+  assumes a: "fin (M[x\<turnstile>n>y]) z" "z\<sharp>(x,y)"
+  shows "fin M z" 
+using a
+apply(nominal_induct M avoiding: x y z rule: trm.induct)
+apply(auto dest!: fin_elims intro!: fin.intros simp add: fresh_prod fresh_atm rename_fresh abs_fresh
+           split: if_splits)
+apply(auto dest: nrename_fresh_interesting1 simp add: fresh_atm fresh_prod)
+done
+
+lemma nrename_Cut:
+  assumes a: "R[x\<turnstile>n>y] = Cut <c>.M (z).N" "c\<sharp>(N,R)" "z\<sharp>(x,y,M,R)"
+  shows "\<exists>M' N'. R = Cut <c>.M' (z).N' \<and> M'[x\<turnstile>n>y] = M \<and> N'[x\<turnstile>n>y] = N \<and> c\<sharp>N' \<and> z\<sharp>M'"
+using a
+apply(nominal_induct R avoiding: c y x z M N rule: trm.induct)
+apply(auto split: if_splits)
+apply(simp add: trm.inject)
+apply(auto simp add: alpha fresh_atm)
+apply(rule_tac x="[(coname,c)]\<bullet>trm1" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(rule_tac x="[(name,z)]\<bullet>trm2" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(rule conjI)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+apply(auto simp add: fresh_atm)[1]
+apply(drule sym)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma nrename_NotR:
+  assumes a: "R[x\<turnstile>n>y] = NotR (z).N c" "z\<sharp>(R,x,y)" 
+  shows "\<exists>N'. (R = NotR (z).N' c) \<and> N'[x\<turnstile>n>y] = N" 
+using a
+apply(nominal_induct R avoiding: x y c z N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+apply(rule_tac x="[(name,z)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma nrename_NotL:
+  assumes a: "R[x\<turnstile>n>y] = NotL <c>.N z" "c\<sharp>R" "z\<sharp>(x,y)"
+  shows "\<exists>N'. (R = NotL <c>.N' z) \<and> N'[x\<turnstile>n>y] = N" 
+using a
+apply(nominal_induct R avoiding: x y c z N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+apply(rule_tac x="[(coname,c)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma nrename_NotL':
+  assumes a: "R[x\<turnstile>n>y] = NotL <c>.N u" "c\<sharp>R" "x\<noteq>y" 
+  shows "(\<exists>N'. (R = NotL <c>.N' u) \<and> N'[x\<turnstile>n>y] = N) \<or> (\<exists>N'. (R = NotL <c>.N' x) \<and> y=u \<and> N'[x\<turnstile>n>y] = N)"
+using a
+apply(nominal_induct R avoiding: y u c x N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm abs_fresh alpha trm.inject)
+apply(rule_tac x="[(coname,c)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+apply(rule_tac x="[(coname,c)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma nrename_NotL_aux:
+  assumes a: "R[x\<turnstile>n>y] = NotL <c>.N u" 
+  shows "(x=u \<and> x=y) \<or> (x\<noteq>u)" 
+using a
+apply(nominal_induct R avoiding: y u c x N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+done
+
+lemma nrename_AndL1:
+  assumes a: "R[x\<turnstile>n>y] = AndL1 (z).N u" "z\<sharp>(R,x,y)" "u\<sharp>(x,y)"
+  shows "\<exists>N'. (R = AndL1 (z).N' u) \<and> N'[x\<turnstile>n>y] = N" 
+using a
+apply(nominal_induct R avoiding: z u x y N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+apply(rule_tac x="[(name1,z)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma nrename_AndL1':
+  assumes a: "R[x\<turnstile>n>y] = AndL1 (v).N u" "v\<sharp>(R,u,x,y)" "x\<noteq>y" 
+  shows "(\<exists>N'. (R = AndL1 (v).N' u) \<and> N'[x\<turnstile>n>y] = N) \<or> (\<exists>N'. (R = AndL1 (v).N' x) \<and> y=u \<and> N'[x\<turnstile>n>y] = N)"
+using a
+apply(nominal_induct R avoiding: y u v x N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm abs_fresh alpha trm.inject)
+apply(rule_tac x="[(name1,v)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+apply(rule_tac x="[(name1,v)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma nrename_AndL1_aux:
+  assumes a: "R[x\<turnstile>n>y] = AndL1 (v).N u" 
+  shows "(x=u \<and> x=y) \<or> (x\<noteq>u)" 
+using a
+apply(nominal_induct R avoiding: y u v x N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+done
+
+lemma nrename_AndL2:
+  assumes a: "R[x\<turnstile>n>y] = AndL2 (z).N u" "z\<sharp>(R,x,y)" "u\<sharp>(x,y)"
+  shows "\<exists>N'. (R = AndL2 (z).N' u) \<and> N'[x\<turnstile>n>y] = N" 
+using a
+apply(nominal_induct R avoiding: z u x y N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+apply(rule_tac x="[(name1,z)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma nrename_AndL2':
+  assumes a: "R[x\<turnstile>n>y] = AndL2 (v).N u" "v\<sharp>(R,u,x,y)" "x\<noteq>y" 
+  shows "(\<exists>N'. (R = AndL2 (v).N' u) \<and> N'[x\<turnstile>n>y] = N) \<or> (\<exists>N'. (R = AndL2 (v).N' x) \<and> y=u \<and> N'[x\<turnstile>n>y] = N)"
+using a
+apply(nominal_induct R avoiding: y u v x N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm abs_fresh alpha trm.inject)
+apply(rule_tac x="[(name1,v)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+apply(rule_tac x="[(name1,v)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma nrename_AndL2_aux:
+  assumes a: "R[x\<turnstile>n>y] = AndL2 (v).N u" 
+  shows "(x=u \<and> x=y) \<or> (x\<noteq>u)" 
+using a
+apply(nominal_induct R avoiding: y u v x N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+done
+
+lemma nrename_AndR:
+  assumes a: "R[x\<turnstile>n>y] = AndR <c>.M <d>.N e" "c\<sharp>(d,e,N,R)" "d\<sharp>(c,e,M,R)" 
+  shows "\<exists>M' N'. R = AndR <c>.M' <d>.N' e \<and> M'[x\<turnstile>n>y] = M \<and> N'[x\<turnstile>n>y] = N \<and> c\<sharp>N' \<and> d\<sharp>M'"
+using a
+apply(nominal_induct R avoiding: x y c d e M N rule: trm.induct)
+apply(auto split: if_splits simp add: trm.inject alpha)
+apply(simp add: fresh_atm fresh_prod)
+apply(rule_tac x="[(coname1,c)]\<bullet>trm1" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(rule_tac x="[(coname1,c)]\<bullet>trm1" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(rule_tac x="[(coname2,d)]\<bullet>trm2" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+apply(drule_tac s="trm2[x\<turnstile>n>y]" in  sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma nrename_OrR1:
+  assumes a: "R[x\<turnstile>n>y] = OrR1 <c>.N d" "c\<sharp>(R,d)" 
+  shows "\<exists>N'. (R = OrR1 <c>.N' d) \<and> N'[x\<turnstile>n>y] = N" 
+using a
+apply(nominal_induct R avoiding: x y c d N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+apply(rule_tac x="[(coname1,c)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma nrename_OrR2:
+  assumes a: "R[x\<turnstile>n>y] = OrR2 <c>.N d" "c\<sharp>(R,d)" 
+  shows "\<exists>N'. (R = OrR2 <c>.N' d) \<and> N'[x\<turnstile>n>y] = N" 
+using a
+apply(nominal_induct R avoiding: x y c d N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+apply(rule_tac x="[(coname1,c)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma nrename_OrL:
+  assumes a: "R[u\<turnstile>n>v] = OrL (x).M (y).N z" "x\<sharp>(y,z,u,v,N,R)" "y\<sharp>(x,z,u,v,M,R)" "z\<sharp>(u,v)"
+  shows "\<exists>M' N'. R = OrL (x).M' (y).N' z \<and> M'[u\<turnstile>n>v] = M \<and> N'[u\<turnstile>n>v] = N \<and> x\<sharp>N' \<and> y\<sharp>M'"
+using a
+apply(nominal_induct R avoiding: u v x y z M N rule: trm.induct)
+apply(auto split: if_splits simp add: trm.inject alpha fresh_prod fresh_atm)
+apply(rule_tac x="[(name1,x)]\<bullet>trm1" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(rule_tac x="[(name2,y)]\<bullet>trm2" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+apply(drule_tac s="trm2[u\<turnstile>n>v]" in  sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma nrename_OrL':
+  assumes a: "R[x\<turnstile>n>y] = OrL (v).M (w).N u" "v\<sharp>(R,N,u,x,y)" "w\<sharp>(R,M,u,x,y)" "x\<noteq>y" 
+  shows "(\<exists>M' N'. (R = OrL (v).M' (w).N' u) \<and> M'[x\<turnstile>n>y] = M \<and> N'[x\<turnstile>n>y] = N) \<or> 
+         (\<exists>M' N'. (R = OrL (v).M' (w).N' x) \<and> y=u \<and> M'[x\<turnstile>n>y] = M \<and> N'[x\<turnstile>n>y] = N)"
+using a
+apply(nominal_induct R avoiding: y x u v w M N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm abs_fresh alpha trm.inject)
+apply(rule_tac x="[(name1,v)]\<bullet>trm1" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(rule_tac x="[(name2,w)]\<bullet>trm2" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(rule conjI)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+apply(drule_tac s="trm2[x\<turnstile>n>u]" in sym)
+apply(drule_tac pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+apply(rule_tac x="[(name1,v)]\<bullet>trm1" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(rule_tac x="[(name2,w)]\<bullet>trm2" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(rule conjI)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+apply(drule_tac s="trm2[x\<turnstile>n>y]" in sym)
+apply(drule_tac pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma nrename_OrL_aux:
+  assumes a: "R[x\<turnstile>n>y] = OrL (v).M (w).N u" 
+  shows "(x=u \<and> x=y) \<or> (x\<noteq>u)" 
+using a
+apply(nominal_induct R avoiding: y x w u v M N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+done
+
+lemma nrename_ImpL:
+  assumes a: "R[x\<turnstile>n>y] = ImpL <c>.M (u).N z" "c\<sharp>(N,R)" "u\<sharp>(y,x,z,M,R)" "z\<sharp>(x,y)"
+  shows "\<exists>M' N'. R = ImpL <c>.M' (u).N' z \<and> M'[x\<turnstile>n>y] = M \<and> N'[x\<turnstile>n>y] = N \<and> c\<sharp>N' \<and> u\<sharp>M'"
+using a
+apply(nominal_induct R avoiding: u x c y z M N rule: trm.induct)
+apply(auto split: if_splits simp add: trm.inject alpha fresh_prod fresh_atm)
+apply(rule_tac x="[(coname,c)]\<bullet>trm1" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(rule_tac x="[(name1,u)]\<bullet>trm2" in exI)
+apply(perm_simp)
+apply(auto simp add: abs_fresh fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+apply(drule_tac s="trm2[x\<turnstile>n>y]" in  sym)
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm fresh_prod fresh_atm)
+done
+
+lemma nrename_ImpL':
+  assumes a: "R[x\<turnstile>n>y] = ImpL <c>.M (w).N u" "c\<sharp>(R,N)" "w\<sharp>(R,M,u,x,y)" "x\<noteq>y" 
+  shows "(\<exists>M' N'. (R = ImpL <c>.M' (w).N' u) \<and> M'[x\<turnstile>n>y] = M \<and> N'[x\<turnstile>n>y] = N) \<or> 
+         (\<exists>M' N'. (R = ImpL <c>.M' (w).N' x) \<and> y=u \<and> M'[x\<turnstile>n>y] = M \<and> N'[x\<turnstile>n>y] = N)"
+using a
+apply(nominal_induct R avoiding: y x u c w M N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm abs_fresh alpha trm.inject)
+apply(rule_tac x="[(coname,c)]\<bullet>trm1" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(rule_tac x="[(name1,w)]\<bullet>trm2" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(rule conjI)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+apply(drule_tac s="trm2[x\<turnstile>n>u]" in sym)
+apply(drule_tac pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+apply(rule_tac x="[(coname,c)]\<bullet>trm1" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(rule_tac x="[(name1,w)]\<bullet>trm2" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(rule conjI)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(simp add: eqvts calc_atm)
+apply(drule_tac s="trm2[x\<turnstile>n>y]" in sym)
+apply(drule_tac pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma nrename_ImpL_aux:
+  assumes a: "R[x\<turnstile>n>y] = ImpL <c>.M (w).N u" 
+  shows "(x=u \<and> x=y) \<or> (x\<noteq>u)" 
+using a
+apply(nominal_induct R avoiding: y x w u c M N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm alpha abs_fresh trm.inject)
+done
+
+lemma nrename_ImpR:
+  assumes a: "R[u\<turnstile>n>v] = ImpR (x).<c>.N d" "c\<sharp>(R,d)" "x\<sharp>(R,u,v)" 
+  shows "\<exists>N'. (R = ImpR (x).<c>.N' d) \<and> N'[u\<turnstile>n>v] = N" 
+using a
+apply(nominal_induct R avoiding: u v x c d N rule: trm.induct)
+apply(auto split: if_splits simp add: fresh_prod fresh_atm abs_perm alpha abs_fresh trm.inject)
+apply(rule_tac x="[(name,x)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_fresh fresh_left calc_atm fresh_prod)
+apply(simp add: calc_atm)
+apply(rule_tac x="[(name,x)]\<bullet>[(coname1, c)]\<bullet>trm" in exI)
+apply(perm_simp)
+apply(simp add: abs_supp fin_supp abs_fresh fresh_left calc_atm fresh_prod)
+apply(drule sym)
+apply(drule pt_bij1[OF pt_coname_inst,OF at_coname_inst])
+apply(drule pt_bij1[OF pt_name_inst,OF at_name_inst])
+apply(simp add: eqvts calc_atm)
+done
+
+lemma nrename_credu:
+  assumes a: "(M[x\<turnstile>n>y]) \<longrightarrow>\<^isub>c M'"
+  shows "\<exists>M0. M0[x\<turnstile>n>y]=M' \<and> M \<longrightarrow>\<^isub>c M0"
+using a
+apply(nominal_induct M\<equiv>"M[x\<turnstile>n>y]" M' avoiding: M x y rule: c_redu.strong_induct)
+apply(drule sym)
+apply(drule nrename_Cut)
+apply(simp)
+apply(simp)
+apply(auto)
+apply(rule_tac x="M'{a:=(x).N'}" in exI)
+apply(rule conjI)
+apply(simp add: fresh_atm abs_fresh subst_comm fresh_prod)
+apply(rule c_redu.intros)
+apply(auto dest: not_fic_nrename)[1]
+apply(simp add: abs_fresh)
+apply(simp add: abs_fresh)
+apply(drule sym)
+apply(drule nrename_Cut)
+apply(simp)
+apply(simp)
+apply(auto)
+apply(rule_tac x="N'{x:=<a>.M'}" in exI)
+apply(rule conjI)
+apply(simp add: fresh_atm abs_fresh subst_comm fresh_prod)
+apply(rule c_redu.intros)
+apply(auto)
+apply(drule_tac x="xa" and y="y" in fin_nrename)
+apply(auto simp add: fresh_prod abs_fresh)
+done
+
+lemma nrename_ax2:
+  assumes a: "N[x\<turnstile>n>y] = Ax z c"
+  shows "\<exists>z. N = Ax z c"
+using a
+apply(nominal_induct N avoiding: x y rule: trm.induct)
+apply(auto split: if_splits)
+apply(simp add: trm.inject)
+done
+
+lemma fic_nrename:
+  assumes a: "fic (M[x\<turnstile>n>y]) c" 
+  shows "fic M c" 
+using a
+apply(nominal_induct M avoiding: c x y rule: trm.induct)
+apply(auto dest!: fic_elims intro!: fic.intros simp add: fresh_prod fresh_atm rename_fresh abs_fresh
+           split: if_splits)
+apply(auto dest: nrename_fresh_interesting2 simp add: fresh_prod fresh_atm)
+done
+
+lemma nrename_lredu:
+  assumes a: "(M[x\<turnstile>n>y]) \<longrightarrow>\<^isub>l M'"
+  shows "\<exists>M0. M0[x\<turnstile>n>y]=M' \<and> M \<longrightarrow>\<^isub>l M0"
+using a
+apply(nominal_induct M\<equiv>"M[x\<turnstile>n>y]" M' avoiding: M x y rule: l_redu.strong_induct)
+apply(drule sym)
+apply(drule nrename_Cut)
+apply(simp add: fresh_prod fresh_atm)
+apply(simp)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(case_tac "xa=y")
+apply(simp add: nrename_id)
+apply(rule l_redu.intros)
+apply(simp)
+apply(simp add: fresh_atm)
+apply(assumption)
+apply(frule nrename_ax2)
+apply(auto)[1]
+apply(case_tac "z=xa")
+apply(simp add: trm.inject)
+apply(simp)
+apply(rule_tac x="M'[a\<turnstile>c>b]" in exI)
+apply(rule conjI)
+apply(rule crename_interesting3)
+apply(rule l_redu.intros)
+apply(simp)
+apply(simp add: fresh_atm)
+apply(auto dest: fic_nrename simp add: fresh_prod fresh_atm)[1]
+apply(drule sym)
+apply(drule nrename_Cut)
+apply(simp add: fresh_prod fresh_atm)
+apply(simp add: fresh_prod fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(case_tac "xa=ya")
+apply(simp add: nrename_id)
+apply(rule l_redu.intros)
+apply(simp)
+apply(simp add: fresh_atm)
+apply(assumption)
+apply(frule nrename_ax2)
+apply(auto)[1]
+apply(case_tac "z=xa")
+apply(simp add: trm.inject)
+apply(rule_tac x="N'[x\<turnstile>n>xa]" in exI)
+apply(rule conjI)
+apply(rule nrename_interesting1)
+apply(auto)[1]
+apply(rule l_redu.intros)
+apply(simp)
+apply(simp add: fresh_atm)
+apply(auto dest: fin_nrename2 simp add: fresh_prod fresh_atm)[1]
+apply(simp add: trm.inject)
+apply(rule_tac x="N'[x\<turnstile>n>y]" in exI)
+apply(rule conjI)
+apply(rule nrename_interesting2)
+apply(simp_all)
+apply(rule l_redu.intros)
+apply(simp)
+apply(simp add: fresh_atm)
+apply(auto dest: fin_nrename2 simp add: fresh_prod fresh_atm)[1]
+(* LNot *)
+apply(drule sym)
+apply(drule nrename_Cut)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(drule nrename_NotR)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(drule nrename_NotL)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(rule_tac x="Cut <b>.N'b (x).N'a" in exI)
+apply(simp add: fresh_atm)[1]
+apply(rule l_redu.intros)
+apply(auto simp add: fresh_prod fresh_atm intro: nrename_fresh_interesting1)[1]
+apply(auto simp add: fresh_atm fresh_prod intro: nrename_fresh_interesting1)[1]
+apply(auto simp add: fresh_atm fresh_prod intro: nrename_fresh_interesting2)[1]
+apply(auto simp add: fresh_atm fresh_prod intro: nrename_fresh_interesting2)[1]
+apply(simp add: fresh_atm)
+apply(simp add: fresh_atm)
+(* LAnd1 *)
+apply(auto dest: fin_crename simp add: fresh_prod fresh_atm)[1]
+apply(drule sym)
+apply(drule nrename_Cut)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto)[1]
+apply(drule nrename_AndR)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(drule nrename_AndL1)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(rule_tac x="Cut <a1>.M'a (x).N'b" in exI)
+apply(simp add: fresh_atm)[1]
+apply(rule l_redu.intros)
+apply(auto simp add: fresh_atm abs_fresh fresh_prod intro: nrename_fresh_interesting2)[1]
+apply(auto simp add: abs_fresh fresh_atm fresh_prod intro: nrename_fresh_interesting1)[1]
+apply(auto simp add: fresh_atm fresh_prod intro: nrename_fresh_interesting1)[1]
+apply(auto simp add: fresh_atm fresh_prod intro: nrename_fresh_interesting1)[1]
+apply(auto simp add: fresh_atm fresh_prod intro: nrename_fresh_interesting1)[1]
+apply(simp add: fresh_atm)
+(* LAnd2 *)
+apply(auto dest: fin_crename simp add: fresh_prod fresh_atm)[1]
+apply(drule sym)
+apply(drule nrename_Cut)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto)[1]
+apply(drule nrename_AndR)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(drule nrename_AndL2)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(rule_tac x="Cut <a2>.N'a (x).N'b" in exI)
+apply(simp add: fresh_atm)[1]
+apply(rule l_redu.intros)
+apply(auto simp add: fresh_atm abs_fresh fresh_prod intro: nrename_fresh_interesting2)[1]
+apply(auto simp add: abs_fresh fresh_atm fresh_prod intro: nrename_fresh_interesting1)[1]
+apply(auto simp add: fresh_atm fresh_prod intro: nrename_fresh_interesting1)[1]
+apply(auto simp add: fresh_atm fresh_prod intro: nrename_fresh_interesting1)[1]
+apply(auto simp add: fresh_atm fresh_prod intro: nrename_fresh_interesting1)[1]
+apply(simp add: fresh_atm)
+(* LOr1 *)
+apply(auto dest: fin_crename simp add: fresh_prod fresh_atm)[1]
+apply(drule sym)
+apply(drule nrename_Cut)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto)[1]
+apply(drule nrename_OrL)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(drule nrename_OrR1)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(rule_tac x="Cut <a>.N' (x1).M'a" in exI)
+apply(rule conjI)
+apply(simp add: abs_fresh fresh_atm)[1]
+apply(rule l_redu.intros)
+apply(auto simp add: fresh_atm abs_fresh fresh_prod intro: nrename_fresh_interesting2)[1]
+apply(auto simp add: abs_fresh fresh_atm fresh_prod intro: nrename_fresh_interesting1)[1]
+apply(auto simp add: abs_fresh fresh_atm fresh_prod intro: nrename_fresh_interesting1)[1]
+apply(auto simp add: abs_fresh fresh_atm fresh_prod intro: nrename_fresh_interesting1)[1]
+apply(simp add: fresh_atm)
+apply(simp add: fresh_atm)
+(* LOr2 *)
+apply(auto dest: fin_crename simp add: fresh_prod fresh_atm)[1]
+apply(drule sym)
+apply(drule nrename_Cut)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto)[1]
+apply(drule nrename_OrL)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(drule nrename_OrR2)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(rule_tac x="Cut <a>.N' (x2).N'a" in exI)
+apply(rule conjI)
+apply(simp add: abs_fresh fresh_atm)[1]
+apply(rule l_redu.intros)
+apply(auto simp add: fresh_atm abs_fresh fresh_prod intro: nrename_fresh_interesting2)[1]
+apply(auto simp add: abs_fresh fresh_atm fresh_prod intro: nrename_fresh_interesting1)[1]
+apply(auto simp add: abs_fresh fresh_atm fresh_prod intro: nrename_fresh_interesting1)[1]
+apply(auto simp add: abs_fresh fresh_atm fresh_prod intro: nrename_fresh_interesting1)[1]
+apply(simp add: fresh_atm)
+apply(simp add: fresh_atm)
+(* ImpL *)
+apply(auto dest: fin_crename simp add: fresh_prod fresh_atm)[1]
+apply(drule sym) 
+apply(drule nrename_Cut)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm abs_supp fin_supp)
+apply(auto)[1]
+apply(drule nrename_ImpL)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(drule nrename_ImpR)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(simp add: fresh_prod abs_fresh fresh_atm)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)[1]
+apply(rule_tac x="Cut <a>.(Cut <c>.M'a (x).N') (y).N'a" in exI)
+apply(rule conjI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(rule l_redu.intros)
+apply(auto simp add: fresh_atm abs_fresh abs_supp fin_supp fresh_prod intro: nrename_fresh_interesting1)[1]
+apply(auto simp add: abs_fresh fresh_atm abs_supp fin_supp fresh_prod intro: nrename_fresh_interesting2)[1]
+apply(auto simp add: abs_fresh fresh_atm abs_supp fin_supp fresh_prod intro: nrename_fresh_interesting1)[1]
+apply(auto simp add: abs_fresh fresh_atm abs_supp fin_supp fresh_prod intro: nrename_fresh_interesting2)[1]
+apply(auto simp add: abs_fresh fresh_atm abs_supp fin_supp fresh_prod intro: nrename_fresh_interesting2)[1]
+apply(auto simp add: abs_fresh fresh_atm abs_supp fin_supp fresh_prod intro: nrename_fresh_interesting2)[1]
+done
+
+lemma nrename_aredu:
+  assumes a: "(M[x\<turnstile>n>y]) \<longrightarrow>\<^isub>a M'" "x\<noteq>y"
+  shows "\<exists>M0. M0[x\<turnstile>n>y]=M' \<and> M \<longrightarrow>\<^isub>a M0"
+using a
+apply(nominal_induct M\<equiv>"M[x\<turnstile>n>y]" M' avoiding: M x y rule: a_redu.strong_induct)
+apply(simp)
