--- a/src/HOL/Library/FinFun.thy Wed May 30 08:48:14 2012 +0200
+++ b/src/HOL/Library/FinFun.thy Wed May 30 09:13:39 2012 +0200
@@ -858,7 +858,7 @@
subsection {* Function application *}
-notation finfun_apply ("_\<^sub>f" [1000] 1000)
+notation finfun_apply (infixl "$" 999)
interpretation finfun_apply_aux: finfun_rec_wf_aux "\<lambda>b. b" "\<lambda>a' b c. if (a = a') then b else c"
by(unfold_locales) auto
@@ -875,40 +875,40 @@
from this[of UNIV] show "Finite_Set.fold (\<lambda>a'. If (a = a') b') b UNIV = b'" by simp
qed
-lemma finfun_apply_def: "finfun_apply = (\<lambda>f a. finfun_rec (\<lambda>b. b) (\<lambda>a' b c. if (a = a') then b else c) f)"
+lemma finfun_apply_def: "op $ = (\<lambda>f a. finfun_rec (\<lambda>b. b) (\<lambda>a' b c. if (a = a') then b else c) f)"
proof(rule finfun_rec_unique)
- fix c show "finfun_apply (\<lambda>\<^isup>f c) = (\<lambda>a. c)" by(simp add: finfun_const.rep_eq)
+ fix c show "op $ (\<lambda>\<^isup>f c) = (\<lambda>a. c)" by(simp add: finfun_const.rep_eq)
next
- fix g a b show "finfun_apply g(\<^sup>f a := b) = (\<lambda>c. if c = a then b else finfun_apply g c)"
+ fix g a b show "op $ g(\<^sup>f a := b) = (\<lambda>c. if c = a then b else g $ c)"
by(auto simp add: finfun_update_def fun_upd_finfun Abs_finfun_inverse finfun_apply)
qed auto
-lemma finfun_upd_apply: "f(\<^sup>fa := b)\<^sub>f a' = (if a = a' then b else f\<^sub>f a')"
- and finfun_upd_apply_code [code]: "(finfun_update_code f a b)\<^sub>f a' = (if a = a' then b else f\<^sub>f a')"
+lemma finfun_upd_apply: "f(\<^sup>fa := b) $ a' = (if a = a' then b else f $ a')"
+ and finfun_upd_apply_code [code]: "(finfun_update_code f a b) $ a' = (if a = a' then b else f $ a')"
by(simp_all add: finfun_apply_def)
-lemma finfun_const_apply [simp, code]: "(\<lambda>\<^isup>f b)\<^sub>f a = b"
+lemma finfun_const_apply [simp, code]: "(\<lambda>\<^isup>f b) $ a = b"
by(simp add: finfun_apply_def)
lemma finfun_upd_apply_same [simp]:
- "f(\<^sup>fa := b)\<^sub>f a = b"
+ "f(\<^sup>fa := b) $ a = b"
by(simp add: finfun_upd_apply)
lemma finfun_upd_apply_other [simp]:
- "a \<noteq> a' \<Longrightarrow> f(\<^sup>fa := b)\<^sub>f a' = f\<^sub>f a'"
+ "a \<noteq> a' \<Longrightarrow> f(\<^sup>fa := b) $ a' = f $ a'"
by(simp add: finfun_upd_apply)
-lemma finfun_ext: "(\<And>a. f\<^sub>f a = g\<^sub>f a) \<Longrightarrow> f = g"
+lemma finfun_ext: "(\<And>a. f $ a = g $ a) \<Longrightarrow> f = g"
by(auto simp add: finfun_apply_inject[symmetric] simp del: finfun_apply_inject)
-lemma expand_finfun_eq: "(f = g) = (f\<^sub>f = g\<^sub>f)"
+lemma expand_finfun_eq: "(f = g) = (op $ f = op $ g)"
by(auto intro: finfun_ext)
lemma finfun_const_inject [simp]: "(\<lambda>\<^isup>f b) = (\<lambda>\<^isup>f b') \<equiv> b = b'"
by(simp add: expand_finfun_eq fun_eq_iff)