+apply(drule  nrename_lredu)
+apply(blast)
+apply(simp)
+apply(drule  nrename_credu)
+apply(blast)
+(* Cut *)
+apply(drule sym)
+apply(drule nrename_Cut)
+apply(simp)
+apply(simp)
+apply(auto)[1]
+apply(drule_tac x="M'a" in meta_spec)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="y" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="Cut <a>.M0 (x).N'" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(rule conjI)
+apply(rule trans)
+apply(rule nrename.simps)
+apply(drule nrename_fresh_interesting2)
+apply(simp add: fresh_a_redu)
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(drule nrename_fresh_interesting1)
+apply(simp add: fresh_prod fresh_atm)
+apply(simp add: fresh_a_redu)
+apply(simp)
+apply(auto)[1]
+apply(drule sym)
+apply(drule nrename_Cut)
+apply(simp)
+apply(simp)
+apply(auto)[1]
+apply(drule_tac x="N'a" in meta_spec)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="y" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="Cut <a>.M' (x).M0" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(rule conjI)
+apply(rule trans)
+apply(rule nrename.simps)
+apply(simp add: fresh_a_redu)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm fresh_prod)[1]
+apply(simp)
+apply(auto)[1]
+(* NotL *)
+apply(drule sym)
+apply(frule nrename_NotL_aux)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule nrename_NotL')
+apply(simp)
+apply(simp add: fresh_atm)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="y" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="NotL <a>.M0 x" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(auto)[1]
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="x" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="NotL <a>.M0 xa" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+(* NotR *)
+apply(drule sym)
+apply(drule nrename_NotR)
+apply(simp)
+apply(auto)[1]
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="y" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="NotR (x).M0 a" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+(* AndR *)
+apply(drule sym)
+apply(drule nrename_AndR)
+apply(simp)
+apply(auto simp add: fresh_atm fresh_prod)[1]
+apply(auto simp add: fresh_atm fresh_prod)[1]
+apply(auto)[1]
+apply(drule_tac x="M'a" in meta_spec)
+apply(drule_tac x="x" in meta_spec)
+apply(drule_tac x="y" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="AndR <a>.M0 <b>.N' c" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(rule trans)
+apply(rule nrename.simps)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm fresh_prod)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto intro: fresh_a_redu)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp)
+apply(drule sym)
+apply(drule nrename_AndR)
+apply(simp)
+apply(auto simp add: fresh_atm fresh_prod)[1]
+apply(auto simp add: fresh_atm fresh_prod)[1]
+apply(auto)[1]
+apply(drule_tac x="N'a" in meta_spec)
+apply(drule_tac x="x" in meta_spec)
+apply(drule_tac x="y" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="AndR <a>.M' <b>.M0 c" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(rule trans)
+apply(rule nrename.simps)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm fresh_prod)[1]
+apply(auto intro: fresh_a_redu)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp)
+apply(simp)
+(* AndL1 *)
+apply(drule sym)
+apply(frule nrename_AndL1_aux)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule nrename_AndL1')
+apply(simp)
+apply(simp add: fresh_atm)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="ya" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="AndL1 (x).M0 y" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(auto)[1]
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="y" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="AndL1 (x).M0 xa" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+(* AndL2 *)
+apply(drule sym)
+apply(frule nrename_AndL2_aux)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule nrename_AndL2')
+apply(simp)
+apply(simp add: fresh_atm)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="ya" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="AndL2 (x).M0 y" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(auto)[1]
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="y" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="AndL2 (x).M0 xa" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+(* OrL *)
+apply(drule sym)
+apply(frule nrename_OrL_aux)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule nrename_OrL')
+apply(simp add: fresh_prod fresh_atm)
+apply(simp add: fresh_atm)
+apply(simp add: fresh_atm)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule_tac x="M'a" in meta_spec)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="ya" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="OrL (x).M0 (y).N' z" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(rule trans)
+apply(rule nrename.simps)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto intro: fresh_a_redu)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(drule_tac x="M'a" in meta_spec)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="z" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="OrL (x).M0 (y).N' xa" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(rule trans)
+apply(rule nrename.simps)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto intro: fresh_a_redu)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(drule sym)
+apply(frule nrename_OrL_aux)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule nrename_OrL')
+apply(simp add: fresh_prod fresh_atm)
+apply(simp add: fresh_atm)
+apply(simp add: fresh_atm)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule_tac x="N'a" in meta_spec)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="ya" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="OrL (x).M' (y).M0 z" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(rule trans)
+apply(rule nrename.simps)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm fresh_prod)[1]
+apply(auto intro: fresh_a_redu)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(drule_tac x="N'a" in meta_spec)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="z" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="OrL (x).M' (y).M0 xa" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(rule trans)
+apply(rule nrename.simps)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm fresh_prod)[1]
+apply(auto intro: fresh_a_redu)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp)
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+(* OrR1 *)
+apply(drule sym)
+apply(drule nrename_OrR1)
+apply(simp)
+apply(auto)[1]
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="x" in meta_spec)
+apply(drule_tac x="y" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="OrR1 <a>.M0 b" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+(* OrR2 *)
+apply(drule sym)
+apply(drule nrename_OrR2)
+apply(simp)
+apply(auto)[1]
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="x" in meta_spec)
+apply(drule_tac x="y" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="OrR2 <a>.M0 b" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+(* ImpL *)
+apply(drule sym)
+apply(frule nrename_ImpL_aux)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule nrename_ImpL')
+apply(simp add: fresh_prod fresh_atm)
+apply(simp add: fresh_atm)
+apply(simp add: fresh_atm)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule_tac x="M'a" in meta_spec)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="ya" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="ImpL <a>.M0 (x).N' y" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(rule trans)
+apply(rule nrename.simps)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto intro: fresh_a_redu)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(drule_tac x="M'a" in meta_spec)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="y" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="ImpL <a>.M0 (x).N' xa" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(rule trans)
+apply(rule nrename.simps)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto intro: fresh_a_redu)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(drule sym)
+apply(frule nrename_ImpL_aux)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule nrename_ImpL')
+apply(simp add: fresh_prod fresh_atm)
+apply(simp add: fresh_atm)
+apply(simp add: fresh_atm)
+apply(erule disjE)
+apply(auto)[1]
+apply(drule_tac x="N'a" in meta_spec)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="ya" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="ImpL <a>.M' (x).M0 y" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(rule trans)
+apply(rule nrename.simps)
+apply(auto intro: fresh_a_redu)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(drule_tac x="N'a" in meta_spec)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="y" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="ImpL <a>.M' (x).M0 xa" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+apply(rule trans)
+apply(rule nrename.simps)
+apply(auto intro: fresh_a_redu)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(simp add: fresh_prod abs_fresh abs_supp fin_supp fresh_atm)[1]
+(* ImpR *)
+apply(drule sym)
+apply(drule nrename_ImpR)
+apply(simp)
+apply(simp)
+apply(auto)[1]
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="xa" in meta_spec)
+apply(drule_tac x="y" in meta_spec)
+apply(auto)[1]
+apply(rule_tac x="ImpR (x).<a>.M0 b" in exI)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_atm)[1]
+apply(auto)[1]
+done
+
+lemma SNa_preserved_renaming2:
+  assumes a: "SNa N"
+  shows "SNa (N[x\<turnstile>n>y])"
+using a
+apply(induct rule: SNa_induct)
+apply(case_tac "x=y")
+apply(simp add: nrename_id)
+apply(rule SNaI)
+apply(drule nrename_aredu)
+apply(blast)+
+done
+
+text {* helper-stuff to set up the induction *}
+
+abbreviation
+  SNa_set :: "trm set"
+where
+  "SNa_set \<equiv> {M. SNa M}"
+
+abbreviation
+  A_Redu_set :: "(trm\<times>trm) set"
+where
+ "A_Redu_set \<equiv> {(N,M)| M N. M \<longrightarrow>\<^isub>a N}"
+
+lemma SNa_elim:
+  assumes a: "SNa M"
+  shows "(\<forall>M. (\<forall>N. M \<longrightarrow>\<^isub>a N \<longrightarrow> P N)\<longrightarrow> P M) \<longrightarrow> P M"
+using a
+by (induct rule: SNa.induct) (blast)
+
+lemma wf_SNa_restricted:
+  shows "wf (A_Redu_set \<inter> (UNIV <*> SNa_set))"
+apply(unfold wf_def)
+apply(intro strip)
+apply(case_tac "SNa x")
+apply(simp (no_asm_use))
+apply(drule_tac P="P" in SNa_elim)
+apply(erule mp)
+apply(blast)
+(* other case *)
+apply(drule_tac x="x" in spec)
+apply(erule mp)
+apply(fast)
+done
+
+constdefs
+  SNa_Redu :: "(trm \<times> trm) set"
+  "SNa_Redu \<equiv> A_Redu_set \<inter> (UNIV <*> SNa_set)"
+
+lemma wf_SNa_Redu:
+  shows "wf SNa_Redu"
+apply(unfold SNa_Redu_def)
+apply(rule wf_SNa_restricted)
+done
+
+lemma wf_measure_triple:
+shows "wf ((measure size) <*lex*> SNa_Redu <*lex*> SNa_Redu)"
+by (auto intro: wf_SNa_Redu)
+
+lemma my_wf_induct_triple: 
+ assumes a: " wf(r1 <*lex*> r2 <*lex*> r3)"           
+ and     b: "\<And>x. \<lbrakk>\<And>y. ((fst y,fst (snd y),snd (snd y)),(fst x,fst (snd x), snd (snd x))) 
+                                    \<in> (r1 <*lex*> r2 <*lex*> r3) \<longrightarrow> P y\<rbrakk> \<Longrightarrow> P x"  
+ shows "P x"
+using a
+apply(induct x rule: wf_induct_rule)
+apply(rule b)
+apply(simp)
+done
+
+lemma my_wf_induct_triple': 
+ assumes a: " wf(r1 <*lex*> r2 <*lex*> r3)"           
+ and    b: "\<And>x1 x2 x3. \<lbrakk>\<And>y1 y2 y3. ((y1,y2,y3),(x1,x2,x3)) \<in> (r1 <*lex*> r2 <*lex*> r3) \<longrightarrow> P (y1,y2,y3)\<rbrakk> 
+             \<Longrightarrow> P (x1,x2,x3)"  
+ shows "P (x1,x2,x3)"
+apply(rule_tac my_wf_induct_triple[OF a])
+apply(case_tac x)
+apply(simp)
+apply(case_tac b)
+apply(simp)
+apply(rule b)
+apply(blast)
+done
+
+lemma my_wf_induct_triple'': 
+ assumes a: " wf(r1 <*lex*> r2 <*lex*> r3)"           
+ and     b: "\<And>x1 x2 x3. \<lbrakk>\<And>y1 y2 y3. ((y1,y2,y3),(x1,x2,x3)) \<in> (r1 <*lex*> r2 <*lex*> r3) \<longrightarrow> P y1 y2 y3\<rbrakk>
+               \<Longrightarrow> P x1 x2 x3"  
+ shows "P x1 x2 x3"
+apply(rule_tac my_wf_induct_triple'[where P="\<lambda>(x1,x2,x3). P x1 x2 x3", simplified])
+apply(rule a)
+apply(rule b)
+apply(auto)
+done
+
+lemma excluded_m:
+  assumes a: "<a>:M \<in> (\<parallel><B>\<parallel>)" "(x):N \<in> (\<parallel>(B)\<parallel>)"
+  shows "(<a>:M \<in> BINDINGc B (\<parallel>(B)\<parallel>) \<or> (x):N \<in> BINDINGn B (\<parallel><B>\<parallel>))
+      \<or>\<not>(<a>:M \<in> BINDINGc B (\<parallel>(B)\<parallel>) \<or> (x):N \<in> BINDINGn B (\<parallel><B>\<parallel>))"
+by (blast)
+
+lemma tricky_subst:
+  assumes a1: "b\<sharp>(c,N)"
+  and     a2: "z\<sharp>(x,P)"
+  and     a3: "M\<noteq>Ax z b"
+  shows "(Cut <c>.N (z).M){b:=(x).P} = Cut <c>.N (z).(M{b:=(x).P})"
+using a1 a2 a3
+apply -
+apply(generate_fresh "coname")
+apply(subgoal_tac "Cut <c>.N (z).M = Cut <ca>.([(ca,c)]\<bullet>N) (z).M")
+apply(simp)
+apply(rule trans)
+apply(rule better_Cut_substc)
+apply(simp)
+apply(simp add: abs_fresh)
+apply(simp)
+apply(subgoal_tac "b\<sharp>([(ca,c)]\<bullet>N)")
+apply(simp add: forget)
+apply(simp add: trm.inject)
+apply(simp add: fresh_left calc_atm fresh_prod fresh_atm)
+apply(simp add: trm.inject)
+apply(rule sym)
+apply(simp add: alpha fresh_prod fresh_atm)
+done
+
+text {* 3rd lemma *}
+
+lemma CUT_SNa_aux:
+  assumes a1: "<a>:M \<in> (\<parallel><B>\<parallel>)"
+  and     a2: "SNa M"
+  and     a3: "(x):N \<in> (\<parallel>(B)\<parallel>)"
+  and     a4: "SNa N"
+  shows   "SNa (Cut <a>.M (x).N)"
+using a1 a2 a3 a4
+apply(induct B M N arbitrary: a x rule: my_wf_induct_triple''[OF wf_measure_triple])
+apply(rule SNaI)
+apply(drule Cut_a_redu_elim)
+apply(erule disjE)
+(* left-inner reduction *)
+apply(erule exE)
+apply(erule conjE)+
+apply(simp)
+apply(drule_tac x="x1" in meta_spec)
+apply(drule_tac x="M'a" in meta_spec)
+apply(drule_tac x="x3" in meta_spec)
+apply(drule conjunct2)
+apply(drule mp)
+apply(rule conjI)
+apply(simp)
+apply(rule disjI1)
+apply(simp add: SNa_Redu_def)
+apply(drule_tac x="a" in spec)
+apply(drule mp)
+apply(simp add: CANDs_preserved_single)
+apply(drule mp)
+apply(simp add: a_preserves_SNa)
+apply(drule_tac x="x" in spec)
+apply(simp)
+apply(erule disjE)
+(* right-inner reduction *)
+apply(erule exE)
+apply(erule conjE)+
+apply(simp)
+apply(drule_tac x="x1" in meta_spec)
+apply(drule_tac x="x2" in meta_spec)
+apply(drule_tac x="N'" in meta_spec)
+apply(drule conjunct2)
+apply(drule mp)
+apply(rule conjI)
+apply(simp)
+apply(rule disjI2)
+apply(simp add: SNa_Redu_def)
+apply(drule_tac x="a" in spec)
+apply(drule mp)
+apply(simp add: CANDs_preserved_single)
+apply(drule mp)
+apply(assumption)
+apply(drule_tac x="x" in spec)
+apply(drule mp)
+apply(simp add: CANDs_preserved_single)
+apply(drule mp)
+apply(simp add: a_preserves_SNa)
+apply(assumption)
+apply(erule disjE)
+(******** c-reduction *********)
+apply(drule Cut_c_redu_elim)
+(* c-left reduction*)
+apply(erule disjE)
+apply(erule conjE)
+apply(frule_tac B="x1" in fic_CANDS)
+apply(simp)
+apply(erule disjE)
+(* in AXIOMSc *)
+apply(simp add: AXIOMSc_def)
+apply(erule exE)+
+apply(simp add: ctrm.inject)
+apply(simp add: alpha)
+apply(erule disjE)
+apply(simp)
+apply(rule impI)
+apply(simp)
+apply(subgoal_tac "fic (Ax y b) b")(*A*)
+apply(simp)
+(*A*)
+apply(auto)[1]
+apply(simp)
+apply(rule impI)
+apply(simp)
+apply(subgoal_tac "fic (Ax ([(a,aa)]\<bullet>y) a) a")(*B*)
+apply(simp)
+(*B*)
+apply(auto)[1]
+(* in BINDINGc *)
+apply(simp)
+apply(drule BINDINGc_elim)
+apply(simp)
+(* c-right reduction*)
+apply(erule conjE)
+apply(frule_tac B="x1" in fin_CANDS)
+apply(simp)
+apply(erule disjE)
+(* in AXIOMSc *)
+apply(simp add: AXIOMSn_def)
+apply(erule exE)+
+apply(simp add: ntrm.inject)
+apply(simp add: alpha)
+apply(erule disjE)
+apply(simp)
+apply(rule impI)
+apply(simp)
+apply(subgoal_tac "fin (Ax xa b) xa")(*A*)
+apply(simp)
+(*A*)
+apply(auto)[1]
+apply(simp)
+apply(rule impI)
+apply(simp)
+apply(subgoal_tac "fin (Ax x ([(x,xa)]\<bullet>b)) x")(*B*)
+apply(simp)
+(*B*)
+apply(auto)[1]
+(* in BINDINGc *)
+apply(simp)
+apply(drule BINDINGn_elim)
+apply(simp)
+(*********** l-reductions ************)
+apply(drule Cut_l_redu_elim)
+apply(erule disjE)
+(* ax1 *)
+apply(erule exE)
+apply(simp)
+apply(simp add: SNa_preserved_renaming1)
+apply(erule disjE)
+(* ax2 *)
+apply(erule exE)
+apply(simp add: SNa_preserved_renaming2)
+apply(erule disjE)
+(* LNot *)
+apply(erule exE)+
+apply(auto)[1]
+apply(frule_tac excluded_m)
+apply(assumption)
+apply(erule disjE)
+(* one of them in BINDING *)
+apply(erule disjE)
+apply(drule fin_elims)
+apply(drule fic_elims)
+apply(simp)
+apply(drule BINDINGc_elim)
+apply(drule_tac x="x" in spec)
+apply(drule_tac x="NotL <b>.N' x" in spec)
+apply(simp)
+apply(simp add: better_NotR_substc)
+apply(generate_fresh "coname")
+apply(subgoal_tac "fresh_fun (\<lambda>a'. Cut <a'>.NotR (y).M'a a' (x).NotL <b>.N' x) 
+                   =  Cut <c>.NotR (y).M'a c (x).NotL <b>.N' x")
+apply(simp)
+apply(subgoal_tac "Cut <c>.NotR (y).M'a c (x).NotL <b>.N' x \<longrightarrow>\<^isub>a Cut <b>.N' (y).M'a")
+apply(simp only: a_preserves_SNa)
+apply(rule al_redu)
+apply(rule better_LNot_intro)
+apply(simp)
+apply(simp)
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(simp)
+(* other case of in BINDING *)
+apply(drule fin_elims)
+apply(drule fic_elims)
+apply(simp)
+apply(drule BINDINGn_elim)
+apply(drule_tac x="a" in spec)
+apply(drule_tac x="NotR (y).M'a a" in spec)
+apply(simp)
+apply(simp add: better_NotL_substn)
+apply(generate_fresh "name")
+apply(subgoal_tac "fresh_fun (\<lambda>x'. Cut <a>.NotR (y).M'a a (x').NotL <b>.N' x') 
+                   = Cut <a>.NotR (y).M'a a (c).NotL <b>.N' c")
+apply(simp)
+apply(subgoal_tac "Cut <a>.NotR (y).M'a a (c).NotL <b>.N' c \<longrightarrow>\<^isub>a Cut <b>.N' (y).M'a")
+apply(simp only: a_preserves_SNa)
+apply(rule al_redu)
+apply(rule better_LNot_intro)
+apply(simp)
+apply(simp)
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(simp)
+(* none of them in BINDING *)
+apply(simp)
+apply(erule conjE)
+apply(frule CAND_NotR_elim)
+apply(assumption)
+apply(erule exE)
+apply(frule CAND_NotL_elim)
+apply(assumption)
+apply(erule exE)
+apply(simp only: ty.inject)
+apply(drule_tac x="B'" in meta_spec)
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="M'a" in meta_spec)
+apply(erule conjE)+
+apply(drule mp)
+apply(simp)
+apply(drule_tac x="b" in spec)
+apply(rotate_tac 13)
+apply(drule mp)
+apply(assumption)
+apply(rotate_tac 13)
+apply(drule mp)
+apply(simp add: CANDs_imply_SNa)
+apply(drule_tac x="y" in spec)
+apply(rotate_tac 13)
+apply(drule mp)
+apply(assumption)
+apply(rotate_tac 13)
+apply(drule mp)
+apply(simp add: CANDs_imply_SNa)
+apply(assumption)
+(* LAnd1 case *)
+apply(erule disjE)
+apply(erule exE)+
+apply(auto)[1]
+apply(frule_tac excluded_m)
+apply(assumption)
+apply(erule disjE)
+(* one of them in BINDING *)
+apply(erule disjE)
+apply(drule fin_elims)
+apply(drule fic_elims)
+apply(simp)
+apply(drule BINDINGc_elim)
+apply(drule_tac x="x" in spec)
+apply(drule_tac x="AndL1 (y).N' x" in spec)
+apply(simp)
+apply(simp add: better_AndR_substc)
+apply(generate_fresh "coname")
+apply(subgoal_tac "fresh_fun (\<lambda>a'. Cut <a'>.AndR <b>.M1 <c>.M2 a' (x).AndL1 (y).N' x) 
+                   = Cut <ca>.AndR <b>.M1 <c>.M2 ca (x).AndL1 (y).N' x")
+apply(simp)
+apply(subgoal_tac "Cut <ca>.AndR <b>.M1 <c>.M2 ca (x).AndL1 (y).N' x \<longrightarrow>\<^isub>a Cut <b>.M1 (y).N'")
+apply(auto intro: a_preserves_SNa)[1]
+apply(rule al_redu)
+apply(rule better_LAnd1_intro)
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(simp)
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(simp)
+(* other case of in BINDING *)
+apply(drule fin_elims)
+apply(drule fic_elims)
+apply(simp)
+apply(drule BINDINGn_elim)
+apply(drule_tac x="a" in spec)
+apply(drule_tac x="AndR <b>.M1 <c>.M2 a" in spec)
+apply(simp)
+apply(simp add: better_AndL1_substn)
+apply(generate_fresh "name")
+apply(subgoal_tac "fresh_fun (\<lambda>z'. Cut <a>.AndR <b>.M1 <c>.M2 a (z').AndL1 (y).N' z') 
+                   = Cut <a>.AndR <b>.M1 <c>.M2 a (ca).AndL1 (y).N' ca")
+apply(simp)
+apply(subgoal_tac "Cut <a>.AndR <b>.M1 <c>.M2 a (ca).AndL1 (y).N' ca \<longrightarrow>\<^isub>a Cut <b>.M1 (y).N'")
+apply(auto intro: a_preserves_SNa)[1]
+apply(rule al_redu)
+apply(rule better_LAnd1_intro)
+apply(simp add: abs_fresh fresh_prod fresh_atm) 
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(simp)
+(* none of them in BINDING *)
+apply(simp)
+apply(erule conjE)
+apply(frule CAND_AndR_elim)
+apply(assumption)
+apply(erule exE)
+apply(frule CAND_AndL1_elim)
+apply(assumption)
+apply(erule exE)+
+apply(simp only: ty.inject)
+apply(drule_tac x="B1" in meta_spec)
+apply(drule_tac x="M1" in meta_spec)
+apply(drule_tac x="N'" in meta_spec)
+apply(erule conjE)+
+apply(drule mp)
+apply(simp)
+apply(drule_tac x="b" in spec)
+apply(rotate_tac 14)
+apply(drule mp)
+apply(assumption)
+apply(rotate_tac 14)
+apply(drule mp)
+apply(simp add: CANDs_imply_SNa)
+apply(drule_tac x="y" in spec)
+apply(rotate_tac 15)
+apply(drule mp)
+apply(assumption)
+apply(rotate_tac 15)
+apply(drule mp)
+apply(simp add: CANDs_imply_SNa)
+apply(assumption)
+(* LAnd2 case *)
+apply(erule disjE)
+apply(erule exE)+
+apply(auto)[1]
+apply(frule_tac excluded_m)
+apply(assumption)
+apply(erule disjE)
+(* one of them in BINDING *)
+apply(erule disjE)
+apply(drule fin_elims)
+apply(drule fic_elims)
+apply(simp)
+apply(drule BINDINGc_elim)
+apply(drule_tac x="x" in spec)
+apply(drule_tac x="AndL2 (y).N' x" in spec)
+apply(simp)
+apply(simp add: better_AndR_substc)
+apply(generate_fresh "coname")
+apply(subgoal_tac "fresh_fun (\<lambda>a'. Cut <a'>.AndR <b>.M1 <c>.M2 a' (x).AndL2 (y).N' x) 
+                   = Cut <ca>.AndR <b>.M1 <c>.M2 ca (x).AndL2 (y).N' x")
+apply(simp)
+apply(subgoal_tac "Cut <ca>.AndR <b>.M1 <c>.M2 ca (x).AndL2 (y).N' x \<longrightarrow>\<^isub>a Cut <c>.M2 (y).N'")
+apply(auto intro: a_preserves_SNa)[1]
+apply(rule al_redu)
+apply(rule better_LAnd2_intro)
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(simp)
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(simp)
+(* other case of in BINDING *)
+apply(drule fin_elims)
+apply(drule fic_elims)
+apply(simp)
+apply(drule BINDINGn_elim)
+apply(drule_tac x="a" in spec)
+apply(drule_tac x="AndR <b>.M1 <c>.M2 a" in spec)
+apply(simp)
+apply(simp add: better_AndL2_substn)
+apply(generate_fresh "name")
+apply(subgoal_tac "fresh_fun (\<lambda>z'. Cut <a>.AndR <b>.M1 <c>.M2 a (z').AndL2 (y).N' z') 
+                   = Cut <a>.AndR <b>.M1 <c>.M2 a (ca).AndL2 (y).N' ca")
+apply(simp)
+apply(subgoal_tac "Cut <a>.AndR <b>.M1 <c>.M2 a (ca).AndL2 (y).N' ca \<longrightarrow>\<^isub>a Cut <c>.M2 (y).N'")
+apply(auto intro: a_preserves_SNa)[1]
+apply(rule al_redu)
+apply(rule better_LAnd2_intro)
+apply(simp add: abs_fresh fresh_prod fresh_atm) 
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(simp)
+(* none of them in BINDING *)
+apply(simp)
+apply(erule conjE)
+apply(frule CAND_AndR_elim)
+apply(assumption)
+apply(erule exE)
+apply(frule CAND_AndL2_elim)
+apply(assumption)
+apply(erule exE)+
+apply(simp only: ty.inject)
+apply(drule_tac x="B2" in meta_spec)
+apply(drule_tac x="M2" in meta_spec)
+apply(drule_tac x="N'" in meta_spec)
+apply(erule conjE)+
+apply(drule mp)
+apply(simp)
+apply(drule_tac x="c" in spec)
+apply(rotate_tac 14)
+apply(drule mp)
+apply(assumption)
+apply(rotate_tac 14)
+apply(drule mp)
+apply(simp add: CANDs_imply_SNa)
+apply(drule_tac x="y" in spec)
+apply(rotate_tac 15)
+apply(drule mp)
+apply(assumption)
+apply(rotate_tac 15)
+apply(drule mp)
+apply(simp add: CANDs_imply_SNa)
+apply(assumption)
+(* LOr1 case *)
+apply(erule disjE)
+apply(erule exE)+
+apply(auto)[1]
+apply(frule_tac excluded_m)
+apply(assumption)
+apply(erule disjE)
+(* one of them in BINDING *)
+apply(erule disjE)
+apply(drule fin_elims)
+apply(drule fic_elims)
+apply(simp)
+apply(drule BINDINGc_elim)
+apply(drule_tac x="x" in spec)
+apply(drule_tac x="OrL (z).M1 (y).M2 x" in spec)
+apply(simp)
+apply(simp add: better_OrR1_substc)
+apply(generate_fresh "coname")
+apply(subgoal_tac "fresh_fun (\<lambda>a'. Cut <a'>.OrR1 <b>.N' a' (x).OrL (z).M1 (y).M2 x) 
+                   = Cut <c>.OrR1 <b>.N' c (x).OrL (z).M1 (y).M2 x")
+apply(simp)
+apply(subgoal_tac "Cut <c>.OrR1 <b>.N' c (x).OrL (z).M1 (y).M2 x \<longrightarrow>\<^isub>a Cut <b>.N' (z).M1")
+apply(auto intro: a_preserves_SNa)[1]
+apply(rule al_redu)
+apply(rule better_LOr1_intro)
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(simp add: abs_fresh)
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(simp)
+(* other case of in BINDING *)
+apply(drule fin_elims)
+apply(drule fic_elims)
+apply(simp)
+apply(drule BINDINGn_elim)
+apply(drule_tac x="a" in spec)
+apply(drule_tac x="OrR1 <b>.N' a" in spec)
+apply(simp)
+apply(simp add: better_OrL_substn)
+apply(generate_fresh "name")
+apply(subgoal_tac "fresh_fun (\<lambda>z'. Cut <a>.OrR1 <b>.N' a (z').OrL (z).M1 (y).M2 z') 
+                   = Cut <a>.OrR1 <b>.N' a (c).OrL (z).M1 (y).M2 c")
+apply(simp)
+apply(subgoal_tac "Cut <a>.OrR1 <b>.N' a (c).OrL (z).M1 (y).M2 c \<longrightarrow>\<^isub>a Cut <b>.N' (z).M1")
+apply(auto intro: a_preserves_SNa)[1]
+apply(rule al_redu)
+apply(rule better_LOr1_intro)
+apply(simp add: abs_fresh fresh_prod fresh_atm) 
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(simp)
+(* none of them in BINDING *)
+apply(simp)
+apply(erule conjE)
+apply(frule CAND_OrR1_elim)
+apply(assumption)
+apply(erule exE)+
+apply(frule CAND_OrL_elim)
+apply(assumption)
+apply(erule exE)+
+apply(simp only: ty.inject)
+apply(drule_tac x="B1" in meta_spec)
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="M1" in meta_spec)
+apply(erule conjE)+
+apply(drule mp)
+apply(simp)
+apply(drule_tac x="b" in spec)
+apply(rotate_tac 15)
+apply(drule mp)
+apply(assumption)
+apply(rotate_tac 15)
+apply(drule mp)
+apply(simp add: CANDs_imply_SNa)
+apply(drule_tac x="z" in spec)
+apply(rotate_tac 15)
+apply(drule mp)
+apply(assumption)
+apply(rotate_tac 15)
+apply(drule mp)
+apply(simp add: CANDs_imply_SNa)
+apply(assumption)
+(* LOr2 case *)
+apply(erule disjE)
+apply(erule exE)+
+apply(auto)[1]
+apply(frule_tac excluded_m)
+apply(assumption)
+apply(erule disjE)
+(* one of them in BINDING *)
+apply(erule disjE)
+apply(drule fin_elims)
+apply(drule fic_elims)
+apply(simp)
+apply(drule BINDINGc_elim)
+apply(drule_tac x="x" in spec)
+apply(drule_tac x="OrL (z).M1 (y).M2 x" in spec)
+apply(simp)
+apply(simp add: better_OrR2_substc)
+apply(generate_fresh "coname")
+apply(subgoal_tac "fresh_fun (\<lambda>a'. Cut <a'>.OrR2 <b>.N' a' (x).OrL (z).M1 (y).M2 x) 
+                   = Cut <c>.OrR2 <b>.N' c (x).OrL (z).M1 (y).M2 x")
+apply(simp)
+apply(subgoal_tac "Cut <c>.OrR2 <b>.N' c (x).OrL (z).M1 (y).M2 x \<longrightarrow>\<^isub>a Cut <b>.N' (y).M2")
+apply(auto intro: a_preserves_SNa)[1]
+apply(rule al_redu)
+apply(rule better_LOr2_intro)
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(simp add: abs_fresh)
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(simp)
+(* other case of in BINDING *)
+apply(drule fin_elims)
+apply(drule fic_elims)
+apply(simp)
+apply(drule BINDINGn_elim)
+apply(drule_tac x="a" in spec)
+apply(drule_tac x="OrR2 <b>.N' a" in spec)
+apply(simp)
+apply(simp add: better_OrL_substn)
+apply(generate_fresh "name")
+apply(subgoal_tac "fresh_fun (\<lambda>z'. Cut <a>.OrR2 <b>.N' a (z').OrL (z).M1 (y).M2 z') 
+                   = Cut <a>.OrR2 <b>.N' a (c).OrL (z).M1 (y).M2 c")
+apply(simp)
+apply(subgoal_tac "Cut <a>.OrR2 <b>.N' a (c).OrL (z).M1 (y).M2 c \<longrightarrow>\<^isub>a Cut <b>.N' (y).M2")
+apply(auto intro: a_preserves_SNa)[1]
+apply(rule al_redu)
+apply(rule better_LOr2_intro)
+apply(simp add: abs_fresh fresh_prod fresh_atm) 
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(simp)
+(* none of them in BINDING *)
+apply(simp)
+apply(erule conjE)
+apply(frule CAND_OrR2_elim)
+apply(assumption)
+apply(erule exE)+
+apply(frule CAND_OrL_elim)
+apply(assumption)
+apply(erule exE)+
+apply(simp only: ty.inject)
+apply(drule_tac x="B2" in meta_spec)
+apply(drule_tac x="N'" in meta_spec)
+apply(drule_tac x="M2" in meta_spec)
+apply(erule conjE)+
+apply(drule mp)
+apply(simp)
+apply(drule_tac x="b" in spec)
+apply(rotate_tac 15)
+apply(drule mp)
+apply(assumption)
+apply(rotate_tac 15)
+apply(drule mp)
+apply(simp add: CANDs_imply_SNa)
+apply(drule_tac x="y" in spec)
+apply(rotate_tac 15)
+apply(drule mp)
+apply(assumption)
+apply(rotate_tac 15)
+apply(drule mp)
+apply(simp add: CANDs_imply_SNa)
+apply(assumption)
+(* LImp case *)
+apply(erule exE)+
+apply(auto)[1]
+apply(frule_tac excluded_m)
+apply(assumption)
+apply(erule disjE)
+(* one of them in BINDING *)
+apply(erule disjE)
+apply(drule fin_elims)
+apply(drule fic_elims)
+apply(simp)
+apply(drule BINDINGc_elim)
+apply(drule_tac x="x" in spec)
+apply(drule_tac x="ImpL <c>.N1 (y).N2 x" in spec)
+apply(simp)
+apply(simp add: better_ImpR_substc)
+apply(generate_fresh "coname")
+apply(subgoal_tac "fresh_fun (\<lambda>a'. Cut <a'>.ImpR (z).<b>.M'a a' (x).ImpL <c>.N1 (y).N2 x)
+                   = Cut <ca>.ImpR (z).<b>.M'a ca (x).ImpL <c>.N1 (y).N2 x")
+apply(simp)
+apply(subgoal_tac "Cut <ca>.ImpR (z).<b>.M'a ca (x).ImpL <c>.N1 (y).N2 x \<longrightarrow>\<^isub>a 
+                                                          Cut <b>.Cut <c>.N1 (z).M'a (y).N2")
+apply(auto intro: a_preserves_SNa)[1]
+apply(rule al_redu)
+apply(rule better_LImp_intro)
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(simp add: abs_fresh)
+apply(simp)
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(simp)
+(* other case of in BINDING *)
+apply(drule fin_elims)
+apply(drule fic_elims)
+apply(simp)
+apply(drule BINDINGn_elim)
+apply(drule_tac x="a" in spec)
+apply(drule_tac x="ImpR (z).<b>.M'a a" in spec)
+apply(simp)
+apply(simp add: better_ImpL_substn)
+apply(generate_fresh "name")
+apply(subgoal_tac "fresh_fun (\<lambda>z'. Cut <a>.ImpR (z).<b>.M'a a (z').ImpL <c>.N1 (y).N2 z')
+                   = Cut <a>.ImpR (z).<b>.M'a a (ca).ImpL <c>.N1 (y).N2 ca")
+apply(simp)
+apply(subgoal_tac "Cut <a>.ImpR (z).<b>.M'a a (ca).ImpL <c>.N1 (y).N2 ca \<longrightarrow>\<^isub>a 
+                                                          Cut <b>.Cut <c>.N1 (z).M'a (y).N2")
+apply(auto intro: a_preserves_SNa)[1]
+apply(rule al_redu)
+apply(rule better_LImp_intro)
+apply(simp add: abs_fresh fresh_prod fresh_atm) 
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(simp)
+apply(fresh_fun_simp)
+apply(simp add: abs_fresh abs_supp fin_supp)
+apply(fresh_fun_simp)
+apply(simp add: abs_fresh abs_supp fin_supp)
+apply(simp)
+(* none of them in BINDING *)
+apply(simp)
+apply(erule conjE)
+apply(frule CAND_ImpL_elim)
+apply(assumption)
+apply(erule exE)+
+apply(frule CAND_ImpR_elim) (* check here *)
+apply(assumption)
+apply(erule exE)+
+apply(erule conjE)+
+apply(simp only: ty.inject)
+apply(erule conjE)+
+apply(case_tac "M'a=Ax z b")
+(* case Ma = Ax z b *)
+apply(rule_tac t="Cut <b>.(Cut <c>.N1 (z).M'a) (y).N2" and s="Cut <b>.(M'a{z:=<c>.N1}) (y).N2" in subst)
+apply(simp)
+apply(drule_tac x="c" in spec)
+apply(drule_tac x="N1" in spec)
+apply(drule mp)
+apply(simp)
+apply(drule_tac x="B2" in meta_spec)
+apply(drule_tac x="M'a{z:=<c>.N1}" in meta_spec)
+apply(drule_tac x="N2" in meta_spec)
+apply(drule conjunct1)
+apply(drule mp)
+apply(simp)
+apply(rotate_tac 17)
+apply(drule_tac x="b" in spec)
+apply(drule mp)
+apply(assumption)
+apply(drule mp)
+apply(simp add: CANDs_imply_SNa)
+apply(rotate_tac 17)
+apply(drule_tac x="y" in spec)
+apply(drule mp)
+apply(assumption)
+apply(drule mp)
+apply(simp add: CANDs_imply_SNa)
+apply(assumption)
+(* case Ma \<noteq> Ax z b *)
+apply(subgoal_tac "<b>:Cut <c>.N1 (z).M'a \<in> \<parallel><B2>\<parallel>") (* lemma *)
+apply(frule_tac meta_spec)
+apply(drule_tac x="B2" in meta_spec)
+apply(drule_tac x="Cut <c>.N1 (z).M'a" in meta_spec)
+apply(drule_tac x="N2" in meta_spec)
+apply(erule conjE)+
+apply(drule mp)
+apply(simp)
+apply(rotate_tac 20)
+apply(drule_tac x="b" in spec)
+apply(rotate_tac 20)
+apply(drule mp)
+apply(assumption)
+apply(rotate_tac 20)
+apply(drule mp)
+apply(simp add: CANDs_imply_SNa)
+apply(rotate_tac 20)
+apply(drule_tac x="y" in spec)
+apply(rotate_tac 20)
+apply(drule mp)
+apply(assumption)
+apply(rotate_tac 20)
+apply(drule mp)
+apply(simp add: CANDs_imply_SNa)
+apply(assumption)
+(* lemma *)
+apply(subgoal_tac "<b>:Cut <c>.N1 (z).M'a \<in> BINDINGc B2 (\<parallel>(B2)\<parallel>)") (* second lemma *)
+apply(simp add: BINDING_implies_CAND)
+(* second lemma *)
+apply(simp (no_asm) add: BINDINGc_def)
+apply(rule exI)+
+apply(rule conjI)
+apply(rule refl)
+apply(rule allI)+
+apply(rule impI)
+apply(generate_fresh "name")
+apply(rule_tac t="Cut <c>.N1 (z).M'a" and s="Cut <c>.N1 (ca).([(ca,z)]\<bullet>M'a)" in subst)
+apply(simp add: trm.inject alpha fresh_prod fresh_atm)
+apply(rule_tac t="(Cut <c>.N1 (ca).([(ca,z)]\<bullet>M'a)){b:=(xa).P}" 
+           and s="Cut <c>.N1 (ca).(([(ca,z)]\<bullet>M'a){b:=(xa).P})" in subst)
+apply(rule sym)
+apply(rule tricky_subst)
+apply(simp)
+apply(simp)
+apply(clarify)
+apply(drule pt_bij1[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm)
+apply(drule_tac x="B1" in meta_spec)
+apply(drule_tac x="N1" in meta_spec)
+apply(drule_tac x="([(ca,z)]\<bullet>M'a){b:=(xa).P}" in meta_spec)
+apply(drule conjunct1)
+apply(drule mp)
+apply(simp)
+apply(rotate_tac 19)
+apply(drule_tac x="c" in spec)
+apply(drule mp)
+apply(assumption)
+apply(drule mp)
+apply(simp add: CANDs_imply_SNa)
+apply(rotate_tac 19)
+apply(drule_tac x="ca" in spec)
+apply(subgoal_tac "(ca):([(ca,z)]\<bullet>M'a){b:=(xa).P} \<in> \<parallel>(B1)\<parallel>")(*A*)
+apply(drule mp)
+apply(assumption)
+apply(drule mp)
+apply(simp add: CANDs_imply_SNa)
+apply(assumption)
+(*A*)
+apply(drule_tac x="[(ca,z)]\<bullet>xa" in spec)
+apply(drule_tac x="[(ca,z)]\<bullet>P" in spec)
+apply(rotate_tac 19)
+apply(simp add: fresh_prod fresh_left)
+apply(drule mp)
+apply(rule conjI)
+apply(auto simp add: calc_atm)[1]
+apply(rule conjI)
+apply(auto simp add: calc_atm)[1]
+apply(drule_tac pi="[(ca,z)]" and x="(xa):P" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name)
+apply(drule_tac pi="[(ca,z)]" and X="\<parallel>(B1)\<parallel>" in pt_set_bij2[OF pt_name_inst, OF at_name_inst])
+apply(simp add: CAND_eqvt_name csubst_eqvt)
+apply(perm_simp)
+apply(simp add: calc_atm)
+done
+
+
+(* HERE *)
+
+
+(* parallel substitution *)
+
+
+lemma CUT_SNa:
+  assumes a1: "<a>:M \<in> (\<parallel><B>\<parallel>)"
+  and     a2: "(x):N \<in> (\<parallel>(B)\<parallel>)"
+  shows   "SNa (Cut <a>.M (x).N)"
+using a1 a2
+apply -
+apply(rule CUT_SNa_aux[OF a1])
+apply(simp_all add: CANDs_imply_SNa)
+done 
+
+
+fun 
+ findn :: "(name\<times>coname\<times>trm) list\<Rightarrow>name\<Rightarrow>(coname\<times>trm) option"
+where
+  "findn [] x = None"
+| "findn ((y,c,P)#\<theta>n) x = (if y=x then Some (c,P) else findn \<theta>n x)"
+
+lemma findn_eqvt[eqvt]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "(pi1\<bullet>findn \<theta>n x) = findn (pi1\<bullet>\<theta>n) (pi1\<bullet>x)" 
+  and   "(pi2\<bullet>findn \<theta>n x) = findn (pi2\<bullet>\<theta>n) (pi2\<bullet>x)"
+apply(induct \<theta>n)
+apply(auto simp add: perm_bij) 
+done
+
+lemma findn_fresh:
+  assumes a: "x\<sharp>\<theta>n"
+  shows "findn \<theta>n x = None"
+using a
+apply(induct \<theta>n)
+apply(auto simp add: fresh_list_cons fresh_atm fresh_prod)
+done
+
+fun 
+ findc :: "(coname\<times>name\<times>trm) list\<Rightarrow>coname\<Rightarrow>(name\<times>trm) option"
+where
+  "findc [] x = None"
+| "findc ((c,y,P)#\<theta>c) a = (if a=c then Some (y,P) else findc \<theta>c a)"
+
+lemma findc_eqvt[eqvt]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "(pi1\<bullet>findc \<theta>c a) = findc (pi1\<bullet>\<theta>c) (pi1\<bullet>a)" 
+  and   "(pi2\<bullet>findc \<theta>c a) = findc (pi2\<bullet>\<theta>c) (pi2\<bullet>a)"
+apply(induct \<theta>c)
+apply(auto simp add: perm_bij) 
+done
+
+lemma findc_fresh:
+  assumes a: "a\<sharp>\<theta>c"
+  shows "findc \<theta>c a = None"
+using a
+apply(induct \<theta>c)
+apply(auto simp add: fresh_list_cons fresh_atm fresh_prod)
+done
+
+abbreviation 
+ nmaps :: "(name\<times>coname\<times>trm) list \<Rightarrow> name \<Rightarrow> (coname\<times>trm) option \<Rightarrow> bool" ("_ nmaps _ to _" [55,55,55] 55) 
+where
+ "\<theta>n nmaps x to P \<equiv> (findn \<theta>n x) = P"
+
+abbreviation 
+ cmaps :: "(coname\<times>name\<times>trm) list \<Rightarrow> coname \<Rightarrow> (name\<times>trm) option \<Rightarrow> bool" ("_ cmaps _ to _" [55,55,55] 55) 
+where
+ "\<theta>c cmaps a to P \<equiv> (findc \<theta>c a) = P"
+
+lemma nmaps_fresh:
+  shows "\<theta>n nmaps x to Some (c,P) \<Longrightarrow> a\<sharp>\<theta>n \<Longrightarrow> a\<sharp>(c,P)"
+apply(induct \<theta>n)
+apply(auto simp add: fresh_list_cons fresh_prod fresh_atm)
+apply(case_tac "aa=x")
+apply(auto)
+apply(case_tac "aa=x")
+apply(auto)
+done
+
+lemma cmaps_fresh:
+  shows "\<theta>c cmaps a to Some (y,P) \<Longrightarrow> x\<sharp>\<theta>c \<Longrightarrow> x\<sharp>(y,P)"
+apply(induct \<theta>c)
+apply(auto simp add: fresh_list_cons fresh_prod fresh_atm)
+apply(case_tac "a=aa")
+apply(auto)
+apply(case_tac "a=aa")
+apply(auto)
+done
+
+lemma nmaps_false:
+  shows "\<theta>n nmaps x to Some (c,P) \<Longrightarrow> x\<sharp>\<theta>n \<Longrightarrow> False"
+apply(induct \<theta>n)
+apply(auto simp add: fresh_list_cons fresh_prod fresh_atm)
+done
+
+lemma cmaps_false:
+  shows "\<theta>c cmaps c to Some (x,P) \<Longrightarrow> c\<sharp>\<theta>c \<Longrightarrow> False"
+apply(induct \<theta>c)
+apply(auto simp add: fresh_list_cons fresh_prod fresh_atm)
+done
+
+fun 
+ lookupa :: "name\<Rightarrow>coname\<Rightarrow>(coname\<times>name\<times>trm) list\<Rightarrow>trm"
+where
+  "lookupa x a [] = Ax x a"
+| "lookupa x a ((c,y,P)#\<theta>c) = (if a=c then Cut <a>.Ax x a (y).P else lookupa x a \<theta>c)"
+
+lemma lookupa_eqvt[eqvt]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "(pi1\<bullet>(lookupa x a \<theta>c)) = lookupa (pi1\<bullet>x) (pi1\<bullet>a) (pi1\<bullet>\<theta>c)"
+  and   "(pi2\<bullet>(lookupa x a \<theta>c)) = lookupa (pi2\<bullet>x) (pi2\<bullet>a) (pi2\<bullet>\<theta>c)"
+apply -
+apply(induct \<theta>c)
+apply(auto simp add: eqvts)
+apply(induct \<theta>c)
+apply(auto simp add: eqvts)
+done
+
+lemma lookupa_fire:
+  assumes a: "\<theta>c cmaps a to Some (y,P)"
+  shows "(lookupa x a \<theta>c) = Cut <a>.Ax x a (y).P"
+using a
+apply(induct \<theta>c arbitrary: x a y P)
+apply(auto)
+done
+
+fun 
+ lookupb :: "name\<Rightarrow>coname\<Rightarrow>(coname\<times>name\<times>trm) list\<Rightarrow>coname\<Rightarrow>trm\<Rightarrow>trm"
+where
+  "lookupb x a [] c P = Cut <c>.P (x).Ax x a"
+| "lookupb x a ((d,y,N)#\<theta>c) c P = (if a=d then Cut <c>.P (y).N  else lookupb x a \<theta>c c P)"
+
+lemma lookupb_eqvt[eqvt]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "(pi1\<bullet>(lookupb x a \<theta>c c P)) = lookupb (pi1\<bullet>x) (pi1\<bullet>a) (pi1\<bullet>\<theta>c) (pi1\<bullet>c) (pi1\<bullet>P)"
+  and   "(pi2\<bullet>(lookupb x a \<theta>c c P)) = lookupb (pi2\<bullet>x) (pi2\<bullet>a) (pi2\<bullet>\<theta>c) (pi2\<bullet>c) (pi2\<bullet>P)"
+apply -
+apply(induct \<theta>c)
+apply(auto simp add: eqvts)
+apply(induct \<theta>c)
+apply(auto simp add: eqvts)
+done
+
+fun 
+  lookup :: "name\<Rightarrow>coname\<Rightarrow>(name\<times>coname\<times>trm) list\<Rightarrow>(coname\<times>name\<times>trm) list\<Rightarrow>trm"
+where
+  "lookup x a [] \<theta>c = lookupa x a \<theta>c"
+| "lookup x a ((y,c,P)#\<theta>n) \<theta>c = (if x=y then (lookupb x a \<theta>c c P) else lookup x a \<theta>n \<theta>c)"
+
+lemma lookup_eqvt[eqvt]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "(pi1\<bullet>(lookup x a \<theta>n \<theta>c)) = lookup (pi1\<bullet>x) (pi1\<bullet>a) (pi1\<bullet>\<theta>n) (pi1\<bullet>\<theta>c)"
+  and   "(pi2\<bullet>(lookup x a \<theta>n \<theta>c)) = lookup (pi2\<bullet>x) (pi2\<bullet>a) (pi2\<bullet>\<theta>n) (pi2\<bullet>\<theta>c)"
+apply -
+apply(induct \<theta>n)
+apply(auto simp add: eqvts)
+apply(induct \<theta>n)
+apply(auto simp add: eqvts)
+done
+
+fun 
+  lookupc :: "name\<Rightarrow>coname\<Rightarrow>(name\<times>coname\<times>trm) list\<Rightarrow>trm"
+where
+  "lookupc x a [] = Ax x a"
+| "lookupc x a ((y,c,P)#\<theta>n) = (if x=y then P[c\<turnstile>c>a] else lookupc x a \<theta>n)"
+
+lemma lookupc_eqvt[eqvt]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "(pi1\<bullet>(lookupc x a \<theta>n)) = lookupc (pi1\<bullet>x) (pi1\<bullet>a) (pi1\<bullet>\<theta>n)"
+  and   "(pi2\<bullet>(lookupc x a \<theta>n)) = lookupc (pi2\<bullet>x) (pi2\<bullet>a) (pi2\<bullet>\<theta>n)"
+apply -
+apply(induct \<theta>n)
+apply(auto simp add: eqvts)
+apply(induct \<theta>n)
+apply(auto simp add: eqvts)
+done
+
+fun 
+  lookupd :: "name\<Rightarrow>coname\<Rightarrow>(coname\<times>name\<times>trm) list\<Rightarrow>trm"
+where
+  "lookupd x a [] = Ax x a"
+| "lookupd x a ((c,y,P)#\<theta>c) = (if a=c then P[y\<turnstile>n>x] else lookupd x a \<theta>c)"
+
+lemma lookupd_eqvt[eqvt]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "(pi1\<bullet>(lookupd x a \<theta>n)) = lookupd (pi1\<bullet>x) (pi1\<bullet>a) (pi1\<bullet>\<theta>n)"
+  and   "(pi2\<bullet>(lookupd x a \<theta>n)) = lookupd (pi2\<bullet>x) (pi2\<bullet>a) (pi2\<bullet>\<theta>n)"
+apply -
+apply(induct \<theta>n)
+apply(auto simp add: eqvts)
+apply(induct \<theta>n)
+apply(auto simp add: eqvts)
+done
+
+lemma lookupa_fresh:
+  assumes a: "a\<sharp>\<theta>c"
+  shows "lookupa y a \<theta>c = Ax y a"
+using a
+apply(induct \<theta>c)
+apply(auto simp add: fresh_prod fresh_list_cons fresh_atm)
+done
+
+lemma lookupa_csubst:
+  assumes a: "a\<sharp>\<theta>c"
+  shows "Cut <a>.Ax y a (x).P = (lookupa y a \<theta>c){a:=(x).P}"
+using a by (simp add: lookupa_fresh)
+
+lemma lookupa_freshness:
+  fixes a::"coname"
+  and   x::"name"
+  shows "a\<sharp>(\<theta>c,c) \<Longrightarrow> a\<sharp>lookupa y c \<theta>c"
+  and   "x\<sharp>(\<theta>c,y) \<Longrightarrow> x\<sharp>lookupa y c \<theta>c"
+apply(induct \<theta>c)
+apply(auto simp add: fresh_prod fresh_list_cons abs_fresh fresh_atm)
+done
+
+lemma lookupa_unicity:
+  assumes a: "lookupa x a \<theta>c= Ax y b" "b\<sharp>\<theta>c" "y\<sharp>\<theta>c"
+  shows "x=y \<and> a=b"
+using a
+apply(induct \<theta>c)
+apply(auto simp add: trm.inject fresh_list_cons fresh_prod fresh_atm)
+apply(case_tac "a=aa")
+apply(auto)
+apply(case_tac "a=aa")
+apply(auto)
+done
+
+lemma lookupb_csubst:
+  assumes a: "a\<sharp>(\<theta>c,c,N)"
+  shows "Cut <c>.N (x).P = (lookupb y a \<theta>c c N){a:=(x).P}"
+using a
+apply(induct \<theta>c)
+apply(auto simp add: fresh_list_cons fresh_atm fresh_prod)
+apply(rule sym)
+apply(generate_fresh "name")
+apply(generate_fresh "coname")
+apply(subgoal_tac "Cut <c>.N (y).Ax y a = Cut <caa>.([(caa,c)]\<bullet>N) (ca).Ax ca a")
+apply(simp)
+apply(rule trans)
+apply(rule better_Cut_substc)
+apply(simp)
+apply(simp add: abs_fresh)
+apply(simp)
+apply(subgoal_tac "a\<sharp>([(caa,c)]\<bullet>N)")
+apply(simp add: forget)
+apply(simp add: trm.inject)
+apply(simp add: fresh_left calc_atm fresh_prod fresh_atm)
+apply(simp add: trm.inject)
+apply(rule conjI)
+apply(rule sym)
+apply(simp add: alpha fresh_prod fresh_atm)
+apply(simp add: alpha calc_atm fresh_prod fresh_atm)
+done
+
+lemma lookupb_freshness:
+  fixes a::"coname"
+  and   x::"name"
+  shows "a\<sharp>(\<theta>c,c,b,P) \<Longrightarrow> a\<sharp>lookupb y c \<theta>c b P"
+  and   "x\<sharp>(\<theta>c,y,P) \<Longrightarrow> x\<sharp>lookupb y c \<theta>c b P"
+apply(induct \<theta>c)
+apply(auto simp add: fresh_prod fresh_list_cons abs_fresh fresh_atm)
+done
+
+lemma lookupb_unicity:
+  assumes a: "lookupb x a \<theta>c c P = Ax y b" "b\<sharp>(\<theta>c,c,P)" "y\<sharp>\<theta>c"
+  shows "x=y \<and> a=b"
+using a
+apply(induct \<theta>c)
+apply(auto simp add: fresh_list_cons fresh_prod fresh_atm)
+apply(case_tac "a=aa")
+apply(auto)
+apply(case_tac "a=aa")
+apply(auto)
+done
+
+lemma lookupb_lookupa:
+  assumes a: "x\<sharp>\<theta>c"
+  shows "lookupb x c \<theta>c a P = (lookupa x c \<theta>c){x:=<a>.P}"
+using a
+apply(induct \<theta>c)
+apply(auto simp add: fresh_list_cons fresh_prod)
+apply(generate_fresh "coname")
+apply(generate_fresh "name")
+apply(subgoal_tac "Cut <c>.Ax x c (aa).b = Cut <ca>.Ax x ca (caa).([(caa,aa)]\<bullet>b)")
+apply(simp)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substn)
+apply(simp add: abs_fresh)
+apply(simp)
+apply(simp)
+apply(subgoal_tac "x\<sharp>([(caa,aa)]\<bullet>b)")
+apply(simp add: forget)
+apply(simp add: trm.inject)
+apply(auto simp add: fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(simp add: trm.inject)
+apply(rule conjI)
+apply(simp add: alpha calc_atm fresh_atm fresh_prod)
+apply(rule sym)
+apply(simp add: alpha calc_atm fresh_atm fresh_prod)
+done
+
+lemma lookup_csubst:
+  assumes a: "a\<sharp>(\<theta>n,\<theta>c)"
+  shows "lookup y c \<theta>n ((a,x,P)#\<theta>c) = (lookup y c \<theta>n \<theta>c){a:=(x).P}"
+using a
+apply(induct \<theta>n)
+apply(auto simp add: fresh_prod fresh_list_cons)
+apply(simp add: lookupa_csubst)
+apply(simp add: lookupa_freshness forget fresh_atm fresh_prod)
+apply(rule lookupb_csubst)
+apply(simp)
+apply(auto simp add: lookupb_freshness forget fresh_atm fresh_prod)
+done
+
+lemma lookup_fresh:
+  assumes a: "x\<sharp>(\<theta>n,\<theta>c)"
+  shows "lookup x c \<theta>n \<theta>c = lookupa x c \<theta>c"
+using a
+apply(induct \<theta>n)
+apply(auto simp add: fresh_prod fresh_list_cons fresh_atm)
+done
+
+lemma lookup_unicity:
+  assumes a: "lookup x a \<theta>n \<theta>c= Ax y b" "b\<sharp>(\<theta>c,\<theta>n)" "y\<sharp>(\<theta>c,\<theta>n)"
+  shows "x=y \<and> a=b"
+using a
+apply(induct \<theta>n)
+apply(auto simp add: trm.inject fresh_list_cons fresh_prod fresh_atm)
+apply(drule lookupa_unicity)
+apply(simp)+
+apply(drule lookupa_unicity)
+apply(simp)+
+apply(case_tac "x=aa")
+apply(auto)
+apply(drule lookupb_unicity)
+apply(simp add: fresh_atm)
+apply(simp)
+apply(simp)
+apply(case_tac "x=aa")
+apply(auto)
+apply(drule lookupb_unicity)
+apply(simp add: fresh_atm)
+apply(simp)
+apply(simp)
+done
+
+lemma lookup_freshness:
+  fixes a::"coname"
+  and   x::"name"
+  shows "a\<sharp>(c,\<theta>c,\<theta>n) \<Longrightarrow> a\<sharp>lookup y c \<theta>n \<theta>c"
+  and   "x\<sharp>(y,\<theta>c,\<theta>n) \<Longrightarrow> x\<sharp>lookup y c \<theta>n \<theta>c"   
+apply(induct \<theta>n)
+apply(auto simp add: fresh_prod fresh_list_cons abs_fresh fresh_atm)
+apply(simp add: fresh_atm fresh_prod lookupa_freshness)
+apply(simp add: fresh_atm fresh_prod lookupa_freshness)
+apply(simp add: fresh_atm fresh_prod lookupb_freshness)
+apply(simp add: fresh_atm fresh_prod lookupb_freshness)
+done
+
+lemma lookupc_freshness:
+  fixes a::"coname"
+  and   x::"name"
+  shows "a\<sharp>(\<theta>c,c) \<Longrightarrow> a\<sharp>lookupc y c \<theta>c"
+  and   "x\<sharp>(\<theta>c,y) \<Longrightarrow> x\<sharp>lookupc y c \<theta>c"
+apply(induct \<theta>c)
+apply(auto simp add: fresh_prod fresh_list_cons abs_fresh fresh_atm)
+apply(rule rename_fresh)
+apply(simp add: fresh_atm)
+apply(rule rename_fresh)
+apply(simp add: fresh_atm)
+done
+
+lemma lookupc_fresh:
+  assumes a: "y\<sharp>\<theta>n"
+  shows "lookupc y a \<theta>n = Ax y a"
+using a
+apply(induct \<theta>n)
+apply(auto simp add: fresh_prod fresh_list_cons fresh_atm)
+done
+
+lemma lookupc_nmaps:
+  assumes a: "\<theta>n nmaps x to Some (c,P)"
+  shows "lookupc x a \<theta>n = P[c\<turnstile>c>a]"
+using a
+apply(induct \<theta>n)
+apply(auto)
+done 
+
+lemma lookupc_unicity:
+  assumes a: "lookupc y a \<theta>n = Ax x b" "x\<sharp>\<theta>n"
+  shows "y=x"
+using a
+apply(induct \<theta>n)
+apply(auto simp add: trm.inject fresh_list_cons fresh_prod)
+apply(case_tac "y=aa")
+apply(auto)
+apply(subgoal_tac "x\<sharp>(ba[aa\<turnstile>c>a])")
+apply(simp add: fresh_atm)
+apply(rule rename_fresh)
+apply(simp)
+done
+
+lemma lookupd_fresh:
+  assumes a: "a\<sharp>\<theta>c"
+  shows "lookupd y a \<theta>c = Ax y a"
+using a
+apply(induct \<theta>c)
+apply(auto simp add: fresh_prod fresh_list_cons fresh_atm)
+done 
+
+lemma lookupd_unicity:
+  assumes a: "lookupd y a \<theta>c = Ax y b" "b\<sharp>\<theta>c"
+  shows "a=b"
+using a
+apply(induct \<theta>c)
+apply(auto simp add: trm.inject fresh_list_cons fresh_prod)
+apply(case_tac "a=aa")
+apply(auto)
+apply(subgoal_tac "b\<sharp>(ba[aa\<turnstile>n>y])")
+apply(simp add: fresh_atm)
+apply(rule rename_fresh)
+apply(simp)
+done
+
+lemma lookupd_freshness:
+  fixes a::"coname"
+  and   x::"name"
+  shows "a\<sharp>(\<theta>c,c) \<Longrightarrow> a\<sharp>lookupd y c \<theta>c"
+  and   "x\<sharp>(\<theta>c,y) \<Longrightarrow> x\<sharp>lookupd y c \<theta>c"
+apply(induct \<theta>c)
+apply(auto simp add: fresh_prod fresh_list_cons abs_fresh fresh_atm)
+apply(rule rename_fresh)
+apply(simp add: fresh_atm)
+apply(rule rename_fresh)
+apply(simp add: fresh_atm)
+done
+
+lemma lookupd_cmaps:
+  assumes a: "\<theta>c cmaps a to Some (x,P)"
+  shows "lookupd y a \<theta>c = P[x\<turnstile>n>y]"
+using a
+apply(induct \<theta>c)
+apply(auto)
+done 
+
+consts
+  stn :: "trm\<Rightarrow>(name\<times>coname\<times>trm) list\<Rightarrow>trm" 
+  stc :: "trm\<Rightarrow>(coname\<times>name\<times>trm) list\<Rightarrow>trm" 
+
+nominal_primrec (freshness_context: "\<theta>n::(name\<times>coname\<times>trm)")
+  "stn (Ax x a) \<theta>n = lookupc x a \<theta>n"
+  "\<lbrakk>a\<sharp>(N,\<theta>n);x\<sharp>(M,\<theta>n)\<rbrakk> \<Longrightarrow> stn (Cut <a>.M (x).N) \<theta>n = (Cut <a>.M (x).N)" 
+  "x\<sharp>\<theta>n \<Longrightarrow> stn (NotR (x).M a) \<theta>n = (NotR (x).M a)"
+  "a\<sharp>\<theta>n \<Longrightarrow>stn (NotL <a>.M x) \<theta>n = (NotL <a>.M x)"
+  "\<lbrakk>a\<sharp>(N,d,b,\<theta>n);b\<sharp>(M,d,a,\<theta>n)\<rbrakk> \<Longrightarrow> stn (AndR <a>.M <b>.N d) \<theta>n = (AndR <a>.M <b>.N d)"
+  "x\<sharp>(z,\<theta>n) \<Longrightarrow> stn (AndL1 (x).M z) \<theta>n = (AndL1 (x).M z)"
+  "x\<sharp>(z,\<theta>n) \<Longrightarrow> stn (AndL2 (x).M z) \<theta>n = (AndL2 (x).M z)"
+  "a\<sharp>(b,\<theta>n) \<Longrightarrow> stn (OrR1 <a>.M b) \<theta>n = (OrR1 <a>.M b)"
+  "a\<sharp>(b,\<theta>n) \<Longrightarrow> stn (OrR2 <a>.M b) \<theta>n = (OrR2 <a>.M b)"
+  "\<lbrakk>x\<sharp>(N,z,u,\<theta>n);u\<sharp>(M,z,x,\<theta>n)\<rbrakk> \<Longrightarrow> stn (OrL (x).M (u).N z) \<theta>n = (OrL (x).M (u).N z)"
+  "\<lbrakk>a\<sharp>(b,\<theta>n);x\<sharp>\<theta>n\<rbrakk> \<Longrightarrow> stn (ImpR (x).<a>.M b) \<theta>n = (ImpR (x).<a>.M b)"
+  "\<lbrakk>a\<sharp>(N,\<theta>n);x\<sharp>(M,z,\<theta>n)\<rbrakk> \<Longrightarrow> stn (ImpL <a>.M (x).N z) \<theta>n = (ImpL <a>.M (x).N z)"
+apply(finite_guess)+
+apply(rule TrueI)+
+apply(simp add: abs_fresh abs_supp fin_supp)+
+apply(fresh_guess)+
+done
+
+nominal_primrec (freshness_context: "\<theta>c::(coname\<times>name\<times>trm)")
+  "stc (Ax x a) \<theta>c = lookupd x a \<theta>c"
+  "\<lbrakk>a\<sharp>(N,\<theta>c);x\<sharp>(M,\<theta>c)\<rbrakk> \<Longrightarrow> stc (Cut <a>.M (x).N) \<theta>c = (Cut <a>.M (x).N)" 
+  "x\<sharp>\<theta>c \<Longrightarrow> stc (NotR (x).M a) \<theta>c = (NotR (x).M a)"
+  "a\<sharp>\<theta>c \<Longrightarrow> stc (NotL <a>.M x) \<theta>c = (NotL <a>.M x)"
+  "\<lbrakk>a\<sharp>(N,d,b,\<theta>c);b\<sharp>(M,d,a,\<theta>c)\<rbrakk> \<Longrightarrow> stc (AndR <a>.M <b>.N d) \<theta>c = (AndR <a>.M <b>.N d)"
+  "x\<sharp>(z,\<theta>c) \<Longrightarrow> stc (AndL1 (x).M z) \<theta>c = (AndL1 (x).M z)"
+  "x\<sharp>(z,\<theta>c) \<Longrightarrow> stc (AndL2 (x).M z) \<theta>c = (AndL2 (x).M z)"
+  "a\<sharp>(b,\<theta>c) \<Longrightarrow> stc (OrR1 <a>.M b) \<theta>c = (OrR1 <a>.M b)"
+  "a\<sharp>(b,\<theta>c) \<Longrightarrow> stc (OrR2 <a>.M b) \<theta>c = (OrR2 <a>.M b)"
+  "\<lbrakk>x\<sharp>(N,z,u,\<theta>c);u\<sharp>(M,z,x,\<theta>c)\<rbrakk> \<Longrightarrow> stc (OrL (x).M (u).N z) \<theta>c = (OrL (x).M (u).N z)"
+  "\<lbrakk>a\<sharp>(b,\<theta>c);x\<sharp>\<theta>c\<rbrakk> \<Longrightarrow> stc (ImpR (x).<a>.M b) \<theta>c = (ImpR (x).<a>.M b)"
+  "\<lbrakk>a\<sharp>(N,\<theta>c);x\<sharp>(M,z,\<theta>c)\<rbrakk> \<Longrightarrow> stc (ImpL <a>.M (x).N z) \<theta>c = (ImpL <a>.M (x).N z)"
+apply(finite_guess)+
+apply(rule TrueI)+
+apply(simp add: abs_fresh abs_supp fin_supp)+
+apply(fresh_guess)+
+done
+
+lemma stn_eqvt[eqvt]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "(pi1\<bullet>(stn M \<theta>n)) = stn (pi1\<bullet>M) (pi1\<bullet>\<theta>n)"
+  and   "(pi2\<bullet>(stn M \<theta>n)) = stn (pi2\<bullet>M) (pi2\<bullet>\<theta>n)"
+apply -
+apply(nominal_induct M avoiding: \<theta>n rule: trm.induct)
+apply(auto simp add: eqvts fresh_bij fresh_prod eq_bij fresh_atm)
+apply(nominal_induct M avoiding: \<theta>n rule: trm.induct)
+apply(auto simp add: eqvts fresh_bij fresh_prod eq_bij fresh_atm)
+done
+
+lemma stc_eqvt[eqvt]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "(pi1\<bullet>(stc M \<theta>c)) = stc (pi1\<bullet>M) (pi1\<bullet>\<theta>c)"
+  and   "(pi2\<bullet>(stc M \<theta>c)) = stc (pi2\<bullet>M) (pi2\<bullet>\<theta>c)"
+apply -
+apply(nominal_induct M avoiding: \<theta>c rule: trm.induct)
+apply(auto simp add: eqvts fresh_bij fresh_prod eq_bij fresh_atm)
+apply(nominal_induct M avoiding: \<theta>c rule: trm.induct)
+apply(auto simp add: eqvts fresh_bij fresh_prod eq_bij fresh_atm)
+done
+
+lemma stn_fresh:
+  fixes a::"coname"
+  and   x::"name"
+  shows "a\<sharp>(\<theta>n,M) \<Longrightarrow> a\<sharp>stn M \<theta>n"
+  and   "x\<sharp>(\<theta>n,M) \<Longrightarrow> x\<sharp>stn M \<theta>n"
+apply(nominal_induct M avoiding: \<theta>n a x rule: trm.induct)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)
+apply(rule lookupc_freshness)
+apply(simp add: fresh_atm)
+apply(rule lookupc_freshness)
+apply(simp add: fresh_atm)
+done
+
+lemma stc_fresh:
+  fixes a::"coname"
+  and   x::"name"
+  shows "a\<sharp>(\<theta>c,M) \<Longrightarrow> a\<sharp>stc M \<theta>c"
+  and   "x\<sharp>(\<theta>c,M) \<Longrightarrow> x\<sharp>stc M \<theta>c"
+apply(nominal_induct M avoiding: \<theta>c a x rule: trm.induct)
+apply(auto simp add: abs_fresh fresh_prod fresh_atm)
+apply(rule lookupd_freshness)
+apply(simp add: fresh_atm)
+apply(rule lookupd_freshness)
+apply(simp add: fresh_atm)
+done
+
+lemma option_case_eqvt1[eqvt_force]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  and   B::"(name\<times>trm) option"
+  and   r::"trm"
+  shows "(pi1\<bullet>(case B of Some (x,P) \<Rightarrow> s x P | None \<Rightarrow> r)) = 
+              (case (pi1\<bullet>B) of Some (x,P) \<Rightarrow> (pi1\<bullet>s) x P | None \<Rightarrow> (pi1\<bullet>r))"
+  and   "(pi2\<bullet>(case B of Some (x,P) \<Rightarrow> s x P| None \<Rightarrow> r)) = 
+              (case (pi2\<bullet>B) of Some (x,P) \<Rightarrow> (pi2\<bullet>s) x P | None \<Rightarrow> (pi2\<bullet>r))"
+apply(cases "B")
+apply(auto)
+apply(perm_simp)
+apply(cases "B")
+apply(auto)
+apply(perm_simp)
+done
+
+lemma option_case_eqvt2[eqvt_force]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  and   B::"(coname\<times>trm) option"
+  and   r::"trm"
+  shows "(pi1\<bullet>(case B of Some (x,P) \<Rightarrow> s x P | None \<Rightarrow> r)) = 
+              (case (pi1\<bullet>B) of Some (x,P) \<Rightarrow> (pi1\<bullet>s) x P | None \<Rightarrow> (pi1\<bullet>r))"
+  and   "(pi2\<bullet>(case B of Some (x,P) \<Rightarrow> s x P| None \<Rightarrow> r)) = 
+              (case (pi2\<bullet>B) of Some (x,P) \<Rightarrow> (pi2\<bullet>s) x P | None \<Rightarrow> (pi2\<bullet>r))"
+apply(cases "B")
+apply(auto)
+apply(perm_simp)
+apply(cases "B")
+apply(auto)
+apply(perm_simp)
+done
+
+consts
+  psubst :: "(name\<times>coname\<times>trm) list\<Rightarrow>(coname\<times>name\<times>trm) list\<Rightarrow>trm\<Rightarrow>trm" ("_,_<_>" [100,100,100] 100) 
+
+nominal_primrec (freshness_context: "(\<theta>n::(name\<times>coname\<times>trm) list,\<theta>c::(coname\<times>name\<times>trm) list)")
+  "\<theta>n,\<theta>c<Ax x a> = lookup x a \<theta>n \<theta>c" 
+  "\<lbrakk>a\<sharp>(N,\<theta>n,\<theta>c);x\<sharp>(M,\<theta>n,\<theta>c)\<rbrakk> \<Longrightarrow> \<theta>n,\<theta>c<Cut <a>.M (x).N> = 
+   Cut <a>.(if \<exists>x. M=Ax x a then stn M \<theta>n else \<theta>n,\<theta>c<M>) 
+       (x).(if \<exists>a. N=Ax x a then stc N \<theta>c else \<theta>n,\<theta>c<N>)" 
+  "x\<sharp>(\<theta>n,\<theta>c) \<Longrightarrow> \<theta>n,\<theta>c<NotR (x).M a> = 
+  (case (findc \<theta>c a) of 
+       Some (u,P) \<Rightarrow> fresh_fun (\<lambda>a'. Cut <a'>.NotR (x).(\<theta>n,\<theta>c<M>) a' (u).P) 
+     | None \<Rightarrow> NotR (x).(\<theta>n,\<theta>c<M>) a)"
+  "a\<sharp>(\<theta>n,\<theta>c) \<Longrightarrow> \<theta>n,\<theta>c<NotL <a>.M x> = 
+  (case (findn \<theta>n x) of 
+       Some (c,P) \<Rightarrow> fresh_fun (\<lambda>x'. Cut <c>.P (x').(NotL <a>.(\<theta>n,\<theta>c<M>) x')) 
+     | None \<Rightarrow> NotL <a>.(\<theta>n,\<theta>c<M>) x)"
+  "\<lbrakk>a\<sharp>(N,c,\<theta>n,\<theta>c);b\<sharp>(M,c,\<theta>n,\<theta>c);b\<noteq>a\<rbrakk> \<Longrightarrow> (\<theta>n,\<theta>c<AndR <a>.M <b>.N c>) = 
+  (case (findc \<theta>c c) of 
+       Some (x,P) \<Rightarrow> fresh_fun (\<lambda>a'. Cut <a'>.(AndR <a>.(\<theta>n,\<theta>c<M>) <b>.(\<theta>n,\<theta>c<N>) a') (x).P)
+     | None \<Rightarrow> AndR <a>.(\<theta>n,\<theta>c<M>) <b>.(\<theta>n,\<theta>c<N>) c)"
+  "x\<sharp>(z,\<theta>n,\<theta>c) \<Longrightarrow> (\<theta>n,\<theta>c<AndL1 (x).M z>) = 
+  (case (findn \<theta>n z) of 
+       Some (c,P) \<Rightarrow> fresh_fun (\<lambda>z'. Cut <c>.P (z').AndL1 (x).(\<theta>n,\<theta>c<M>) z') 
+     | None \<Rightarrow> AndL1 (x).(\<theta>n,\<theta>c<M>) z)"
+  "x\<sharp>(z,\<theta>n,\<theta>c) \<Longrightarrow> (\<theta>n,\<theta>c<AndL2 (x).M z>) = 
+  (case (findn \<theta>n z) of 
+       Some (c,P) \<Rightarrow> fresh_fun (\<lambda>z'. Cut <c>.P (z').AndL2 (x).(\<theta>n,\<theta>c<M>) z') 
+     | None \<Rightarrow> AndL2 (x).(\<theta>n,\<theta>c<M>) z)"
+  "\<lbrakk>x\<sharp>(N,z,\<theta>n,\<theta>c);u\<sharp>(M,z,\<theta>n,\<theta>c);x\<noteq>u\<rbrakk> \<Longrightarrow> (\<theta>n,\<theta>c<OrL (x).M (u).N z>) =
+  (case (findn \<theta>n z) of  
+       Some (c,P) \<Rightarrow> fresh_fun (\<lambda>z'. Cut <c>.P (z').OrL (x).(\<theta>n,\<theta>c<M>) (u).(\<theta>n,\<theta>c<N>) z') 
+     | None \<Rightarrow> OrL (x).(\<theta>n,\<theta>c<M>) (u).(\<theta>n,\<theta>c<N>) z)"
+  "a\<sharp>(b,\<theta>n,\<theta>c) \<Longrightarrow> (\<theta>n,\<theta>c<OrR1 <a>.M b>) = 
+  (case (findc \<theta>c b) of
+       Some (x,P) \<Rightarrow> fresh_fun (\<lambda>a'. Cut <a'>.OrR1 <a>.(\<theta>n,\<theta>c<M>) a' (x).P) 
+     | None \<Rightarrow> OrR1 <a>.(\<theta>n,\<theta>c<M>) b)"
+  "a\<sharp>(b,\<theta>n,\<theta>c) \<Longrightarrow> (\<theta>n,\<theta>c<OrR2 <a>.M b>) = 
+  (case (findc \<theta>c b) of
+       Some (x,P) \<Rightarrow> fresh_fun (\<lambda>a'. Cut <a'>.OrR2 <a>.(\<theta>n,\<theta>c<M>) a' (x).P) 
+     | None \<Rightarrow> OrR2 <a>.(\<theta>n,\<theta>c<M>) b)"
+  "\<lbrakk>a\<sharp>(b,\<theta>n,\<theta>c); x\<sharp>(\<theta>n,\<theta>c)\<rbrakk> \<Longrightarrow> (\<theta>n,\<theta>c<ImpR (x).<a>.M b>) = 
+  (case (findc \<theta>c b) of
+       Some (z,P) \<Rightarrow> fresh_fun (\<lambda>a'. Cut <a'>.ImpR (x).<a>.(\<theta>n,\<theta>c<M>) a' (z).P)
+     | None \<Rightarrow> ImpR (x).<a>.(\<theta>n,\<theta>c<M>) b)"
+  "\<lbrakk>a\<sharp>(N,\<theta>n,\<theta>c); x\<sharp>(z,M,\<theta>n,\<theta>c)\<rbrakk> \<Longrightarrow> (\<theta>n,\<theta>c<ImpL <a>.M (x).N z>) = 
+  (case (findn \<theta>n z) of
+       Some (c,P) \<Rightarrow> fresh_fun (\<lambda>z'. Cut <c>.P (z').ImpL <a>.(\<theta>n,\<theta>c<M>) (x).(\<theta>n,\<theta>c<N>) z') 
+     | None \<Rightarrow> ImpL <a>.(\<theta>n,\<theta>c<M>) (x).(\<theta>n,\<theta>c<N>) z)"
+apply(finite_guess)+
+apply(rule TrueI)+
+apply(simp add: abs_fresh stc_fresh)
+apply(simp add: abs_fresh stn_fresh)
+apply(case_tac "findc \<theta>c x3")
+apply(simp add: abs_fresh)
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(thin_tac "x1\<sharp>?p")
+apply(fresh_fun_simp)
+apply(drule cmaps_fresh)
+apply(auto simp add: fresh_prod)[1]
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(case_tac "findn \<theta>n x3")
+apply(simp add: abs_fresh)
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(thin_tac "x1\<sharp>?p")
+apply(fresh_fun_simp)
+apply(drule nmaps_fresh)
+apply(auto simp add: fresh_prod)[1]
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(case_tac "findc \<theta>c x5")
+apply(simp add: abs_fresh)
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(thin_tac "x1\<sharp>?p")
+apply(thin_tac "x3\<sharp>?p")
+apply(fresh_fun_simp)
+apply(drule cmaps_fresh)
+apply(auto simp add: fresh_prod)[1]
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(case_tac "findc \<theta>c x5")
+apply(simp add: abs_fresh)
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(thin_tac "x1\<sharp>?p")
+apply(thin_tac "x3\<sharp>?p")
+apply(fresh_fun_simp)
+apply(drule_tac x="x3" in cmaps_fresh)
+apply(auto simp add: fresh_prod)[1]
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(case_tac "findn \<theta>n x3")
+apply(simp add: abs_fresh)
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(thin_tac "x1\<sharp>?p")
+apply(fresh_fun_simp)
+apply(drule nmaps_fresh)
+apply(auto simp add: fresh_prod)[1]
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(case_tac "findn \<theta>n x3")
+apply(simp add: abs_fresh)
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(thin_tac "x1\<sharp>?p")
+apply(fresh_fun_simp)
+apply(drule nmaps_fresh)
+apply(auto simp add: fresh_prod)[1]
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(case_tac "findc \<theta>c x3")
+apply(simp add: abs_fresh)
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(thin_tac "x1\<sharp>?p")
+apply(fresh_fun_simp)
+apply(drule cmaps_fresh)
+apply(auto simp add: fresh_prod)[1]
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(case_tac "findc \<theta>c x3")
+apply(simp add: abs_fresh)
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(thin_tac "x1\<sharp>?p")
+apply(fresh_fun_simp)
+apply(drule cmaps_fresh)
+apply(auto simp add: fresh_prod)[1]
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(case_tac "findn \<theta>n x5")
+apply(simp add: abs_fresh)
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(thin_tac "x1\<sharp>?p")
+apply(thin_tac "x3\<sharp>?p")
+apply(fresh_fun_simp)
+apply(drule nmaps_fresh)
+apply(auto simp add: fresh_prod)[1]
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(case_tac "findn \<theta>n x5")
+apply(simp add: abs_fresh)
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(thin_tac "x1\<sharp>?p")
+apply(thin_tac "x3\<sharp>?p")
+apply(fresh_fun_simp)
+apply(drule_tac a="x3" in nmaps_fresh)
+apply(auto simp add: fresh_prod)[1]
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(case_tac "findc \<theta>c x4")
+apply(simp add: abs_fresh abs_supp fin_supp)
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(thin_tac "x1\<sharp>?p")
+apply(thin_tac "x2\<sharp>?p")
+apply(fresh_fun_simp)
+apply(drule cmaps_fresh)
+apply(auto simp add: fresh_prod)[1]
+apply(simp add: abs_fresh fresh_prod fresh_atm abs_supp fin_supp)
+apply(case_tac "findc \<theta>c x4")
+apply(simp add: abs_fresh abs_supp fin_supp)
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(thin_tac "x1\<sharp>?p")
+apply(thin_tac "x2\<sharp>?p")
+apply(fresh_fun_simp)
+apply(drule_tac x="x2" in cmaps_fresh)
+apply(auto simp add: fresh_prod)[1]
+apply(simp add: abs_fresh fresh_prod fresh_atm abs_supp fin_supp)
+apply(case_tac "findn \<theta>n x5")
+apply(simp add: abs_fresh)
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(thin_tac "x1\<sharp>?p")
+apply(thin_tac "x3\<sharp>?p")
+apply(fresh_fun_simp)
+apply(drule nmaps_fresh)
+apply(auto simp add: fresh_prod)[1]
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(case_tac "findn \<theta>n x5")
+apply(simp add: abs_fresh)
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(thin_tac "x1\<sharp>?p")
+apply(thin_tac "x3\<sharp>?p")
+apply(fresh_fun_simp)
+apply(drule_tac a="x3" in nmaps_fresh)
+apply(auto simp add: fresh_prod)[1]
+apply(simp add: abs_fresh fresh_prod fresh_atm)
+apply(fresh_guess)+
+done
+
+lemma case_cong:
+  assumes a: "B1=B2" "x1=x2" "y1=y2"
+  shows "(case B1 of None \<Rightarrow> x1 | Some (x,P) \<Rightarrow> y1 x P) = (case B2 of None \<Rightarrow> x2 | Some (x,P) \<Rightarrow> y2 x P)"
+using a
+apply(auto)
+done
+
+lemma find_maps:
+  shows "\<theta>c cmaps a to (findc \<theta>c a)"
+  and   "\<theta>n nmaps x to (findn \<theta>n x)"
+apply(auto)
+done
+
+lemma psubst_eqvt[eqvt]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "pi1\<bullet>(\<theta>n,\<theta>c<M>) = (pi1\<bullet>\<theta>n),(pi1\<bullet>\<theta>c)<(pi1\<bullet>M)>"
+  and   "pi2\<bullet>(\<theta>n,\<theta>c<M>) = (pi2\<bullet>\<theta>n),(pi2\<bullet>\<theta>c)<(pi2\<bullet>M)>"
+apply(nominal_induct M avoiding: \<theta>n \<theta>c rule: trm.induct)
+apply(auto simp add: eq_bij fresh_bij eqvts perm_pi_simp)
+apply(rule case_cong)
+apply(rule find_maps)
+apply(simp)
+apply(perm_simp add: eqvts)
+apply(rule case_cong)
+apply(rule find_maps)
+apply(simp)
+apply(perm_simp add: eqvts)
+apply(rule case_cong)
+apply(rule find_maps)
+apply(simp)
+apply(perm_simp add: eqvts)
+apply(rule case_cong)
+apply(rule find_maps)
+apply(simp)
+apply(perm_simp add: eqvts)
+apply(rule case_cong)
+apply(rule find_maps)
+apply(simp)
+apply(perm_simp add: eqvts)
+apply(rule case_cong)
+apply(rule find_maps)
+apply(simp)
+apply(perm_simp add: eqvts)
+apply(rule case_cong)
+apply(rule find_maps)
+apply(simp)
+apply(perm_simp add: eqvts)
+apply(rule case_cong)
+apply(rule find_maps)
+apply(simp)
+apply(perm_simp add: eqvts)
+apply(rule case_cong)
+apply(rule find_maps)
+apply(simp)
+apply(perm_simp add: eqvts)
+apply(rule case_cong)
+apply(rule find_maps)
+apply(simp)
+apply(perm_simp add: eqvts)
+apply(rule case_cong)
+apply(rule find_maps)
+apply(simp)
+apply(perm_simp add: eqvts)
+apply(rule case_cong)
+apply(rule find_maps)
+apply(simp)
+apply(perm_simp add: eqvts)
+apply(rule case_cong)
+apply(rule find_maps)
+apply(simp)
+apply(perm_simp add: eqvts)
+apply(rule case_cong)
+apply(rule find_maps)
+apply(simp)
+apply(perm_simp add: eqvts)
+apply(rule case_cong)
+apply(rule find_maps)
+apply(simp)
+apply(perm_simp add: eqvts)
+apply(rule case_cong)
+apply(rule find_maps)
+apply(simp)
+apply(perm_simp add: eqvts)
+apply(rule case_cong)
+apply(rule find_maps)
+apply(simp)
+apply(perm_simp add: eqvts)
+apply(rule case_cong)
+apply(rule find_maps)
+apply(simp)
+apply(perm_simp add: eqvts)
+apply(rule case_cong)
+apply(rule find_maps)
+apply(simp)
+apply(perm_simp add: eqvts)
+apply(rule case_cong)
+apply(rule find_maps)
+apply(simp)
+apply(perm_simp add: eqvts)
+done
+
+lemma ax_psubst:
+  assumes a: "\<theta>n,\<theta>c<M> = Ax x a"
+  and     b: "a\<sharp>(\<theta>n,\<theta>c)" "x\<sharp>(\<theta>n,\<theta>c)"
+  shows "M = Ax x a"
+using a b
+apply(nominal_induct M avoiding: \<theta>n \<theta>c rule: trm.induct)
+apply(auto)
+apply(drule lookup_unicity)
+apply(simp)+
+apply(case_tac "findc \<theta>c coname")
+apply(simp)
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(simp)
+apply(case_tac "findn \<theta>n name")
+apply(simp)
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(simp)
+apply(case_tac "findc \<theta>c coname3")
+apply(simp)
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(simp)
+apply(case_tac "findn \<theta>n name2")
+apply(simp)
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(simp)
+apply(case_tac "findn \<theta>n name2")
+apply(simp)
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(simp)
+apply(case_tac "findc \<theta>c coname2")
+apply(simp)
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(simp)
+apply(case_tac "findc \<theta>c coname2")
+apply(simp)
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(simp)
+apply(case_tac "findn \<theta>n name3")
+apply(simp)
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(simp)
+apply(case_tac "findc \<theta>c coname2")
+apply(simp)
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(simp)
+apply(case_tac "findn \<theta>n name2")
+apply(simp)
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(simp)
+done
+
+lemma better_Cut_substc1:
+  assumes a: "a\<sharp>(P,b)" "b\<sharp>N" 
+  shows "(Cut <a>.M (x).N){b:=(y).P} = Cut <a>.(M{b:=(y).P}) (x).N"
+using a
+apply -
+apply(generate_fresh "coname")
+apply(generate_fresh "name")
+apply(subgoal_tac "Cut <a>.M (x).N = Cut <c>.([(c,a)]\<bullet>M) (ca).([(ca,x)]\<bullet>N)")
+apply(simp)
+apply(rule trans)
+apply(rule better_Cut_substc)
+apply(simp)
+apply(simp add: abs_fresh)
+apply(auto)[1]
+apply(drule pt_bij1[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm fresh_atm)
+apply(subgoal_tac"b\<sharp>([(ca,x)]\<bullet>N)")
+apply(simp add: forget)
+apply(simp add: trm.inject)
+apply(simp add: alpha eqvts calc_atm fresh_prod fresh_atm subst_fresh)[1]
+apply(perm_simp)
+apply(simp add: fresh_left calc_atm)
+apply(simp add: trm.inject)
+apply(rule conjI)
+apply(rule sym)
+apply(simp add: alpha eqvts calc_atm fresh_prod fresh_atm subst_fresh)[1]
+apply(rule sym)
+apply(simp add: alpha eqvts calc_atm fresh_prod fresh_atm subst_fresh)[1]
+done
+
+lemma better_Cut_substc2:
+  assumes a: "x\<sharp>(y,P)" "b\<sharp>(a,M)" "N\<noteq>Ax x b"
+  shows "(Cut <a>.M (x).N){b:=(y).P} = Cut <a>.M (x).(N{b:=(y).P})"
+using a
+apply -
+apply(generate_fresh "coname")
+apply(generate_fresh "name")
+apply(subgoal_tac "Cut <a>.M (x).N = Cut <c>.([(c,a)]\<bullet>M) (ca).([(ca,x)]\<bullet>N)")
+apply(simp)
+apply(rule trans)
+apply(rule better_Cut_substc)
+apply(simp)
+apply(simp add: abs_fresh)
+apply(auto)[1]
+apply(drule pt_bij1[OF pt_name_inst, OF at_name_inst])
+apply(simp add: calc_atm fresh_atm fresh_prod)
+apply(subgoal_tac"b\<sharp>([(c,a)]\<bullet>M)")
+apply(simp add: forget)
+apply(simp add: trm.inject)
+apply(simp add: alpha eqvts calc_atm fresh_prod fresh_atm subst_fresh)[1]
+apply(perm_simp)
+apply(auto simp add: fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(simp add: trm.inject)
+apply(rule conjI)
+apply(rule sym)
+apply(simp add: alpha eqvts calc_atm fresh_prod fresh_atm subst_fresh)[1]
+apply(rule sym)
+apply(simp add: alpha eqvts calc_atm fresh_prod fresh_atm subst_fresh)[1]
+done
+
+lemma better_Cut_substn1:
+  assumes a: "y\<sharp>(x,N)" "a\<sharp>(b,P)" "M\<noteq>Ax y a"
+  shows "(Cut <a>.M (x).N){y:=<b>.P} = Cut <a>.(M{y:=<b>.P}) (x).N"
+using a
+apply -
+apply(generate_fresh "coname")
+apply(generate_fresh "name")
+apply(subgoal_tac "Cut <a>.M (x).N = Cut <c>.([(c,a)]\<bullet>M) (ca).([(ca,x)]\<bullet>N)")
+apply(simp)
+apply(rule trans)
+apply(rule better_Cut_substn)
+apply(simp add: abs_fresh)
+apply(simp add: abs_fresh)
+apply(auto)[1]
+apply(drule pt_bij1[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm fresh_atm fresh_prod)
+apply(subgoal_tac"y\<sharp>([(ca,x)]\<bullet>N)")
+apply(simp add: forget)
+apply(simp add: trm.inject)
+apply(simp add: alpha eqvts calc_atm fresh_prod fresh_atm subst_fresh)[1]
+apply(perm_simp)
+apply(auto simp add: fresh_left calc_atm fresh_prod fresh_atm)[1]
+apply(simp add: trm.inject)
+apply(rule conjI)
+apply(rule sym)
+apply(simp add: alpha eqvts calc_atm fresh_prod fresh_atm subst_fresh)[1]
+apply(rule sym)
+apply(simp add: alpha eqvts calc_atm fresh_prod fresh_atm subst_fresh)[1]
+done
+
+lemma better_Cut_substn2:
+  assumes a: "x\<sharp>(P,y)" "y\<sharp>M" 
+  shows "(Cut <a>.M (x).N){y:=<b>.P} = Cut <a>.M (x).(N{y:=<b>.P})"
+using a
+apply -
+apply(generate_fresh "coname")
+apply(generate_fresh "name")
+apply(subgoal_tac "Cut <a>.M (x).N = Cut <c>.([(c,a)]\<bullet>M) (ca).([(ca,x)]\<bullet>N)")
+apply(simp)
+apply(rule trans)
+apply(rule better_Cut_substn)
+apply(simp add: abs_fresh)
+apply(simp add: abs_fresh)
+apply(auto)[1]
+apply(drule pt_bij1[OF pt_coname_inst, OF at_coname_inst])
+apply(simp add: calc_atm fresh_atm)
+apply(subgoal_tac"y\<sharp>([(c,a)]\<bullet>M)")
+apply(simp add: forget)
+apply(simp add: trm.inject)
+apply(simp add: alpha eqvts calc_atm fresh_prod fresh_atm subst_fresh)[1]
+apply(perm_simp)
+apply(simp add: fresh_left calc_atm)
+apply(simp add: trm.inject)
+apply(rule conjI)
+apply(rule sym)
+apply(simp add: alpha eqvts calc_atm fresh_prod fresh_atm subst_fresh)[1]
+apply(rule sym)
+apply(simp add: alpha eqvts calc_atm fresh_prod fresh_atm subst_fresh)[1]
+done
+
+lemma psubst_fresh_name:
+  fixes x::"name"
+  assumes a: "x\<sharp>\<theta>n" "x\<sharp>\<theta>c" "x\<sharp>M"
+  shows "x\<sharp>\<theta>n,\<theta>c<M>"
+using a
+apply(nominal_induct M avoiding: x \<theta>n \<theta>c rule: trm.induct)
+apply(simp add: lookup_freshness)
+apply(auto simp add: abs_fresh)[1]
+apply(simp add: lookupc_freshness)
+apply(simp add: lookupc_freshness)
+apply(simp add: lookupc_freshness)
+apply(simp add: lookupd_freshness)
+apply(simp add: lookupd_freshness)
+apply(simp add: lookupc_freshness)
+apply(simp)
+apply(case_tac "findc \<theta>c coname")
+apply(auto simp add: abs_fresh)[1]
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(simp add: abs_fresh fresh_prod fresh_atm cmaps_fresh)
+apply(simp)
+apply(case_tac "findn \<theta>n name")
+apply(auto simp add: abs_fresh)[1]
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(simp add: abs_fresh fresh_prod fresh_atm nmaps_fresh)
+apply(simp)
+apply(case_tac "findc \<theta>c coname3")
+apply(auto simp add: abs_fresh)[1]
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(simp add: abs_fresh fresh_prod fresh_atm cmaps_fresh)
+apply(simp)
+apply(case_tac "findn \<theta>n name2")
+apply(auto simp add: abs_fresh)[1]
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(simp add: abs_fresh fresh_prod fresh_atm nmaps_fresh)
+apply(simp)
+apply(case_tac "findn \<theta>n name2")
+apply(auto simp add: abs_fresh)[1]
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(simp add: abs_fresh fresh_prod fresh_atm nmaps_fresh)
+apply(simp)
+apply(case_tac "findc \<theta>c coname2")
+apply(auto simp add: abs_fresh)[1]
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(simp add: abs_fresh fresh_prod fresh_atm cmaps_fresh)
+apply(simp)
+apply(case_tac "findc \<theta>c coname2")
+apply(auto simp add: abs_fresh)[1]
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(simp add: abs_fresh fresh_prod fresh_atm cmaps_fresh)
+apply(simp)
+apply(case_tac "findn \<theta>n name3")
+apply(auto simp add: abs_fresh)[1]
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(simp add: abs_fresh fresh_prod fresh_atm nmaps_fresh)
+apply(simp)
+apply(case_tac "findc \<theta>c coname2")
+apply(auto simp add: abs_fresh abs_supp fin_supp)[1]
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_prod fresh_atm cmaps_fresh)
+apply(simp)
+apply(case_tac "findn \<theta>n name2")
+apply(auto simp add: abs_fresh)[1]
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(simp add: abs_fresh fresh_prod fresh_atm nmaps_fresh)
+done
+
+lemma psubst_fresh_coname:
+  fixes a::"coname"
+  assumes a: "a\<sharp>\<theta>n" "a\<sharp>\<theta>c" "a\<sharp>M"
+  shows "a\<sharp>\<theta>n,\<theta>c<M>"
+using a
+apply(nominal_induct M avoiding: a \<theta>n \<theta>c rule: trm.induct)
+apply(simp add: lookup_freshness)
+apply(auto simp add: abs_fresh)[1]
+apply(simp add: lookupd_freshness)
+apply(simp add: lookupd_freshness)
+apply(simp add: lookupc_freshness)
+apply(simp add: lookupd_freshness)
+apply(simp add: lookupc_freshness)
+apply(simp add: lookupd_freshness)
+apply(simp)
+apply(case_tac "findc \<theta>c coname")
+apply(auto simp add: abs_fresh)[1]
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(simp add: abs_fresh fresh_prod fresh_atm cmaps_fresh)
+apply(simp)
+apply(case_tac "findn \<theta>n name")
+apply(auto simp add: abs_fresh)[1]
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(simp add: abs_fresh fresh_prod fresh_atm nmaps_fresh)
+apply(simp)
+apply(case_tac "findc \<theta>c coname3")
+apply(auto simp add: abs_fresh)[1]
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(simp add: abs_fresh fresh_prod fresh_atm cmaps_fresh)
+apply(simp)
+apply(case_tac "findn \<theta>n name2")
+apply(auto simp add: abs_fresh)[1]
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(simp add: abs_fresh fresh_prod fresh_atm nmaps_fresh)
+apply(simp)
+apply(case_tac "findn \<theta>n name2")
+apply(auto simp add: abs_fresh)[1]
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(simp add: abs_fresh fresh_prod fresh_atm nmaps_fresh)
+apply(simp)
+apply(case_tac "findc \<theta>c coname2")
+apply(auto simp add: abs_fresh)[1]
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(simp add: abs_fresh fresh_prod fresh_atm cmaps_fresh)
+apply(simp)
+apply(case_tac "findc \<theta>c coname2")
+apply(auto simp add: abs_fresh)[1]
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(simp add: abs_fresh fresh_prod fresh_atm cmaps_fresh)
+apply(simp)
+apply(case_tac "findn \<theta>n name3")
+apply(auto simp add: abs_fresh)[1]
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(simp add: abs_fresh fresh_prod fresh_atm nmaps_fresh)
+apply(simp)
+apply(case_tac "findc \<theta>c coname2")
+apply(auto simp add: abs_fresh abs_supp fin_supp)[1]
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(simp add: abs_fresh abs_supp fin_supp fresh_prod fresh_atm cmaps_fresh)
+apply(simp)
+apply(case_tac "findn \<theta>n name2")
+apply(auto simp add: abs_fresh)[1]
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(simp add: abs_fresh fresh_prod fresh_atm nmaps_fresh)
+done
+
+lemma psubst_csubst:
+  assumes a: "a\<sharp>(\<theta>n,\<theta>c)"
+  shows "\<theta>n,((a,x,P)#\<theta>c)<M> = ((\<theta>n,\<theta>c<M>){a:=(x).P})"
+using a
+apply(nominal_induct M avoiding: a x \<theta>n \<theta>c P rule: trm.induct)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(simp add: lookup_csubst)
+apply(simp add: fresh_list_cons fresh_prod)
+apply(auto)[1]
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substc)
+apply(simp)
+apply(simp add: abs_fresh fresh_atm)
+apply(simp add: lookupd_fresh)
+apply(subgoal_tac "a\<sharp>lookupc xa coname \<theta>n")
+apply(simp add: forget)
+apply(simp add: trm.inject)
+apply(rule sym)
+apply(simp add: alpha nrename_swap fresh_atm)
+apply(rule lookupc_freshness)
+apply(simp add: fresh_atm)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substc)
+apply(simp)
+apply(simp add: abs_fresh fresh_atm)
+apply(simp)
+apply(rule conjI)
+apply(rule impI)
+apply(simp add: lookupd_unicity)
+apply(rule impI)
+apply(subgoal_tac "a\<sharp>lookupc xa coname \<theta>n")
+apply(subgoal_tac "a\<sharp>lookupd name aa \<theta>c")
+apply(simp add: forget)
+apply(rule lookupd_freshness)
+apply(simp add: fresh_atm)
+apply(rule lookupc_freshness)
+apply(simp add: fresh_atm)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substc)
+apply(simp)
+apply(simp add: abs_fresh fresh_atm)
+apply(simp)
+apply(rule conjI)
+apply(rule impI)
+apply(drule ax_psubst)
+apply(simp)
+apply(simp)
+apply(blast)
+apply(rule impI)
+apply(subgoal_tac "a\<sharp>lookupc xa coname \<theta>n")
+apply(simp add: forget)
+apply(rule lookupc_freshness)
+apply(simp add: fresh_atm)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substc)
+apply(simp)
+apply(simp add: abs_fresh fresh_atm)
+apply(simp)
+apply(rule conjI)
+apply(rule impI)
+apply(simp add: trm.inject)
+apply(rule sym)
+apply(simp add: alpha)
+apply(simp add: alpha nrename_swap fresh_atm)
+apply(simp add: lookupd_fresh)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substc)
+apply(simp)
+apply(simp add: abs_fresh fresh_atm)
+apply(simp)
+apply(rule conjI)
+apply(rule impI)
+apply(simp add: lookupd_unicity)
+apply(rule impI)
+apply(subgoal_tac "a\<sharp>lookupd name aa \<theta>c")
+apply(simp add: forget)
+apply(rule lookupd_freshness)
+apply(simp add: fresh_atm)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substc)
+apply(simp)
+apply(simp add: abs_fresh fresh_atm)
+apply(simp)
+apply(rule impI)
+apply(drule ax_psubst)
+apply(simp)
+apply(simp)
+apply(blast)
+(* NotR *)
+apply(simp)
+apply(case_tac "findc \<theta>c coname")
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(drule cmaps_false)
+apply(assumption)
+apply(simp)
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substc1)
+apply(simp)
+apply(simp add: cmaps_fresh)
+apply(auto simp add: fresh_prod fresh_atm)[1]
+(* NotL *)
+apply(simp)
+apply(case_tac "findn \<theta>n name")
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(drule_tac a="a" in nmaps_fresh)
+apply(assumption)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substc2)
+apply(simp)
+apply(simp)
+apply(simp)
+apply(simp)
+(* AndR *)
+apply(simp)
+apply(case_tac "findc \<theta>c coname3")
+apply(simp)
+apply(auto simp add: psubst_fresh_coname fresh_list_cons fresh_prod fresh_atm)[1]
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(drule cmaps_false)
+apply(assumption)
+apply(simp)
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substc1)
+apply(simp)
+apply(simp add: cmaps_fresh)
+apply(auto simp add:  psubst_fresh_coname fresh_prod fresh_atm)[1]
+(* AndL1 *)
+apply(simp)
+apply(case_tac "findn \<theta>n name2")
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(drule_tac a="a" in nmaps_fresh)
+apply(assumption)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substc2)
+apply(simp)
+apply(simp)
+apply(simp)
+apply(auto simp add:  psubst_fresh_coname fresh_prod fresh_atm)[1]
+(* AndL2 *)
+apply(simp)
+apply(case_tac "findn \<theta>n name2")
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(drule_tac a="a" in nmaps_fresh)
+apply(assumption)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substc2)
+apply(simp)
+apply(simp)
+apply(simp)
+apply(auto simp add:  psubst_fresh_coname fresh_prod fresh_atm)[1]
+(* OrR1 *)
+apply(simp)
+apply(case_tac "findc \<theta>c coname2")
+apply(simp)
+apply(auto simp add: psubst_fresh_coname fresh_list_cons fresh_prod fresh_atm)[1]
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(drule cmaps_false)
+apply(assumption)
+apply(simp)
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substc1)
+apply(simp)
+apply(simp add: cmaps_fresh)
+apply(auto simp add:  psubst_fresh_coname fresh_prod fresh_atm)[1]
+(* OrR2 *)
+apply(simp)
+apply(case_tac "findc \<theta>c coname2")
+apply(simp)
+apply(auto simp add: psubst_fresh_coname fresh_list_cons fresh_prod fresh_atm)[1]
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(drule cmaps_false)
+apply(assumption)
+apply(simp)
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substc1)
+apply(simp)
+apply(simp add: cmaps_fresh)
+apply(auto simp add:  psubst_fresh_coname fresh_prod fresh_atm)[1]
+(* OrL *)
+apply(simp)
+apply(case_tac "findn \<theta>n name3")
+apply(simp)
+apply(auto simp add: fresh_list_cons psubst_fresh_name fresh_atm fresh_prod)[1]
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(drule_tac a="a" in nmaps_fresh)
+apply(assumption)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substc2)
+apply(simp)
+apply(simp)
+apply(simp)
+apply(auto simp add:  psubst_fresh_name fresh_prod fresh_atm)[1]
+(* ImpR *)
+apply(simp)
+apply(case_tac "findc \<theta>c coname2")
+apply(simp)
+apply(auto simp add: psubst_fresh_coname fresh_list_cons fresh_prod fresh_atm)[1]
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(drule cmaps_false)
+apply(assumption)
+apply(simp)
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substc1)
+apply(simp)
+apply(simp add: cmaps_fresh)
+apply(auto simp add:  psubst_fresh_coname fresh_prod fresh_atm)[1]
+(* ImpL *)
+apply(simp)
+apply(case_tac "findn \<theta>n name2")
+apply(simp)
+apply(auto simp add: fresh_list_cons psubst_fresh_coname psubst_fresh_name fresh_atm fresh_prod)[1]
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(simp add: abs_fresh subst_fresh)
+apply(drule_tac a="a" in nmaps_fresh)
+apply(assumption)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substc2)
+apply(simp)
+apply(simp)
+apply(simp)
+apply(auto simp add: psubst_fresh_coname psubst_fresh_name fresh_prod fresh_atm)[1]
+done
+
+lemma psubst_nsubst:
+  assumes a: "x\<sharp>(\<theta>n,\<theta>c)"
+  shows "((x,a,P)#\<theta>n),\<theta>c<M> = ((\<theta>n,\<theta>c<M>){x:=<a>.P})"
+using a
+apply(nominal_induct M avoiding: a x \<theta>n \<theta>c P rule: trm.induct)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(simp add: lookup_fresh)
+apply(rule lookupb_lookupa)
+apply(simp)
+apply(rule sym)
+apply(rule forget)
+apply(rule lookup_freshness)
+apply(simp add: fresh_atm)
+apply(auto simp add: lookupc_freshness fresh_list_cons fresh_prod)[1]
+apply(simp add: lookupc_fresh)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substn)
+apply(simp add: abs_fresh)
+apply(simp add: abs_fresh fresh_atm)
+apply(simp add: lookupd_fresh)
+apply(subgoal_tac "x\<sharp>lookupd name aa \<theta>c")
+apply(simp add: forget)
+apply(simp add: trm.inject)
+apply(rule sym)
+apply(simp add: alpha crename_swap fresh_atm)
+apply(rule lookupd_freshness)
+apply(simp add: fresh_atm)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substn)
+apply(simp add: abs_fresh) 
+apply(simp add: abs_fresh fresh_atm)
+apply(simp)
+apply(rule conjI)
+apply(rule impI)
+apply(simp add: lookupc_unicity)
+apply(rule impI)
+apply(subgoal_tac "x\<sharp>lookupc xa coname \<theta>n")
+apply(subgoal_tac "x\<sharp>lookupd name aa \<theta>c")
+apply(simp add: forget)
+apply(rule lookupd_freshness)
+apply(simp add: fresh_atm)
+apply(rule lookupc_freshness)
+apply(simp add: fresh_atm)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substn)
+apply(simp add: abs_fresh)
+apply(simp add: abs_fresh fresh_atm)
+apply(simp)
+apply(rule conjI)
+apply(rule impI)
+apply(simp add: trm.inject)
+apply(rule sym)
+apply(simp add: alpha crename_swap fresh_atm)
+apply(rule impI)
+apply(simp add: lookupc_fresh)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substn)
+apply(simp add: abs_fresh)
+apply(simp add: abs_fresh fresh_atm)
+apply(simp)
+apply(rule conjI)
+apply(rule impI)
+apply(simp add: lookupc_unicity)
+apply(rule impI)
+apply(subgoal_tac "x\<sharp>lookupc xa coname \<theta>n")
+apply(simp add: forget)
+apply(rule lookupc_freshness)
+apply(simp add: fresh_prod fresh_atm)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substn)
+apply(simp add: abs_fresh)
+apply(simp add: abs_fresh fresh_atm)
+apply(simp)
+apply(rule conjI)
+apply(rule impI)
+apply(drule ax_psubst)
+apply(simp)
+apply(simp)
+apply(simp)
+apply(blast)
+apply(rule impI)
+apply(subgoal_tac "x\<sharp>lookupd name aa \<theta>c")
+apply(simp add: forget)
+apply(rule lookupd_freshness)
+apply(simp add: fresh_atm)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substn)
+apply(simp add: abs_fresh)
+apply(simp add: abs_fresh fresh_atm)
+apply(simp)
+apply(rule impI)
+apply(drule ax_psubst)
+apply(simp)
+apply(simp)
+apply(blast)
+(* NotR *)
+apply(simp)
+apply(case_tac "findc \<theta>c coname")
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substn1)
+apply(simp add: cmaps_fresh)
+apply(simp)
+apply(simp)
+apply(simp)
+(* NotL *)
+apply(simp)
+apply(case_tac "findn \<theta>n name")
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(drule nmaps_false)
+apply(simp)
+apply(simp)
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substn2)
+apply(simp)
+apply(simp add: nmaps_fresh)
+apply(simp add: fresh_prod fresh_atm)
+(* AndR *)
+apply(simp)
+apply(case_tac "findc \<theta>c coname3")
+apply(simp)
+apply(auto simp add: psubst_fresh_coname fresh_list_cons fresh_prod fresh_atm)[1]
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substn1)
+apply(simp add: cmaps_fresh)
+apply(simp)
+apply(simp)
+apply(auto simp add:  psubst_fresh_coname fresh_prod fresh_atm)[1]
+(* AndL1 *)
+apply(simp)
+apply(case_tac "findn \<theta>n name2")
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(drule nmaps_false)
+apply(simp)
+apply(simp)
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substn2)
+apply(simp)
+apply(simp add: nmaps_fresh)
+apply(auto simp add:  psubst_fresh_coname fresh_prod fresh_atm)[1]
+(* AndL2 *)
+apply(simp)
+apply(case_tac "findn \<theta>n name2")
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(drule nmaps_false)
+apply(simp)
+apply(simp)
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substn2)
+apply(simp)
+apply(simp add: nmaps_fresh)
+apply(auto simp add:  psubst_fresh_coname fresh_prod fresh_atm)[1]
+(* OrR1 *)
+apply(simp)
+apply(case_tac "findc \<theta>c coname2")
+apply(simp)
+apply(auto simp add: psubst_fresh_coname fresh_list_cons fresh_prod fresh_atm)[1]
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substn1)
+apply(simp add: cmaps_fresh)
+apply(simp)
+apply(simp)
+apply(auto simp add:  psubst_fresh_coname fresh_prod fresh_atm)[1]
+(* OrR2 *)
+apply(simp)
+apply(case_tac "findc \<theta>c coname2")
+apply(simp)
+apply(auto simp add: psubst_fresh_coname fresh_list_cons fresh_prod fresh_atm)[1]
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substn1)
+apply(simp add: cmaps_fresh)
+apply(simp)
+apply(simp)
+apply(auto simp add:  psubst_fresh_coname fresh_prod fresh_atm)[1]
+(* OrL *)
+apply(simp)
+apply(case_tac "findn \<theta>n name3")
+apply(simp)
+apply(auto simp add: fresh_list_cons psubst_fresh_name fresh_atm fresh_prod)[1]
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(drule nmaps_false)
+apply(simp)
+apply(simp)
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substn2)
+apply(simp)
+apply(simp add: nmaps_fresh)
+apply(auto simp add:  psubst_fresh_name fresh_prod fresh_atm)[1]
+(* ImpR *)
+apply(simp)
+apply(case_tac "findc \<theta>c coname2")
+apply(simp)
+apply(auto simp add: psubst_fresh_coname fresh_list_cons fresh_prod fresh_atm)[1]
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substn1)
+apply(simp add: cmaps_fresh)
+apply(simp)
+apply(simp)
+apply(auto simp add:  psubst_fresh_coname fresh_prod fresh_atm)[1]
+(* ImpL *)
+apply(simp)
+apply(case_tac "findn \<theta>n name2")
+apply(simp)
+apply(auto simp add: fresh_list_cons psubst_fresh_coname psubst_fresh_name fresh_atm fresh_prod)[1]
+apply(simp)
+apply(auto simp add: fresh_list_cons fresh_prod)[1]
+apply(drule nmaps_false)
+apply(simp)
+apply(simp)
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(fresh_fun_simp)
+apply(rule sym)
+apply(rule trans)
+apply(rule better_Cut_substn2)
+apply(simp)
+apply(simp add: nmaps_fresh)
+apply(auto simp add: psubst_fresh_coname psubst_fresh_name fresh_prod fresh_atm)[1]
+done
+
+definition 
+  ncloses :: "(name\<times>coname\<times>trm) list\<Rightarrow>(name\<times>ty) list \<Rightarrow> bool" ("_ ncloses _" [55,55] 55) 
+where
+  "\<theta>n ncloses \<Gamma> \<equiv> \<forall>x B. ((x,B) \<in> set \<Gamma> \<longrightarrow> (\<exists>c P. \<theta>n nmaps x to Some (c,P) \<and> <c>:P \<in> (\<parallel><B>\<parallel>)))"
+  
+definition 
+  ccloses :: "(coname\<times>name\<times>trm) list\<Rightarrow>(coname\<times>ty) list \<Rightarrow> bool" ("_ ccloses _" [55,55] 55) 
+where
+  "\<theta>c ccloses \<Delta> \<equiv> \<forall>a B. ((a,B) \<in> set \<Delta> \<longrightarrow> (\<exists>x P. \<theta>c cmaps a to Some (x,P) \<and> (x):P \<in> (\<parallel>(B)\<parallel>)))"
+
+lemma ncloses_elim:
+  assumes a: "(x,B) \<in> set \<Gamma>"
+  and     b: "\<theta>n ncloses \<Gamma>"
+  shows "\<exists>c P. \<theta>n nmaps x to Some (c,P) \<and> <c>:P \<in> (\<parallel><B>\<parallel>)"
+using a b by (auto simp add: ncloses_def)
+
+lemma ccloses_elim:
+  assumes a: "(a,B) \<in> set \<Delta>"
+  and     b: "\<theta>c ccloses \<Delta>"
+  shows "\<exists>x P. \<theta>c cmaps a to Some (x,P) \<and> (x):P \<in> (\<parallel>(B)\<parallel>)"
+using a b by (auto simp add: ccloses_def)
+
+lemma ncloses_subset:
+  assumes a: "\<theta>n ncloses \<Gamma>"
+  and     b: "set \<Gamma>' \<subseteq> set \<Gamma>"
+  shows "\<theta>n ncloses \<Gamma>'"
+using a b by (auto  simp add: ncloses_def)
+
+lemma ccloses_subset:
+  assumes a: "\<theta>c ccloses \<Delta>"
+  and     b: "set \<Delta>' \<subseteq> set \<Delta>"
+  shows "\<theta>c ccloses \<Delta>'"
+using a b by (auto  simp add: ccloses_def)
+
+lemma validc_fresh:
+  fixes a::"coname"
+  and   \<Delta>::"(coname\<times>ty) list"
+  assumes a: "a\<sharp>\<Delta>"
+  shows "\<not>(\<exists>B. (a,B)\<in>set \<Delta>)"
+using a
+apply(induct \<Delta>)
+apply(auto simp add: fresh_list_cons fresh_prod fresh_atm)
+done
+
+lemma validn_fresh:
+  fixes x::"name"
+  and   \<Gamma>::"(name\<times>ty) list"
+  assumes a: "x\<sharp>\<Gamma>"
+  shows "\<not>(\<exists>B. (x,B)\<in>set \<Gamma>)"
+using a
+apply(induct \<Gamma>)
+apply(auto simp add: fresh_list_cons fresh_prod fresh_atm)
+done
+
+lemma ccloses_extend:
+  assumes a: "\<theta>c ccloses \<Delta>" "a\<sharp>\<Delta>" "a\<sharp>\<theta>c" "(x):P\<in>\<parallel>(B)\<parallel>"
+  shows "(a,x,P)#\<theta>c ccloses (a,B)#\<Delta>"
+using a
+apply(simp add: ccloses_def)
+apply(drule validc_fresh)
+apply(auto)
+done
+
+lemma ncloses_extend:
+  assumes a: "\<theta>n ncloses \<Gamma>" "x\<sharp>\<Gamma>" "x\<sharp>\<theta>n" "<a>:P\<in>\<parallel><B>\<parallel>"
+  shows "(x,a,P)#\<theta>n ncloses (x,B)#\<Gamma>"
+using a
+apply(simp add: ncloses_def)
+apply(drule validn_fresh)
+apply(auto)
+done
+
+
 text {* typing relation *}
 
 inductive2
    typing :: "ctxtn \<Rightarrow> trm \<Rightarrow> ctxtc \<Rightarrow> bool" ("_ \<turnstile> _ \<turnstile> _" [100,100,100] 100)
 where
-  "\<lbrakk>validn \<Gamma>;validc \<Delta>; (x,B)\<in>set \<Gamma>; (a,B)\<in>set \<Delta>\<rbrakk> \<Longrightarrow> \<Gamma> \<turnstile> Ax x a \<turnstile> \<Delta>"
-| "\<lbrakk>x\<sharp>\<Gamma>; ((x,B)#\<Gamma>) \<turnstile> M \<turnstile> \<Delta>\<rbrakk> \<Longrightarrow>  \<Gamma> \<turnstile> NotR (x).M a \<turnstile> ((a,NOT B)#\<Delta>)"
-| "\<lbrakk>a\<sharp>\<Delta>; \<Gamma> \<turnstile> M \<turnstile> ((a,B)#\<Delta>)\<rbrakk> \<Longrightarrow>  ((x,NOT B)#\<Gamma>) \<turnstile> NotL <a>.M x \<turnstile> \<Delta>"
-| "\<lbrakk>x\<sharp>\<Gamma>; ((x,B1)#\<Gamma>) \<turnstile> M \<turnstile> \<Delta>\<rbrakk> \<Longrightarrow>  ((y,B1 AND B2)#\<Gamma>) \<turnstile> AndL1 (x).M y \<turnstile> \<Delta>"
-| "\<lbrakk>x\<sharp>\<Gamma>; ((x,B2)#\<Gamma>) \<turnstile> M \<turnstile> \<Delta>\<rbrakk> \<Longrightarrow>  ((y,B1 AND B2)#\<Gamma>) \<turnstile> AndL2 (x).M y \<turnstile> \<Delta>"
-| "\<lbrakk>a\<sharp>\<Delta>;b\<sharp>\<Delta>; \<Gamma> \<turnstile> M \<turnstile> ((a,B)#\<Delta>); \<Gamma> \<turnstile> N \<turnstile> ((b,C)#\<Delta>)\<rbrakk> \<Longrightarrow>  \<Gamma> \<turnstile> AndR <a>.M <b>.N c \<turnstile> ((c,B AND C)#\<Delta>)"
-| "\<lbrakk>x\<sharp>\<Gamma>;y\<sharp>\<Gamma>; ((x,B)#\<Gamma>) \<turnstile> M \<turnstile> \<Delta>; ((y,C)#\<Gamma>) \<turnstile> N \<turnstile> \<Delta>\<rbrakk> \<Longrightarrow>  ((z,B OR C)#\<Gamma>) \<turnstile> OrL (x).M (y).N z \<turnstile> \<Delta>"
-| "\<lbrakk>a\<sharp>\<Delta>; \<Gamma> \<turnstile> M \<turnstile> ((a,B1)#\<Delta>)\<rbrakk> \<Longrightarrow>  \<Gamma> \<turnstile> OrR1 <a>.M b \<turnstile> ((b,B1 OR B2)#\<Delta>)"
-| "\<lbrakk>a\<sharp>\<Delta>; \<Gamma> \<turnstile> M \<turnstile> ((a,B2)#\<Delta>)\<rbrakk> \<Longrightarrow>  \<Gamma> \<turnstile> OrR2 <a>.M b \<turnstile> ((b,B1 OR B2)#\<Delta>)"
-| "\<lbrakk>a\<sharp>\<Delta>;x\<sharp>\<Gamma>; \<Gamma> \<turnstile> M \<turnstile> ((a,B)#\<Delta>); ((x,C)#\<Gamma>) \<turnstile> N \<turnstile> \<Delta>\<rbrakk> \<Longrightarrow>  ((y,B IMPL C)#\<Gamma>) \<turnstile> ImpL <a>.M (x).N y \<turnstile> \<Delta>"
-| "\<lbrakk>a\<sharp>\<Delta>;x\<sharp>\<Gamma>; ((x,B)#\<Gamma>) \<turnstile> M \<turnstile> ((a,C)#\<Delta>)\<rbrakk> \<Longrightarrow>  \<Gamma> \<turnstile> ImpR (x).<a>.M b \<turnstile> ((b,B IMPL C)#\<Delta>)"
-| "\<lbrakk>a\<sharp>\<Delta>1;x\<sharp>\<Gamma>2; validn(\<Gamma>1@\<Gamma>2); validc (\<Delta>1@\<Delta>2); \<Gamma>1 \<turnstile> M \<turnstile> ((a,B)#\<Delta>1); ((x,B)#\<Gamma>2) \<turnstile> N \<turnstile> \<Delta>2\<rbrakk> 
-   \<Longrightarrow>  (\<Gamma>1@\<Gamma>2) \<turnstile> Cut <a>.M (x).N \<turnstile> (\<Delta>1@\<Delta>2)"
-
-text {* relations about freshly introducing a name or coname *} 
-
-inductive2
-  fin :: "trm \<times> name \<Rightarrow> bool"
-where
-  "fin (Ax x a,x)"
-| "x\<sharp>M \<Longrightarrow> fin (NotL <a>.M x,x)"
-| "y\<sharp>[x].M \<Longrightarrow> fin (AndL1 (x).M y,y)"
-| "y\<sharp>[x].M \<Longrightarrow> fin (AndL2 (x).M y,y)"
-| "\<lbrakk>z\<sharp>[x].M;z\<sharp>[y].N\<rbrakk> \<Longrightarrow> fin (OrL (x).M (y).N z,z)"
-| "\<lbrakk>y\<sharp>M;y\<sharp>[x].N\<rbrakk> \<Longrightarrow> fin (ImpL <a>.M (x).N y,y)"
-
-inductive2
-  fic :: "trm \<times> coname \<Rightarrow> bool"
-where
-  "fic (Ax x a,a)"
-| "a\<sharp>M \<Longrightarrow> fic (NotR (x).M a,a)"
-| "\<lbrakk>c\<sharp>[a].M;c\<sharp>[b].N\<rbrakk> \<Longrightarrow> fic (AndR <a>.M <b>.N c,c)"
-| "b\<sharp>[a].M \<Longrightarrow> fic (OrR1 <a>.M b,b)"
-| "b\<sharp>[a].M \<Longrightarrow> fic (OrR2 <a>.M b,b)"
-| "\<lbrakk>b\<sharp>[a].M\<rbrakk> \<Longrightarrow> fic (ImpR (x).<a>.M b,b)"
-
-text {* cut-reductions *}
-
-inductive2
-  red :: "trm \<Rightarrow> trm \<Rightarrow> bool" ("_ \<longrightarrow>\<^isub>c _" [100,100] 100)
-where
-  "fic (M,a) \<Longrightarrow> Cut <a>.M (x).(Ax x b) \<longrightarrow>\<^isub>c M[a\<turnstile>c>b]"
-| "fin (M,x) \<Longrightarrow> Cut <a>.(Ax y a) (x).M \<longrightarrow>\<^isub>c M[x\<turnstile>n>y]"
-| "\<lbrakk>fic (NotR (x).M a,a); fin (NotL <b>.N y,y)\<rbrakk> \<Longrightarrow>
-   Cut <a>.(NotR (x).M a) (y).(NotL <b>.N y) \<longrightarrow>\<^isub>c Cut <b>.N (x).M" 
-| "\<lbrakk>fic (AndR <a1>.M1 <a2>.M2 b,b); fin (AndL1 (x).N y,y)\<rbrakk> \<Longrightarrow>
-   Cut <b>.(AndR <a1>.M1 <a2>.M2 b) (y).(AndL1 (x).N y) \<longrightarrow>\<^isub>c Cut <a1>.M1 (x).N"
-| "\<lbrakk>fic (AndR <a1>.M1 <a2>.M2 b,b); fin (AndL2 (x).N y,y)\<rbrakk> \<Longrightarrow>
-   Cut <b>.(AndR <a1>.M1 <a2>.M2 b) (y).(AndL2 (x).N y) \<longrightarrow>\<^isub>c Cut <a2>.M2 (x).N"
-| "\<lbrakk>fic (AndR <a1>.M1 <a2>.M2 b,b); fin (AndL1 (x).N y,y)\<rbrakk> \<Longrightarrow>
-   Cut <b>.(AndR <a1>.M1 <a2>.M2 b) (y).(AndL1 (x).N y) \<longrightarrow>\<^isub>c Cut <a1>.M1 (x).N"
-| "\<lbrakk>fic (OrR1 <a>.M b,b); fin (OrL (x1).N1 (x2).N2 y,y)\<rbrakk> \<Longrightarrow>
-   Cut <b>.(OrR1 <a>.M b) (y).(OrL (x1).N1 (x2).N2 y) \<longrightarrow>\<^isub>c Cut <a>.M (x1).N1"
-| "\<lbrakk>fic (OrR2 <a>.M b,b); fin (OrL (x1).N1 (x2).N2 y,y)\<rbrakk> \<Longrightarrow>
-   Cut <b>.(OrR2 <a>.M b) (y).(OrL (x1).N1 (x2).N2 y) \<longrightarrow>\<^isub>c Cut <a>.M (x2).N2"
-| "\<lbrakk>fin (ImpL <c>.N (y).P z,z); fic (ImpR (x).<a>.M b,b)\<rbrakk> \<Longrightarrow>
-   Cut <b>.(ImpR (x).<a>.M b) (z).(ImpL <c>.N (y).P z) \<longrightarrow>\<^isub>c Cut <a>.(Cut <c>.N (x).M) (y).P"
-| "\<lbrakk>fin (ImpL <c>.N (y).P z,z); fic (ImpR (x).<a>.M b,b)\<rbrakk> \<Longrightarrow>
-   Cut <b>.(ImpR (x).<a>.M b) (z).(ImpL <c>.N (y).P z) \<longrightarrow>\<^isub>c Cut <a>.N (x).(Cut <a>.M (y).P)"
-| "\<not>fic (M,a) \<Longrightarrow> Cut <a>.M (x).N \<longrightarrow>\<^isub>c M[a:=(x).N]"
-| "\<not>fin (N,x) \<Longrightarrow> Cut <a>.M (x).N \<longrightarrow>\<^isub>c N[x:=<a>.M]"
-
-text {* PROOFS *}
-
-lemma validn_eqvt[eqvt]:
-  fixes   pi1:: "name prm"
-  and     pi2:: "coname prm"
-  assumes a: "validn \<Gamma>"
-  shows   "validn (pi1\<bullet>\<Gamma>)" and "validn (pi2\<bullet>\<Gamma>)"
-using a by (induct) (auto simp add: fresh_bij)
-
-lemma validc_eqvt[eqvt]:
-  fixes   pi1:: "name prm"
-  and     pi2:: "coname prm"
-  assumes a: "validc \<Delta>"
-  shows   "validc (pi1\<bullet>\<Delta>)" and "validc (pi2\<bullet>\<Delta>)"
-using a by (induct) (auto simp add: fresh_bij)
-
-text {* Weakening Lemma *}
-
-abbreviation
-  "subn" :: "ctxtn \<Rightarrow> ctxtn \<Rightarrow> bool" (" _ \<lless>n _ " [80,80] 80) 
-where
-  "\<Gamma>1 \<lless>n \<Gamma>2 \<equiv> \<forall>x B. (x,B)\<in>set \<Gamma>1 \<longrightarrow> (x,B)\<in>set \<Gamma>2"
-
-abbreviation
-  "subc" :: "ctxtc \<Rightarrow> ctxtc \<Rightarrow> bool" (" _ \<lless>c _ " [80,80] 80) 
-where
-  "\<Delta>1 \<lless>c \<Delta>2 \<equiv> \<forall>a B. (a,B)\<in>set \<Delta>1 \<longrightarrow> (a,B)\<in>set \<Delta>2"
-
+  TAx:    "\<lbrakk>validn \<Gamma>;validc \<Delta>; (x,B)\<in>set \<Gamma>; (a,B)\<in>set \<Delta>\<rbrakk> \<Longrightarrow> \<Gamma> \<turnstile> Ax x a \<turnstile> \<Delta>"
+| TNotR:  "\<lbrakk>x\<sharp>\<Gamma>; ((x,B)#\<Gamma>) \<turnstile> M \<turnstile> \<Delta>; set \<Delta>' = {(a,NOT B)}\<union>set \<Delta>; validc \<Delta>'\<rbrakk> 
+           \<Longrightarrow> \<Gamma> \<turnstile> NotR (x).M a \<turnstile> \<Delta>'"
+| TNotL:  "\<lbrakk>a\<sharp>\<Delta>; \<Gamma> \<turnstile> M \<turnstile> ((a,B)#\<Delta>); set \<Gamma>' = {(x,NOT B)} \<union> set \<Gamma>; validn \<Gamma>'\<rbrakk>  
+           \<Longrightarrow> \<Gamma>' \<turnstile> NotL <a>.M x \<turnstile> \<Delta>"
+| TAndL1: "\<lbrakk>x\<sharp>(\<Gamma>,y); ((x,B1)#\<Gamma>) \<turnstile> M \<turnstile> \<Delta>; set \<Gamma>' = {(y,B1 AND B2)} \<union> set \<Gamma>; validn \<Gamma>'\<rbrakk> 
+           \<Longrightarrow> \<Gamma>' \<turnstile> AndL1 (x).M y \<turnstile> \<Delta>"
+| TAndL2: "\<lbrakk>x\<sharp>(\<Gamma>,y); ((x,B2)#\<Gamma>) \<turnstile> M \<turnstile> \<Delta>; set \<Gamma>' = {(y,B1 AND B2)} \<union> set \<Gamma>; validn \<Gamma>'\<rbrakk> 
+           \<Longrightarrow> \<Gamma>' \<turnstile> AndL2 (x).M y \<turnstile> \<Delta>"
+| TAndR:  "\<lbrakk>a\<sharp>(\<Delta>,N,c); b\<sharp>(\<Delta>,M,c); a\<noteq>b; \<Gamma> \<turnstile> M \<turnstile> ((a,B)#\<Delta>); \<Gamma> \<turnstile> N \<turnstile> ((b,C)#\<Delta>); 
+           set \<Delta>' = {(c,B AND C)}\<union>set \<Delta>; validc \<Delta>'\<rbrakk> 
+           \<Longrightarrow> \<Gamma> \<turnstile> AndR <a>.M <b>.N c \<turnstile> \<Delta>'"
+| TOrL:   "\<lbrakk>x\<sharp>(\<Gamma>,N,z); y\<sharp>(\<Gamma>,M,z); x\<noteq>y; ((x,B)#\<Gamma>) \<turnstile> M \<turnstile> \<Delta>; ((y,C)#\<Gamma>) \<turnstile> N \<turnstile> \<Delta>;
+           set \<Gamma>' = {(z,B OR C)} \<union> set \<Gamma>; validn \<Gamma>'\<rbrakk> 
+           \<Longrightarrow> \<Gamma>' \<turnstile> OrL (x).M (y).N z \<turnstile> \<Delta>"
+| TOrR1:  "\<lbrakk>a\<sharp>(\<Delta>,b); \<Gamma> \<turnstile> M \<turnstile> ((a,B1)#\<Delta>); set \<Delta>' = {(b,B1 OR B2)}\<union>set \<Delta>; validc \<Delta>'\<rbrakk> 
+           \<Longrightarrow> \<Gamma> \<turnstile> OrR1 <a>.M b \<turnstile> \<Delta>'"
+| TOrR2:  "\<lbrakk>a\<sharp>(\<Delta>,b); \<Gamma> \<turnstile> M \<turnstile> ((a,B2)#\<Delta>); set \<Delta>' = {(b,B1 OR B2)}\<union>set \<Delta>; validc \<Delta>'\<rbrakk> 
+           \<Longrightarrow> \<Gamma> \<turnstile> OrR2 <a>.M b \<turnstile> \<Delta>'"
+| TImpL:  "\<lbrakk>a\<sharp>(\<Delta>,N); x\<sharp>(\<Gamma>,M,y); \<Gamma> \<turnstile> M \<turnstile> ((a,B)#\<Delta>); ((x,C)#\<Gamma>) \<turnstile> N \<turnstile> \<Delta>;
+           set \<Gamma>' = {(y,B IMP C)} \<union> set \<Gamma>; validn \<Gamma>'\<rbrakk> 
+           \<Longrightarrow> \<Gamma>' \<turnstile> ImpL <a>.M (x).N y \<turnstile> \<Delta>"
+| TImpR:  "\<lbrakk>a\<sharp>(\<Delta>,b); x\<sharp>\<Gamma>; ((x,B)#\<Gamma>) \<turnstile> M \<turnstile> ((a,C)#\<Delta>); set \<Delta>' = {(b,B IMP C)}\<union>set \<Delta>; validc \<Delta>'\<rbrakk> 
+           \<Longrightarrow> \<Gamma> \<turnstile> ImpR (x).<a>.M b \<turnstile> \<Delta>'"
+| TCut:   "\<lbrakk>a\<sharp>(\<Delta>,N); x\<sharp>(\<Gamma>,M); \<Gamma> \<turnstile> M \<turnstile> ((a,B)#\<Delta>); ((x,B)#\<Gamma>) \<turnstile> N \<turnstile> \<Delta>\<rbrakk> 
+           \<Longrightarrow> \<Gamma> \<turnstile> Cut <a>.M (x).N \<turnstile> \<Delta>"
+
+equivariance typing
+
+lemma fresh_set_member:
+  fixes x::"name"
+  and   a::"coname"
+  shows "x\<sharp>L \<Longrightarrow> e\<in>set L \<Longrightarrow> x\<sharp>e"
+  and   "a\<sharp>L \<Longrightarrow> e\<in>set L \<Longrightarrow> a\<sharp>e"   
+by (induct L) (auto simp add: fresh_list_cons) 
+
+lemma fresh_subset:
+  fixes x::"name"
+  and   a::"coname"
+  shows "x\<sharp>L \<Longrightarrow> set L' \<subseteq> set L \<Longrightarrow> x\<sharp>L'"
+  and   "a\<sharp>L \<Longrightarrow> set L' \<subseteq> set L \<Longrightarrow> a\<sharp>L'"   
+apply(induct L' arbitrary: L) 
+apply(auto simp add: fresh_list_cons fresh_list_nil intro: fresh_set_member)
+done
+
+lemma fresh_subset_ext:
+  fixes x::"name"
+  and   a::"coname"
+  shows "x\<sharp>L \<Longrightarrow> x\<sharp>e \<Longrightarrow> set L' \<subseteq> set (e#L) \<Longrightarrow> x\<sharp>L'"
+  and   "a\<sharp>L \<Longrightarrow> a\<sharp>e \<Longrightarrow> set L' \<subseteq> set (e#L) \<Longrightarrow> a\<sharp>L'"   
+apply(induct L' arbitrary: L) 
+apply(auto simp add: fresh_list_cons fresh_list_nil intro: fresh_set_member)
+done
+
+lemma fresh_under_insert:
+  fixes x::"name"
+  and   a::"coname"
+  and   \<Gamma>::"ctxtn"
+  and   \<Delta>::"ctxtc"
+  shows "x\<sharp>\<Gamma> \<Longrightarrow> x\<noteq>y \<Longrightarrow> set \<Gamma>' = insert (y,B) (set \<Gamma>) \<Longrightarrow> x\<sharp>\<Gamma>'"
+  and   "a\<sharp>\<Delta> \<Longrightarrow> a\<noteq>c \<Longrightarrow> set \<Delta>' = insert (c,B) (set \<Delta>) \<Longrightarrow> a\<sharp>\<Delta>'"   
+apply(rule fresh_subset_ext(1))
+apply(auto simp add: fresh_prod fresh_atm fresh_ty)
+apply(rule fresh_subset_ext(2))
+apply(auto simp add: fresh_prod fresh_atm fresh_ty)
+done
+
+nominal_inductive typing
+  apply (simp_all add: abs_fresh fresh_atm fresh_list_cons fresh_prod fresh_ty fresh_ctxt 
+                       fresh_list_append abs_supp fin_supp)
+  apply(auto intro: fresh_under_insert)
+  done
+
+lemma validn_elim:
+  assumes a: "validn ((x,B)#\<Gamma>)"
+  shows "validn \<Gamma> \<and> x\<sharp>\<Gamma>"
+using a
+apply(erule_tac validn.cases)
+apply(auto)
+done
+
+lemma validc_elim:
+  assumes a: "validc ((a,B)#\<Delta>)"
+  shows "validc \<Delta> \<and> a\<sharp>\<Delta>"
+using a
+apply(erule_tac validc.cases)
+apply(auto)
+done
+
+lemma context_fresh:
+  fixes x::"name"
+  and   a::"coname"
+  shows "x\<sharp>\<Gamma> \<Longrightarrow> \<not>(\<exists>B. (x,B)\<in>set \<Gamma>)"
+  and   "a\<sharp>\<Delta> \<Longrightarrow> \<not>(\<exists>B. (a,B)\<in>set \<Delta>)"
+apply -
+apply(induct \<Gamma>)
+apply(auto simp add: fresh_list_cons fresh_prod fresh_atm)
+apply(induct \<Delta>)
+apply(auto simp add: fresh_list_cons fresh_prod fresh_atm)
+done
+
+lemma typing_implies_valid:
+  assumes a: "\<Gamma> \<turnstile> M \<turnstile> \<Delta>"
+  shows "validn \<Gamma> \<and> validc \<Delta>"
+using a
+apply(nominal_induct rule: typing.strong_induct)
+apply(auto dest: validn_elim validc_elim)
+done
+
+lemma ty_perm:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  and   B::"ty"
+  shows "pi1\<bullet>B=B" and "pi2\<bullet>B=B"
+apply(nominal_induct B rule: ty.induct)
+apply(auto simp add: perm_string)
+done
+
+lemma ctxt_perm:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  and   \<Gamma>::"ctxtn"
+  and   \<Delta>::"ctxtc"
+  shows "pi2\<bullet>\<Gamma>=\<Gamma>" and "pi1\<bullet>\<Delta>=\<Delta>"
+apply -
+apply(induct \<Gamma>)
+apply(auto simp add: calc_atm ty_perm)
+apply(induct \<Delta>)
+apply(auto simp add: calc_atm ty_perm)
+done
+
+lemma typing_Ax_elim1: 
+  assumes a: "\<Gamma> \<turnstile> Ax x a \<turnstile> ((a,B)#\<Delta>)"
+  shows "(x,B)\<in>set \<Gamma>"
+using a
+apply(erule_tac typing.cases)
+apply(simp_all add: trm.inject)
+apply(auto)
+apply(auto dest: validc_elim context_fresh)
+done
+
+lemma typing_Ax_elim2: 
+  assumes a: "((x,B)#\<Gamma>) \<turnstile> Ax x a \<turnstile> \<Delta>"
+  shows "(a,B)\<in>set \<Delta>"
+using a
+apply(erule_tac typing.cases)
+apply(simp_all add: trm.inject)
+apply(auto  dest!: validn_elim context_fresh)
+done
+
+lemma psubst_Ax_aux: 
+  assumes a: "\<theta>c cmaps a to Some (y,N)"
+  shows "lookupb x a \<theta>c c P = Cut <c>.P (y).N"
+using a
+apply(induct \<theta>c)
+apply(auto)
+done
+
+lemma psubst_Ax:
+  assumes a: "\<theta>n nmaps x to Some (c,P)"
+  and     b: "\<theta>c cmaps a to Some (y,N)"
+  shows "\<theta>n,\<theta>c<Ax x a> = Cut <c>.P (y).N"
+using a b
+apply(induct \<theta>n)
+apply(auto simp add: psubst_Ax_aux)
+done
+
+lemma psubst_Cut:
+  assumes a: "\<forall>x. M\<noteq>Ax x c"
+  and     b: "\<forall>a. N\<noteq>Ax x a"
+  and     c: "c\<sharp>(\<theta>n,\<theta>c,N)" "x\<sharp>(\<theta>n,\<theta>c,M)"
+  shows "\<theta>n,\<theta>c<Cut <c>.M (x).N> = Cut <c>.(\<theta>n,\<theta>c<M>) (x).(\<theta>n,\<theta>c<N>)"
+using a b c
+apply(simp)
+done
+
+lemma all_CAND: 
+  assumes a: "\<Gamma> \<turnstile> M \<turnstile> \<Delta>"
+  and     b: "\<theta>n ncloses \<Gamma>"
+  and     c: "\<theta>c ccloses \<Delta>"
+  shows "SNa (\<theta>n,\<theta>c<M>)"
+using a b c
+proof(nominal_induct avoiding: \<theta>n \<theta>c rule: typing.strong_induct)
+  case (TAx \<Gamma> \<Delta> x B a \<theta>n \<theta>c)
+  then show ?case
+    apply -
+    apply(drule ncloses_elim)
+    apply(assumption)
+    apply(drule ccloses_elim)
+    apply(assumption)
+    apply(erule exE)+
+    apply(erule conjE)+
+    apply(rule_tac s="Cut <c>.P (xa).Pa" and t="\<theta>n,\<theta>c<Ax x a>" in subst)
+    apply(rule sym)
+    apply(simp only: psubst_Ax)
+    apply(simp add: CUT_SNa)
+    done
+next
+  case (TNotR x \<Gamma> B M \<Delta> \<Delta>' a \<theta>n \<theta>c) 
+  then show ?case 
+    apply(simp)
+    apply(subgoal_tac "(a,NOT B) \<in> set \<Delta>'")
+    apply(drule ccloses_elim)
+    apply(assumption)
+    apply(erule exE)+
+    apply(simp)
+    apply(generate_fresh "coname")
+    apply(fresh_fun_simp)
+    apply(rule_tac B="NOT B" in CUT_SNa)
+    apply(simp)
+    apply(rule disjI2)
+    apply(rule disjI2)
+    apply(rule_tac x="c" in exI)
+    apply(rule_tac x="x" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<M>" in exI)
+    apply(simp)
+    apply(rule conjI)
+    apply(rule fic.intros)
+    apply(rule psubst_fresh_coname)
+    apply(simp)
+    apply(simp)
+    apply(simp)
+    apply(rule BINDING_implies_CAND)
+    apply(unfold BINDINGn_def)
+    apply(simp)
+    apply(rule_tac x="x" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<M>" in exI)
+    apply(simp)
+    apply(rule allI)+
+    apply(rule impI)
+    apply(simp add: psubst_nsubst[symmetric])
+    apply(drule_tac x="(x,aa,Pa)#\<theta>n" in meta_spec)
+    apply(drule_tac x="\<theta>c" in meta_spec)
+    apply(drule meta_mp)
+    apply(rule ncloses_extend)
+    apply(assumption)
+    apply(assumption)
+    apply(assumption)
+    apply(assumption)
+    apply(drule meta_mp)
+    apply(rule ccloses_subset)
+    apply(assumption)
+    apply(blast)
+    apply(assumption)
+    apply(simp)
+    apply(blast)
+    done
+next
+  case (TNotL a \<Delta> \<Gamma> M B \<Gamma>' x \<theta>n \<theta>c)
+  then show ?case
+    apply(simp)
+    apply(subgoal_tac "(x,NOT B) \<in> set \<Gamma>'")
+    apply(drule ncloses_elim)
+    apply(assumption)
+    apply(erule exE)+
+    apply(simp del: NEGc.simps)
+    apply(generate_fresh "name")
+    apply(fresh_fun_simp)
+    apply(rule_tac B="NOT B" in CUT_SNa)
+    apply(simp)
+    apply(rule NEG_intro)
+    apply(simp (no_asm))
+    apply(rule disjI2)
+    apply(rule disjI2)
+    apply(rule_tac x="a" in exI)
+    apply(rule_tac x="ca" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<M>" in exI)
+    apply(simp del: NEGc.simps)
+    apply(rule conjI)
+    apply(rule fin.intros)
+    apply(rule psubst_fresh_name)
+    apply(simp)
+    apply(simp)
+    apply(simp)
+    apply(rule BINDING_implies_CAND)
+    apply(unfold BINDINGc_def)
+    apply(simp (no_asm))
+    apply(rule_tac x="a" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<M>" in exI)
+    apply(simp (no_asm))
+    apply(rule allI)+
+    apply(rule impI)
+    apply(simp del: NEGc.simps add: psubst_csubst[symmetric])
+    apply(drule_tac x="\<theta>n" in meta_spec)
+    apply(drule_tac x="(a,xa,Pa)#\<theta>c" in meta_spec)
+    apply(drule meta_mp)
+    apply(rule ncloses_subset)
+    apply(assumption)
+    apply(blast)
+    apply(drule meta_mp)
+    apply(rule ccloses_extend)
+    apply(assumption)
+    apply(assumption)
+    apply(assumption)
+    apply(assumption)
+    apply(assumption)
+    apply(blast)
+    done
+next
+  case (TAndL1 x \<Gamma> y B1 M \<Delta> \<Gamma>' B2 \<theta>n \<theta>c)
+  then show ?case     
+    apply(simp)
+    apply(subgoal_tac "(y,B1 AND B2) \<in> set \<Gamma>'")
+    apply(drule ncloses_elim)
+    apply(assumption)
+    apply(erule exE)+ 
+    apply(simp del: NEGc.simps)
+    apply(generate_fresh "name")
+    apply(fresh_fun_simp)
+    apply(rule_tac B="B1 AND B2" in CUT_SNa)
+    apply(simp)
+    apply(rule NEG_intro)
+    apply(simp (no_asm))
+    apply(rule disjI2)
+    apply(rule disjI2)
+    apply(rule disjI1)
+    apply(rule_tac x="x" in exI)
+    apply(rule_tac x="ca" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<M>" in exI)
+    apply(simp del: NEGc.simps)
+    apply(rule conjI)
+    apply(rule fin.intros)
+    apply(simp del: NEGc.simps add: abs_fresh fresh_prod fresh_atm)
+    apply(rule psubst_fresh_name)
+    apply(simp)
+    apply(simp)
+    apply(simp)
+    apply(rule BINDING_implies_CAND)
+    apply(unfold BINDINGn_def)
+    apply(simp (no_asm))
+    apply(rule_tac x="x" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<M>" in exI)
+    apply(simp (no_asm))
+    apply(rule allI)+
+    apply(rule impI)
+    apply(simp del: NEGc.simps add: psubst_nsubst[symmetric])
+    apply(drule_tac x="(x,a,Pa)#\<theta>n" in meta_spec)
+    apply(drule_tac x="\<theta>c" in meta_spec)
+    apply(drule meta_mp)
+    apply(rule ncloses_extend)
+    apply(rule ncloses_subset)
+    apply(assumption)
+    apply(blast)
+    apply(simp)
+    apply(simp)
+    apply(simp)
+    apply(drule meta_mp)
+    apply(assumption)
+    apply(assumption)
+    apply(blast)
+    done
+next
+  case (TAndL2 x \<Gamma> y B2 M \<Delta> \<Gamma>' B1 \<theta>n \<theta>c)
+  then show ?case 
+    apply(simp)
+    apply(subgoal_tac "(y,B1 AND B2) \<in> set \<Gamma>'")
+    apply(drule ncloses_elim)
+    apply(assumption)
+    apply(erule exE)+ 
+    apply(simp del: NEGc.simps)
+    apply(generate_fresh "name")
+    apply(fresh_fun_simp)
+    apply(rule_tac B="B1 AND B2" in CUT_SNa)
+    apply(simp)
+    apply(rule NEG_intro)
+    apply(simp (no_asm))
+    apply(rule disjI2)
+    apply(rule disjI2)
+    apply(rule disjI2)
+    apply(rule_tac x="x" in exI)
+    apply(rule_tac x="ca" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<M>" in exI)
+    apply(simp del: NEGc.simps)
+    apply(rule conjI)
+    apply(rule fin.intros)
+    apply(simp del: NEGc.simps add: abs_fresh fresh_prod fresh_atm)
+    apply(rule psubst_fresh_name)
+    apply(simp)
+    apply(simp)
+    apply(simp)
+    apply(rule BINDING_implies_CAND)
+    apply(unfold BINDINGn_def)
+    apply(simp (no_asm))
+    apply(rule_tac x="x" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<M>" in exI)
+    apply(simp (no_asm))
+    apply(rule allI)+
+    apply(rule impI)
+    apply(simp del: NEGc.simps add: psubst_nsubst[symmetric])
+    apply(drule_tac x="(x,a,Pa)#\<theta>n" in meta_spec)
+    apply(drule_tac x="\<theta>c" in meta_spec)
+    apply(drule meta_mp)
+    apply(rule ncloses_extend)
+    apply(rule ncloses_subset)
+    apply(assumption)
+    apply(blast)
+    apply(simp)
+    apply(simp)
+    apply(simp)
+    apply(drule meta_mp)
+    apply(assumption)
+    apply(assumption)
+    apply(blast)
+    done
+next
+  case (TAndR a \<Delta> N c b M \<Gamma> B C \<Delta>' \<theta>n \<theta>c)
+  then show ?case 
+    apply(simp)
+    apply(subgoal_tac "(c,B AND C) \<in> set \<Delta>'")
+    apply(drule ccloses_elim)
+    apply(assumption)
+    apply(erule exE)+
+    apply(simp)
+    apply(generate_fresh "coname")
+    apply(fresh_fun_simp)
+    apply(rule_tac B="B AND C" in CUT_SNa)
+    apply(simp)
+    apply(rule disjI2)
+    apply(rule disjI2)
+    apply(rule_tac x="ca" in exI)
+    apply(rule_tac x="a" in exI)
+    apply(rule_tac x="b" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<M>" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<N>" in exI)
+    apply(simp)
+    apply(rule conjI)
+    apply(rule fic.intros)
+    apply(simp add: abs_fresh fresh_prod fresh_atm)
+    apply(rule psubst_fresh_coname)
+    apply(simp)
+    apply(simp)
+    apply(simp)
+    apply(simp add: abs_fresh fresh_prod fresh_atm)
+    apply(rule psubst_fresh_coname)
+    apply(simp)
+    apply(simp)
+    apply(simp)
+    apply(rule conjI)
+    apply(rule BINDING_implies_CAND)
+    apply(unfold BINDINGc_def)
+    apply(simp)
+    apply(rule_tac x="a" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<M>" in exI)
+    apply(simp)
+    apply(rule allI)+
+    apply(rule impI)
+    apply(simp add: psubst_csubst[symmetric])
+    apply(drule_tac x="\<theta>n" in meta_spec)
+    apply(drule_tac x="(a,xa,Pa)#\<theta>c" in meta_spec)
+    apply(drule meta_mp)
+    apply(assumption)
+    apply(drule meta_mp)
+    apply(rule ccloses_extend)
+    apply(rule ccloses_subset)
+    apply(assumption)
+    apply(blast)
+    apply(simp)
+    apply(simp)
+    apply(assumption)
+    apply(assumption)
+    apply(rule BINDING_implies_CAND)
+    apply(unfold BINDINGc_def)
+    apply(simp)
+    apply(rule_tac x="b" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<N>" in exI)
+    apply(simp)
+    apply(rule allI)+
+    apply(rule impI)
+    apply(simp add: psubst_csubst[symmetric])
+    apply(rotate_tac 14)
+    apply(drule_tac x="\<theta>n" in meta_spec)
+    apply(drule_tac x="(b,xa,Pa)#\<theta>c" in meta_spec)
+    apply(drule meta_mp)
+    apply(assumption)
+    apply(drule meta_mp)
+    apply(rule ccloses_extend)
+    apply(rule ccloses_subset)
+    apply(assumption)
+    apply(blast)
+    apply(simp)
+    apply(simp)
+    apply(assumption)
+    apply(assumption)
+    apply(simp)
+    apply(blast)
+    done
+next
+  case (TOrL x \<Gamma> N z y M B \<Delta> C \<Gamma>' \<theta>n \<theta>c)
+  then show ?case 
+    apply(simp)
+    apply(subgoal_tac "(z,B OR C) \<in> set \<Gamma>'")
+    apply(drule ncloses_elim)
+    apply(assumption)
+    apply(erule exE)+
+    apply(simp del: NEGc.simps)
+    apply(generate_fresh "name")
+    apply(fresh_fun_simp)
+    apply(rule_tac B="B OR C" in CUT_SNa)
+    apply(simp)
+    apply(rule NEG_intro)
+    apply(simp (no_asm))
+    apply(rule disjI2)
+    apply(rule disjI2)
+    apply(rule_tac x="x" in exI)
+    apply(rule_tac x="y" in exI)
+    apply(rule_tac x="ca" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<M>" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<N>" in exI)
+    apply(simp del: NEGc.simps)
+    apply(rule conjI)
+    apply(rule fin.intros)
+    apply(simp del: NEGc.simps add: abs_fresh fresh_prod fresh_atm)
+    apply(rule psubst_fresh_name)
+    apply(simp)
+    apply(simp)
+    apply(simp)
+    apply(simp del: NEGc.simps add: abs_fresh fresh_prod fresh_atm)
+    apply(rule psubst_fresh_name)
+    apply(simp)
+    apply(simp)
+    apply(simp)
+    apply(rule conjI)
+    apply(rule BINDING_implies_CAND)
+    apply(unfold BINDINGn_def)
+    apply(simp del: NEGc.simps)
+    apply(rule_tac x="x" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<M>" in exI)
+    apply(simp del: NEGc.simps)
+    apply(rule allI)+
+    apply(rule impI)
+    apply(simp del: NEGc.simps add: psubst_nsubst[symmetric])
+    apply(drule_tac x="(x,a,Pa)#\<theta>n" in meta_spec)
+    apply(drule_tac x="\<theta>c" in meta_spec)
+    apply(drule meta_mp)
+    apply(rule ncloses_extend)
+    apply(rule ncloses_subset)
+    apply(assumption)
+    apply(blast)
+    apply(simp)
+    apply(simp)
+    apply(assumption)
+    apply(drule meta_mp)
+    apply(assumption)
+    apply(assumption)
+    apply(rule BINDING_implies_CAND)
+    apply(unfold BINDINGn_def)
+    apply(simp del: NEGc.simps)
+    apply(rule_tac x="y" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<N>" in exI)
+    apply(simp del: NEGc.simps)
+    apply(rule allI)+
+    apply(rule impI)
+    apply(simp del: NEGc.simps add: psubst_nsubst[symmetric])
+    apply(rotate_tac 14)
+    apply(drule_tac x="(y,a,Pa)#\<theta>n" in meta_spec)
+    apply(drule_tac x="\<theta>c" in meta_spec)
+    apply(drule meta_mp)
+    apply(rule ncloses_extend)
+    apply(rule ncloses_subset)
+    apply(assumption)
+    apply(blast)
+    apply(simp)
+    apply(simp)
+    apply(assumption)
+    apply(drule meta_mp)
+    apply(assumption)
+    apply(assumption)
+    apply(blast)
+    done
+next
+  case (TOrR1 a \<Delta> b \<Gamma> M B1 \<Delta>' B2 \<theta>n \<theta>c)
+  then show ?case
+    apply(simp)
+    apply(subgoal_tac "(b,B1 OR B2) \<in> set \<Delta>'")
+    apply(drule ccloses_elim)
+    apply(assumption)
+    apply(erule exE)+ 
+    apply(simp del: NEGc.simps)
+    apply(generate_fresh "coname")
+    apply(fresh_fun_simp)
+    apply(rule_tac B="B1 OR B2" in CUT_SNa)
+    apply(simp)
+    apply(rule disjI2)
+    apply(rule disjI2)
+    apply(rule disjI1)
+    apply(rule_tac x="a" in exI)
+    apply(rule_tac x="c" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<M>" in exI)
+    apply(simp)
+    apply(rule conjI)
+    apply(rule fic.intros)
+    apply(simp del: NEGc.simps add: abs_fresh fresh_prod fresh_atm)
+    apply(rule psubst_fresh_coname)
+    apply(simp)
+    apply(simp)
+    apply(simp)
+    apply(rule BINDING_implies_CAND)
+    apply(unfold BINDINGc_def)
+    apply(simp (no_asm))
+    apply(rule_tac x="a" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<M>" in exI)
+    apply(simp (no_asm))
+    apply(rule allI)+
+    apply(rule impI)    
+    apply(simp del: NEGc.simps add: psubst_csubst[symmetric])
+    apply(drule_tac x="\<theta>n" in meta_spec)
+    apply(drule_tac x="(a,xa,Pa)#\<theta>c" in meta_spec)
+    apply(drule meta_mp)
+    apply(assumption)
+    apply(drule meta_mp)
+    apply(rule ccloses_extend)
+    apply(rule ccloses_subset)
+    apply(assumption)
+    apply(blast)
+    apply(simp)
+    apply(simp)
+    apply(simp)
+    apply(assumption)
+    apply(simp)
+    apply(blast)
+    done
+next
+  case (TOrR2 a \<Delta> b \<Gamma> M B2 \<Delta>' B1 \<theta>n \<theta>c)
+  then show ?case 
+    apply(simp)
+    apply(subgoal_tac "(b,B1 OR B2) \<in> set \<Delta>'")
+    apply(drule ccloses_elim)
+    apply(assumption)
+    apply(erule exE)+ 
+    apply(simp del: NEGc.simps)
+    apply(generate_fresh "coname")
+    apply(fresh_fun_simp)
+    apply(rule_tac B="B1 OR B2" in CUT_SNa)
+    apply(simp)
+    apply(rule disjI2)
+    apply(rule disjI2)
+    apply(rule disjI2)
+    apply(rule_tac x="a" in exI)
+    apply(rule_tac x="c" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<M>" in exI)
+    apply(simp)
+    apply(rule conjI)
+    apply(rule fic.intros)
+    apply(simp del: NEGc.simps add: abs_fresh fresh_prod fresh_atm)
+    apply(rule psubst_fresh_coname)
+    apply(simp)
+    apply(simp)
+    apply(simp)
+    apply(rule BINDING_implies_CAND)
+    apply(unfold BINDINGc_def)
+    apply(simp (no_asm))
+    apply(rule_tac x="a" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<M>" in exI)
+    apply(simp (no_asm))
+    apply(rule allI)+
+    apply(rule impI)    
+    apply(simp del: NEGc.simps add: psubst_csubst[symmetric])
+    apply(drule_tac x="\<theta>n" in meta_spec)
+    apply(drule_tac x="(a,xa,Pa)#\<theta>c" in meta_spec)
+    apply(drule meta_mp)
+    apply(assumption)
+    apply(drule meta_mp)
+    apply(rule ccloses_extend)
+    apply(rule ccloses_subset)
+    apply(assumption)
+    apply(blast)
+    apply(simp)
+    apply(simp)
+    apply(simp)
+    apply(assumption)
+    apply(simp)
+    apply(blast)
+    done
+next
+  case (TImpL a \<Delta> N x \<Gamma> M y B C \<Gamma>' \<theta>n \<theta>c)
+  then show ?case
+    apply(simp)
+    apply(subgoal_tac "(y,B IMP C) \<in> set \<Gamma>'")
+    apply(drule ncloses_elim)
+    apply(assumption)
+    apply(erule exE)+
+    apply(simp del: NEGc.simps)
+    apply(generate_fresh "name")
+    apply(fresh_fun_simp)
+    apply(rule_tac B="B IMP C" in CUT_SNa)
+    apply(simp)
+    apply(rule NEG_intro)
+    apply(simp (no_asm))
+    apply(rule disjI2)
+    apply(rule disjI2)
+    apply(rule_tac x="x" in exI)
+    apply(rule_tac x="a" in exI)
+    apply(rule_tac x="ca" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<M>" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<N>" in exI)
+    apply(simp del: NEGc.simps)
+    apply(rule conjI)
+    apply(rule fin.intros)
+    apply(rule psubst_fresh_name)
+    apply(simp)
+    apply(simp)
+    apply(simp)
+    apply(simp del: NEGc.simps add: abs_fresh fresh_prod fresh_atm)
+    apply(rule psubst_fresh_name)
+    apply(simp)
+    apply(simp)
+    apply(simp)
+    apply(rule conjI)
+    apply(rule BINDING_implies_CAND)
+    apply(unfold BINDINGc_def)
+    apply(simp del: NEGc.simps)
+    apply(rule_tac x="a" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<M>" in exI)
+    apply(simp del: NEGc.simps)
+    apply(rule allI)+
+    apply(rule impI)
+    apply(simp del: NEGc.simps add: psubst_csubst[symmetric])
+    apply(drule_tac x="\<theta>n" in meta_spec)
+    apply(drule_tac x="(a,xa,Pa)#\<theta>c" in meta_spec)
+    apply(drule meta_mp)
+    apply(rule ncloses_subset)
+    apply(assumption)
+    apply(blast)
+    apply(drule meta_mp)
+    apply(rule ccloses_extend)
+    apply(assumption)
+    apply(simp)
+    apply(simp)
+    apply(assumption)
+    apply(assumption)
+    apply(rule BINDING_implies_CAND)
+    apply(unfold BINDINGn_def)
+    apply(simp del: NEGc.simps)
+    apply(rule_tac x="x" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<N>" in exI)
+    apply(simp del: NEGc.simps)
+    apply(rule allI)+
+    apply(rule impI)
+    apply(simp del: NEGc.simps add: psubst_nsubst[symmetric])
+    apply(rotate_tac 12)
+    apply(drule_tac x="(x,aa,Pa)#\<theta>n" in meta_spec)
+    apply(drule_tac x="\<theta>c" in meta_spec)
+    apply(drule meta_mp)
+    apply(rule ncloses_extend)
+    apply(rule ncloses_subset)
+    apply(assumption)
+    apply(blast)
+    apply(simp)
+    apply(simp)
+    apply(assumption)
+    apply(drule meta_mp)
+    apply(assumption)
+    apply(assumption)
+    apply(blast)
+    done
+next
+  case (TImpR a \<Delta> b x \<Gamma> B M C \<Delta>' \<theta>n \<theta>c)
+  then show ?case
+    apply(simp)
+    apply(subgoal_tac "(b,B IMP C) \<in> set \<Delta>'")
+    apply(drule ccloses_elim)
+    apply(assumption)
+    apply(erule exE)+
+    apply(simp)
+    apply(generate_fresh "coname")
+    apply(fresh_fun_simp)
+    apply(rule_tac B="B IMP C" in CUT_SNa)
+    apply(simp)
+    apply(rule disjI2)
+    apply(rule disjI2)
+    apply(rule_tac x="x" in exI)
+    apply(rule_tac x="a" in exI)
+    apply(rule_tac x="c" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<M>" in exI)
+    apply(simp)
+    apply(rule conjI)
+    apply(rule fic.intros)
+    apply(simp add: abs_fresh fresh_prod fresh_atm)
+    apply(rule psubst_fresh_coname)
+    apply(simp)
+    apply(simp)
+    apply(simp)
+    apply(rule conjI)
+    apply(rule allI)+
+    apply(rule impI)
+    apply(simp add: psubst_csubst[symmetric])
+    apply(rule BINDING_implies_CAND)
+    apply(unfold BINDINGn_def)
+    apply(simp)
+    apply(rule_tac x="x" in exI)
+    apply(rule_tac x="\<theta>n,((a,z,Pa)#\<theta>c)<M>" in exI)
+    apply(simp)
+    apply(rule allI)+
+    apply(rule impI)
+    apply(rule_tac t="\<theta>n,((a,z,Pa)#\<theta>c)<M>{x:=<aa>.Pb}" and 
+                   s="((x,aa,Pb)#\<theta>n),((a,z,Pa)#\<theta>c)<M>" in subst)
+    apply(rule psubst_nsubst)
+    apply(simp add: fresh_prod fresh_atm fresh_list_cons)
+    apply(drule_tac x="(x,aa,Pb)#\<theta>n" in meta_spec)
+    apply(drule_tac x="(a,z,Pa)#\<theta>c" in meta_spec)
+    apply(drule meta_mp)
+    apply(rule ncloses_extend)
+    apply(assumption)
+    apply(simp)
+    apply(simp)
+    apply(simp)
+    apply(drule meta_mp)
+    apply(rule ccloses_extend)
+    apply(rule ccloses_subset)
+    apply(assumption)
+    apply(blast)
+    apply(auto intro: fresh_subset simp del: NEGc.simps)[1]
+    apply(simp)
+    apply(simp)
+    apply(assumption)
+    apply(rule allI)+
+    apply(rule impI)
+    apply(simp add: psubst_nsubst[symmetric])
+    apply(rule BINDING_implies_CAND)
+    apply(unfold BINDINGc_def)
+    apply(simp)
+    apply(rule_tac x="a" in exI)
+    apply(rule_tac x="((x,ca,Q)#\<theta>n),\<theta>c<M>" in exI)
+    apply(simp)
+    apply(rule allI)+
+    apply(rule impI)
+    apply(rule_tac t="((x,ca,Q)#\<theta>n),\<theta>c<M>{a:=(xaa).Pa}" and 
+                   s="((x,ca,Q)#\<theta>n),((a,xaa,Pa)#\<theta>c)<M>" in subst)
+    apply(rule psubst_csubst)
+    apply(simp add: fresh_prod fresh_atm fresh_list_cons)
+    apply(drule_tac x="(x,ca,Q)#\<theta>n" in meta_spec)
+    apply(drule_tac x="(a,xaa,Pa)#\<theta>c" in meta_spec)
+    apply(drule meta_mp)
+    apply(rule ncloses_extend)
+    apply(assumption)
+    apply(simp)
+    apply(simp)
+    apply(simp)
+    apply(drule meta_mp)
+    apply(rule ccloses_extend)
+    apply(rule ccloses_subset)
+    apply(assumption)
+    apply(blast)
+    apply(auto intro: fresh_subset simp del: NEGc.simps)[1]
+    apply(simp)
+    apply(simp)
+    apply(assumption)
+    apply(simp)
+    apply(blast)
+    done
+next
+  case (TCut a \<Delta> N x \<Gamma> M B \<theta>n \<theta>c)
+  then show ?case 
+    apply -
+    apply(case_tac "\<forall>y. M\<noteq>Ax y a")
+    apply(case_tac "\<forall>c. N\<noteq>Ax x c")
+    apply(simp)
+    apply(rule_tac B="B" in CUT_SNa)
+    apply(rule BINDING_implies_CAND)
+    apply(unfold BINDINGc_def)
+    apply(simp)
+    apply(rule_tac x="a" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<M>" in exI)
+    apply(simp)
+    apply(rule allI)
+    apply(rule allI)
+    apply(rule impI)
+    apply(simp add: psubst_csubst[symmetric]) (*?*)
+    apply(drule_tac x="\<theta>n" in meta_spec)
+    apply(drule_tac x="(a,xa,P)#\<theta>c" in meta_spec)
+    apply(drule meta_mp)
+    apply(assumption)
+    apply(drule meta_mp)
+    apply(rule ccloses_extend) 
+    apply(assumption)
+    apply(assumption)
+    apply(assumption)
+    apply(assumption)
+    apply(assumption)
+    apply(rule BINDING_implies_CAND)
+    apply(unfold BINDINGn_def)
+    apply(simp)
+    apply(rule_tac x="x" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<N>" in exI)
+    apply(simp)
+    apply(rule allI)
+    apply(rule allI)
+    apply(rule impI)
+    apply(simp add: psubst_nsubst[symmetric]) (*?*)
+    apply(rotate_tac 11)
+    apply(drule_tac x="(x,aa,P)#\<theta>n" in meta_spec)
+    apply(drule_tac x="\<theta>c" in meta_spec)
+    apply(drule meta_mp)
+    apply(rule ncloses_extend)
+    apply(assumption)
+    apply(assumption)
+    apply(assumption)
+    apply(assumption)
+    apply(drule_tac meta_mp)
+    apply(assumption)
+    apply(assumption)
+    (* cases at least one axiom *)
+    apply(simp (no_asm_use))
+    apply(erule exE)
+    apply(simp del: psubst.simps)
+    apply(drule typing_Ax_elim2)
+    apply(auto simp add: trm.inject)[1]
+    apply(rule_tac B="B" in CUT_SNa)
+    (* left term *)
+    apply(rule BINDING_implies_CAND)
+    apply(unfold BINDINGc_def)
+    apply(simp)
+    apply(rule_tac x="a" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<M>" in exI)
+    apply(simp)
+    apply(rule allI)+
+    apply(rule impI)
+    apply(drule_tac x="\<theta>n" in meta_spec)
+    apply(drule_tac x="(a,xa,P)#\<theta>c" in meta_spec)
+    apply(drule meta_mp)
+    apply(assumption)
+    apply(drule meta_mp)
+    apply(rule ccloses_extend) 
+    apply(assumption)
+    apply(assumption)
+    apply(assumption)
+    apply(assumption)
+    apply(simp add: psubst_csubst[symmetric]) (*?*)
+    (* right term -axiom *)
+    apply(drule ccloses_elim)
+    apply(assumption)
+    apply(erule exE)+
+    apply(erule conjE)
+    apply(frule_tac y="x" in lookupd_cmaps)
+    apply(drule cmaps_fresh)
+    apply(assumption)
+    apply(simp)
+    apply(subgoal_tac "(x):P[xa\<turnstile>n>x] = (xa):P")
+    apply(simp)
+    apply(simp add: ntrm.inject)
+    apply(simp add: alpha fresh_prod fresh_atm)
+    apply(rule sym)
+    apply(rule nrename_swap)
+    apply(simp)
+    (* M is axiom *)
+    apply(simp)
+    apply(auto)[1]
+    (* both are axioms *)
+    apply(rule_tac B="B" in CUT_SNa)
+    apply(drule typing_Ax_elim1)
+    apply(drule ncloses_elim)
+    apply(assumption)
+    apply(erule exE)+
+    apply(erule conjE)
+    apply(frule_tac a="a" in lookupc_nmaps)
+    apply(drule_tac a="a" in nmaps_fresh)
+    apply(assumption)
+    apply(simp)
+    apply(subgoal_tac "<a>:P[c\<turnstile>c>a] = <c>:P")
+    apply(simp)
+    apply(simp add: ctrm.inject)
+    apply(simp add: alpha fresh_prod fresh_atm)
+    apply(rule sym)
+    apply(rule crename_swap)
+    apply(simp)
+    apply(drule typing_Ax_elim2)
+    apply(drule ccloses_elim)
+    apply(assumption)
+    apply(erule exE)+
+    apply(erule conjE)
+    apply(frule_tac y="x" in lookupd_cmaps)
+    apply(drule cmaps_fresh)
+    apply(assumption)
+    apply(simp)
+    apply(subgoal_tac "(x):P[xa\<turnstile>n>x] = (xa):P")
+    apply(simp)
+    apply(simp add: ntrm.inject)
+    apply(simp add: alpha fresh_prod fresh_atm)
+    apply(rule sym)
+    apply(rule nrename_swap)
+    apply(simp)
+    (* N is not axioms *)
+    apply(rule_tac B="B" in CUT_SNa)
+    (* left term *)
+    apply(drule typing_Ax_elim1)
+    apply(drule ncloses_elim)
+    apply(assumption)
+    apply(erule exE)+
+    apply(erule conjE)
+    apply(frule_tac a="a" in lookupc_nmaps)
+    apply(drule_tac a="a" in nmaps_fresh)
+    apply(assumption)
+    apply(simp)
+    apply(subgoal_tac "<a>:P[c\<turnstile>c>a] = <c>:P")
+    apply(simp)
+    apply(simp add: ctrm.inject)
+    apply(simp add: alpha fresh_prod fresh_atm)
+    apply(rule sym)
+    apply(rule crename_swap)
+    apply(simp)
+    apply(rule BINDING_implies_CAND)
+    apply(unfold BINDINGn_def)
+    apply(simp)
+    apply(rule_tac x="x" in exI)
+    apply(rule_tac x="\<theta>n,\<theta>c<N>" in exI)
+    apply(simp)
+    apply(rule allI)
+    apply(rule allI)
+    apply(rule impI)
+    apply(simp add: psubst_nsubst[symmetric]) (*?*)
+    apply(rotate_tac 10)
+    apply(drule_tac x="(x,aa,P)#\<theta>n" in meta_spec)
+    apply(drule_tac x="\<theta>c" in meta_spec)
+    apply(drule meta_mp)
+    apply(rule ncloses_extend)
+    apply(assumption)
+    apply(assumption)
+    apply(assumption)
+    apply(assumption)
+    apply(drule_tac meta_mp)
+    apply(assumption)
+    apply(assumption)
+    done
+qed
+
+consts
+  "idn" :: "(name\<times>ty) list\<Rightarrow>coname\<Rightarrow>(name\<times>coname\<times>trm) list"
+primrec
+  "idn [] a   = []"
+  "idn (p#\<Gamma>) a = ((fst p),a,Ax (fst p) a)#(idn \<Gamma> a)"
+
+consts
+  "idc" :: "(coname\<times>ty) list\<Rightarrow>name\<Rightarrow>(coname\<times>name\<times>trm) list"
+primrec
+  "idc [] x    = []"
+  "idc (p#\<Delta>) x = ((fst p),x,Ax x (fst p))#(idc \<Delta> x)"
+
+lemma idn_eqvt[eqvt]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "(pi1\<bullet>(idn \<Gamma> a)) = idn (pi1\<bullet>\<Gamma>) (pi1\<bullet>a)"
+  and   "(pi2\<bullet>(idn \<Gamma> a)) = idn (pi2\<bullet>\<Gamma>) (pi2\<bullet>a)"
+apply(induct \<Gamma>)
+apply(auto)
+done
+
+lemma idc_eqvt[eqvt]:
+  fixes pi1::"name prm"
+  and   pi2::"coname prm"
+  shows "(pi1\<bullet>(idc \<Delta> x)) = idc (pi1\<bullet>\<Delta>) (pi1\<bullet>x)"
+  and   "(pi2\<bullet>(idc \<Delta> x)) = idc (pi2\<bullet>\<Delta>) (pi2\<bullet>x)"
+apply(induct \<Delta>)
+apply(auto)
+done
+
+lemma ccloses_id:
+  shows "(idc \<Delta> x) ccloses \<Delta>"
+apply(induct \<Delta>)
+apply(auto simp add: ccloses_def)
+apply(rule Ax_in_CANDs)
+apply(rule Ax_in_CANDs)
+done
+
+lemma ncloses_id:
+  shows "(idn \<Gamma> a) ncloses \<Gamma>"
+apply(induct \<Gamma>)
+apply(auto simp add: ncloses_def)
+apply(rule Ax_in_CANDs)
+apply(rule Ax_in_CANDs)
+done
+
+lemma fresh_idn:
+  fixes x::"name"
+  and   a::"coname"
+  shows "x\<sharp>\<Gamma> \<Longrightarrow> x\<sharp>idn \<Gamma> a"
+  and   "a\<sharp>(\<Gamma>,b) \<Longrightarrow> a\<sharp>idn \<Gamma> b"
+apply(induct \<Gamma>)
+apply(auto simp add: fresh_list_cons fresh_list_nil fresh_atm fresh_prod)
+done
+
+lemma fresh_idc:
+  fixes x::"name"
+  and   a::"coname"
+  shows "x\<sharp>(\<Delta>,y) \<Longrightarrow> x\<sharp>idc \<Delta> y"
+  and   "a\<sharp>\<Delta>  \<Longrightarrow> a\<sharp>idc \<Delta> y"
+apply(induct \<Delta>)
+apply(auto simp add: fresh_list_cons fresh_list_nil fresh_atm fresh_prod)
+done
+
+lemma idc_cmaps:
+  assumes a: "idc \<Delta> y cmaps b to Some (x,M)"
+  shows "M=Ax x b"
+using a
+apply(induct \<Delta>)
+apply(auto)
+apply(case_tac "b=a")
+apply(auto)
+done
+
+lemma idn_nmaps:
+  assumes a: "idn \<Gamma> a nmaps x to Some (b,M)"
+  shows "M=Ax x b"
+using a
+apply(induct \<Gamma>)
+apply(auto)
+apply(case_tac "aa=x")
+apply(auto)
+done
+
+lemma lookup1:
+  assumes a: "x\<sharp>(idn \<Gamma> b)"
+  shows "lookup x a (idn \<Gamma> b) \<theta>c = lookupa x a \<theta>c"
+using a
+apply(induct \<Gamma>)
+apply(auto simp add: fresh_list_cons fresh_prod fresh_atm)
+done
+
+lemma lookup2:
+  assumes a: "\<not>(x\<sharp>(idn \<Gamma> b))"
+  shows "lookup x a (idn \<Gamma> b) \<theta>c = lookupb x a \<theta>c b (Ax x b)"
+using a
+apply(induct \<Gamma>)
+apply(auto simp add: fresh_list_cons fresh_prod fresh_atm fresh_list_nil)
+done
+
+lemma lookup3:
+  assumes a: "a\<sharp>(idc \<Delta> y)"
+  shows "lookupa x a (idc \<Delta> y) = Ax x a"
+using a
+apply(induct \<Delta>)
+apply(auto simp add: fresh_list_cons fresh_prod fresh_atm)
+done
+
+lemma lookup4:
+  assumes a: "\<not>(a\<sharp>(idc \<Delta> y))"
+  shows "lookupa x a (idc \<Delta> y) = Cut <a>.(Ax x a) (y).Ax y a"
+using a
+apply(induct \<Delta>)
+apply(auto simp add: fresh_list_cons fresh_prod fresh_atm fresh_list_nil)
+done
+
+lemma lookup5:
+  assumes a: "a\<sharp>(idc \<Delta> y)"
+  shows "lookupb x a (idc \<Delta> y) c P = Cut <c>.P (x).Ax x a"
+using a
+apply(induct \<Delta>)
+apply(auto simp add: fresh_list_cons fresh_prod fresh_atm fresh_list_nil)
+done
+
+lemma lookup6:
+  assumes a: "\<not>(a\<sharp>(idc \<Delta> y))"
+  shows "lookupb x a (idc \<Delta> y) c P = Cut <c>.P (y).Ax y a"
+using a
+apply(induct \<Delta>)
+apply(auto simp add: fresh_list_cons fresh_prod fresh_atm fresh_list_nil)
+done
+
+lemma lookup7:
+  shows "lookupc x a (idn \<Gamma> b) = Ax x a"
+apply(induct \<Gamma>)
+apply(auto simp add: fresh_list_cons fresh_prod fresh_atm fresh_list_nil)
+done
+
+lemma lookup8:
+  shows "lookupd x a (idc \<Delta> y) = Ax x a"
+apply(induct \<Delta>)
+apply(auto simp add: fresh_list_cons fresh_prod fresh_atm fresh_list_nil)
+done
+
+lemma id_redu:
+  shows "(idn \<Gamma> x),(idc \<Delta> a)<M> \<longrightarrow>\<^isub>a* M"
+apply(nominal_induct M avoiding: \<Gamma> \<Delta> x a rule: trm.induct)
+apply(auto)
+(* Ax *)
+apply(case_tac "name\<sharp>(idn \<Gamma> x)")
+apply(simp add: lookup1)
+apply(case_tac "coname\<sharp>(idc \<Delta> a)")
+apply(simp add: lookup3)
+apply(simp add: lookup4)
+apply(rule a_star_trans)
+apply(rule a_starI)
+apply(rule al_redu)
+apply(rule better_LAxR_intro)
+apply(rule fic.intros)
+apply(simp)
+apply(simp add: lookup2)
+apply(case_tac "coname\<sharp>(idc \<Delta> a)")
+apply(simp add: lookup5)
+apply(rule a_star_trans)
+apply(rule a_starI)
+apply(rule al_redu)
+apply(rule better_LAxR_intro)
+apply(rule fic.intros)
+apply(simp)
+apply(simp add: lookup6)
+apply(rule a_star_trans)
+apply(rule a_starI)
+apply(rule al_redu)
+apply(rule better_LAxR_intro)
+apply(rule fic.intros)
+apply(simp)
+(* Cut *)
+apply(auto simp add: fresh_idn fresh_idc psubst_fresh_name psubst_fresh_coname fresh_atm fresh_prod )[1]
+apply(simp add: lookup7 lookup8)
+apply(simp add: lookup7 lookup8)
+apply(simp add: a_star_Cut)
+apply(simp add: lookup7 lookup8)
+apply(simp add: a_star_Cut)
+apply(simp add: a_star_Cut)
+(* NotR *)
+apply(simp add: fresh_idn fresh_idc)
+apply(case_tac "findc (idc \<Delta> a) coname")
+apply(simp)
+apply(simp add: a_star_NotR)
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(drule idc_cmaps)
+apply(simp)
+apply(subgoal_tac "c\<sharp>idn \<Gamma> x,idc \<Delta> a<trm>")
+apply(rule a_star_trans)
+apply(rule a_starI)
+apply(rule al_redu)
+apply(rule better_LAxR_intro)
+apply(rule fic.intros)
+apply(assumption)
+apply(simp add: crename_fresh)
+apply(simp add: a_star_NotR)
+apply(rule psubst_fresh_coname)
+apply(rule fresh_idn)
+apply(simp)
+apply(rule fresh_idc)
+apply(simp)
+apply(simp)
+(* NotL *)
+apply(simp add: fresh_idn fresh_idc)
+apply(case_tac "findn (idn \<Gamma> x) name")
+apply(simp)
+apply(simp add: a_star_NotL)
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(drule idn_nmaps)
+apply(simp)
+apply(subgoal_tac "c\<sharp>idn \<Gamma> x,idc \<Delta> a<trm>")
+apply(rule a_star_trans)
+apply(rule a_starI)
+apply(rule al_redu)
+apply(rule better_LAxL_intro)
+apply(rule fin.intros)
+apply(assumption)
+apply(simp add: nrename_fresh)
+apply(simp add: a_star_NotL)
+apply(rule psubst_fresh_name)
+apply(rule fresh_idn)
+apply(simp)
+apply(rule fresh_idc)
+apply(simp)
+apply(simp)
+(* AndR *)
+apply(simp add: fresh_idn fresh_idc)
+apply(case_tac "findc (idc \<Delta> a) coname3")
+apply(simp)
+apply(simp add: a_star_AndR)
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(drule idc_cmaps)
+apply(simp)
+apply(subgoal_tac "c\<sharp>idn \<Gamma> x,idc \<Delta> a<trm1>")
+apply(subgoal_tac "c\<sharp>idn \<Gamma> x,idc \<Delta> a<trm2>")
+apply(rule a_star_trans)
+apply(rule a_starI)
+apply(rule al_redu)
+apply(rule better_LAxR_intro)
+apply(rule fic.intros)
+apply(simp add: abs_fresh)
+apply(simp add: abs_fresh)
+apply(auto simp add: fresh_idn fresh_idc psubst_fresh_name crename_fresh fresh_atm fresh_prod )[1]
+apply(rule aux3)
+apply(rule crename.simps)
+apply(auto simp add: fresh_prod fresh_atm)[1]
+apply(rule psubst_fresh_coname)
+apply(rule fresh_idn)
+apply(simp add: fresh_prod fresh_atm)
+apply(rule fresh_idc)
+apply(simp)
+apply(simp)
+apply(auto simp add: fresh_prod fresh_atm)[1]
+apply(rule psubst_fresh_coname)
+apply(rule fresh_idn)
+apply(simp add: fresh_prod fresh_atm)
+apply(rule fresh_idc)
+apply(simp)
+apply(simp)
+apply(simp)
+apply(simp)
+apply(simp add: crename_fresh)
+apply(simp add: a_star_AndR)
+apply(rule psubst_fresh_coname)
+apply(rule fresh_idn)
+apply(simp)
+apply(rule fresh_idc)
+apply(simp)
+apply(simp)
+apply(rule psubst_fresh_coname)
+apply(rule fresh_idn)
+apply(simp)
+apply(rule fresh_idc)
+apply(simp)
+apply(simp)
+(* AndL1 *)
+apply(simp add: fresh_idn fresh_idc)
+apply(case_tac "findn (idn \<Gamma> x) name2")
+apply(simp)
+apply(simp add: a_star_AndL1)
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(drule idn_nmaps)
+apply(simp)
+apply(subgoal_tac "c\<sharp>idn \<Gamma> x,idc \<Delta> a<trm>")
+apply(rule a_star_trans)
+apply(rule a_starI)
+apply(rule al_redu)
+apply(rule better_LAxL_intro)
+apply(rule fin.intros)
+apply(simp add: abs_fresh)
+apply(rule aux3)
+apply(rule nrename.simps)
+apply(auto simp add: fresh_prod fresh_atm)[1]
+apply(simp)
+apply(simp add: nrename_fresh)
+apply(simp add: a_star_AndL1)
+apply(rule psubst_fresh_name)
+apply(rule fresh_idn)
+apply(simp)
+apply(rule fresh_idc)
+apply(simp)
+apply(simp)
+(* AndL2 *)
+apply(simp add: fresh_idn fresh_idc)
+apply(case_tac "findn (idn \<Gamma> x) name2")
+apply(simp)
+apply(simp add: a_star_AndL2)
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(drule idn_nmaps)
+apply(simp)
+apply(subgoal_tac "c\<sharp>idn \<Gamma> x,idc \<Delta> a<trm>")
+apply(rule a_star_trans)
+apply(rule a_starI)
+apply(rule al_redu)
+apply(rule better_LAxL_intro)
+apply(rule fin.intros)
+apply(simp add: abs_fresh)
+apply(rule aux3)
+apply(rule nrename.simps)
+apply(auto simp add: fresh_prod fresh_atm)[1]
+apply(simp)
+apply(simp add: nrename_fresh)
+apply(simp add: a_star_AndL2)
+apply(rule psubst_fresh_name)
+apply(rule fresh_idn)
+apply(simp)
+apply(rule fresh_idc)
+apply(simp)
+apply(simp)
+(* OrR1 *)
+apply(simp add: fresh_idn fresh_idc)
+apply(case_tac "findc (idc \<Delta> a) coname2")
+apply(simp)
+apply(simp add: a_star_OrR1)
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(drule idc_cmaps)
+apply(simp)
+apply(subgoal_tac "c\<sharp>idn \<Gamma> x,idc \<Delta> a<trm>")
+apply(rule a_star_trans)
+apply(rule a_starI)
+apply(rule al_redu)
+apply(rule better_LAxR_intro)
+apply(rule fic.intros)
+apply(simp add: abs_fresh)
+apply(rule aux3)
+apply(rule crename.simps)
+apply(auto simp add: fresh_prod fresh_atm)[1]
+apply(simp)
+apply(simp add: crename_fresh)
+apply(simp add: a_star_OrR1)
+apply(rule psubst_fresh_coname)
+apply(rule fresh_idn)
+apply(simp)
+apply(rule fresh_idc)
+apply(simp)
+apply(simp)
+(* OrR2 *)
+apply(simp add: fresh_idn fresh_idc)
+apply(case_tac "findc (idc \<Delta> a) coname2")
+apply(simp)
+apply(simp add: a_star_OrR2)
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(drule idc_cmaps)
+apply(simp)
+apply(subgoal_tac "c\<sharp>idn \<Gamma> x,idc \<Delta> a<trm>")
+apply(rule a_star_trans)
+apply(rule a_starI)
+apply(rule al_redu)
+apply(rule better_LAxR_intro)
+apply(rule fic.intros)
+apply(simp add: abs_fresh)
+apply(rule aux3)
+apply(rule crename.simps)
+apply(auto simp add: fresh_prod fresh_atm)[1]
+apply(simp)
+apply(simp add: crename_fresh)
+apply(simp add: a_star_OrR2)
+apply(rule psubst_fresh_coname)
+apply(rule fresh_idn)
+apply(simp)
+apply(rule fresh_idc)
+apply(simp)
+apply(simp)
+(* OrL *)
+apply(simp add: fresh_idn fresh_idc)
+apply(case_tac "findn (idn \<Gamma> x) name3")
+apply(simp)
+apply(simp add: a_star_OrL)
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(drule idn_nmaps)
+apply(simp)
+apply(subgoal_tac "c\<sharp>idn \<Gamma> x,idc \<Delta> a<trm1>")
+apply(subgoal_tac "c\<sharp>idn \<Gamma> x,idc \<Delta> a<trm2>")
+apply(rule a_star_trans)
+apply(rule a_starI)
+apply(rule al_redu)
+apply(rule better_LAxL_intro)
+apply(rule fin.intros)
+apply(simp add: abs_fresh)
+apply(simp add: abs_fresh)
+apply(rule aux3)
+apply(rule nrename.simps)
+apply(auto simp add: fresh_prod fresh_atm)[1]
+apply(rule psubst_fresh_name)
+apply(rule fresh_idn)
+apply(simp)
+apply(rule fresh_idc)
+apply(simp add: fresh_prod fresh_atm)
+apply(simp)
+apply(auto simp add: fresh_prod fresh_atm)[1]
+apply(rule psubst_fresh_name)
+apply(rule fresh_idn)
+apply(simp)
+apply(rule fresh_idc)
+apply(simp add: fresh_prod fresh_atm)
+apply(simp)
+apply(simp)
+apply(simp)
+apply(simp add: nrename_fresh)
+apply(simp add: a_star_OrL)
+apply(rule psubst_fresh_name)
+apply(rule fresh_idn)
+apply(simp)
+apply(rule fresh_idc)
+apply(simp)
+apply(simp)
+apply(rule psubst_fresh_name)
+apply(rule fresh_idn)
+apply(simp)
+apply(rule fresh_idc)
+apply(simp)
+apply(simp)
+(* ImpR *)
+apply(simp add: fresh_idn fresh_idc)
+apply(case_tac "findc (idc \<Delta> a) coname2")
+apply(simp)
+apply(simp add: a_star_ImpR)
+apply(auto)[1]
+apply(generate_fresh "coname")
+apply(fresh_fun_simp)
+apply(drule idc_cmaps)
+apply(simp)
+apply(subgoal_tac "c\<sharp>idn \<Gamma> x,idc \<Delta> a<trm>")
+apply(rule a_star_trans)
+apply(rule a_starI)
+apply(rule al_redu)
+apply(rule better_LAxR_intro)
+apply(rule fic.intros)
+apply(simp add: abs_fresh)
+apply(rule aux3)
+apply(rule crename.simps)
+apply(auto simp add: fresh_prod fresh_atm)[1]
+apply(simp)
+apply(simp add: crename_fresh)
+apply(simp add: a_star_ImpR)
+apply(rule psubst_fresh_coname)
+apply(rule fresh_idn)
+apply(simp)
+apply(rule fresh_idc)
+apply(simp)
+apply(simp)
+(* ImpL *)
+apply(simp add: fresh_idn fresh_idc)
+apply(case_tac "findn (idn \<Gamma> x) name2")
+apply(simp)
+apply(simp add: a_star_ImpL)
+apply(auto)[1]
+apply(generate_fresh "name")
+apply(fresh_fun_simp)
+apply(drule idn_nmaps)
+apply(simp)
+apply(subgoal_tac "c\<sharp>idn \<Gamma> x,idc \<Delta> a<trm1>")
+apply(subgoal_tac "c\<sharp>idn \<Gamma> x,idc \<Delta> a<trm2>")
+apply(rule a_star_trans)
+apply(rule a_starI)
+apply(rule al_redu)
+apply(rule better_LAxL_intro)
+apply(rule fin.intros)
+apply(simp add: abs_fresh)
+apply(simp add: abs_fresh)
+apply(rule aux3)
+apply(rule nrename.simps)
+apply(auto simp add: fresh_prod fresh_atm)[1]
+apply(rule psubst_fresh_coname)
+apply(rule fresh_idn)
+apply(simp add: fresh_atm)
+apply(rule fresh_idc)
+apply(simp add: fresh_prod fresh_atm)
+apply(simp)
+apply(auto simp add: fresh_prod fresh_atm)[1]
+apply(rule psubst_fresh_name)
+apply(rule fresh_idn)
+apply(simp)
+apply(rule fresh_idc)
+apply(simp add: fresh_prod fresh_atm)
+apply(simp)
+apply(simp)
+apply(simp add: nrename_fresh)
+apply(simp add: a_star_ImpL)
+apply(rule psubst_fresh_name)
+apply(rule fresh_idn)
+apply(simp)
+apply(rule fresh_idc)
+apply(simp)
+apply(simp)
+apply(rule psubst_fresh_name)
+apply(rule fresh_idn)
+apply(simp)
+apply(rule fresh_idc)
+apply(simp)
+apply(simp)
+done
+
+theorem ALL_SNa:
+  assumes a: "\<Gamma> \<turnstile> M \<turnstile> \<Delta>"
+  shows "SNa M"
+proof -
+  have "(idc \<Delta> x) ccloses \<Delta>" by (simp add: ccloses_id)
+  moreover
+  have "(idn \<Gamma> a) ncloses \<Gamma>" by (simp add: ncloses_id)
+  ultimately have "SNa ((idn \<Gamma> a),(idc \<Delta> x)<M>)" using a by (simp add: all_CAND)
+  moreover
+  have "((idn \<Gamma> a),(idc \<Delta> x)<M>) \<longrightarrow>\<^isub>a* M" by (simp add: id_redu)
+  ultimately show "SNa M" by (simp add: a_star_preserves_SNa)
+qed
 
 end