lemma finfun_const_eq_update:
- "((\<lambda>\<^isup>f b) = f(\<^sup>f a := b')) = (b = b' \<and> (\<forall>a'. a \<noteq> a' \<longrightarrow> f\<^sub>f a' = b))"
+ "((\<lambda>\<^isup>f b) = f(\<^sup>f a := b')) = (b = b' \<and> (\<forall>a'. a \<noteq> a' \<longrightarrow> f $ a' = b))"
by(auto simp add: expand_finfun_eq fun_eq_iff finfun_upd_apply)
subsection {* Function composition *}
@@ -941,8 +941,8 @@
by(simp_all add: finfun_comp_def)
lemma finfun_comp_apply [simp]:
- "(g \<circ>\<^isub>f f)\<^sub>f = g \<circ> f\<^sub>f"
-by(induct f rule: finfun_weak_induct)(auto simp add: finfun_upd_apply intro: ext)
+ "op $ (g \<circ>\<^isub>f f) = g \<circ> op $ f"
+by(induct f rule: finfun_weak_induct)(auto simp add: finfun_upd_apply)
lemma finfun_comp_comp_collapse [simp]: "f \<circ>\<^isub>f g \<circ>\<^isub>f h = (f o g) \<circ>\<^isub>f h"
by(induct h rule: finfun_weak_induct) simp_all
@@ -958,13 +958,13 @@
proof -
have "(\<lambda>f. g \<circ>\<^isub>f f) = (\<lambda>f. Abs_finfun (g \<circ> finfun_apply f))"
proof(rule finfun_rec_unique)
- { fix c show "Abs_finfun (g \<circ> (\<lambda>\<^isup>f c)\<^sub>f) = (\<lambda>\<^isup>f g c)"
+ { fix c show "Abs_finfun (g \<circ> op $ (\<lambda>\<^isup>f c)) = (\<lambda>\<^isup>f g c)"
by(simp add: finfun_comp_def o_def)(simp add: finfun_const_def) }
- { fix g' a b show "Abs_finfun (g \<circ> g'(\<^sup>f a := b)\<^sub>f) = (Abs_finfun (g \<circ> g'\<^sub>f))(\<^sup>f a := g b)"
+ { fix g' a b show "Abs_finfun (g \<circ> op $ g'(\<^sup>f a := b)) = (Abs_finfun (g \<circ> op $ g'))(\<^sup>f a := g b)"
proof -
obtain y where y: "y \<in> finfun" and g': "g' = Abs_finfun y" by(cases g')
- moreover hence "(g \<circ> g'\<^sub>f) \<in> finfun" by(simp add: finfun_left_compose)
- moreover have "g \<circ> y(a := b) = (g \<circ> y)(a := g b)" by(auto intro: ext)
+ moreover hence "(g \<circ> op $ g') \<in> finfun" by(simp add: finfun_left_compose)
+ moreover have "g \<circ> y(a := b) = (g \<circ> y)(a := g b)" by(auto)
ultimately show ?thesis by(simp add: finfun_comp_def finfun_update_def)
qed }
qed auto
@@ -972,7 +972,7 @@
qed
definition finfun_comp2 :: "'b \<Rightarrow>f 'c \<Rightarrow> ('a \<Rightarrow> 'b) \<Rightarrow> 'a \<Rightarrow>f 'c" (infixr "\<^sub>f\<circ>" 55)
-where [code del]: "finfun_comp2 g f = Abs_finfun (finfun_apply g \<circ> f)"
+where [code del]: "finfun_comp2 g f = Abs_finfun (op $ g \<circ> f)"
lemma finfun_comp2_const [code, simp]: "finfun_comp2 (\<lambda>\<^isup>f c) f = (\<lambda>\<^isup>f c)"
including finfun
@@ -984,18 +984,18 @@
shows "finfun_comp2 (g(\<^sup>f b := c)) f = (if b \<in> range f then (finfun_comp2 g f)(\<^sup>f inv f b := c) else finfun_comp2 g f)"
proof(cases "b \<in> range f")
case True
- from inj have "\<And>x. (finfun_apply g)(f x := c) \<circ> f = (finfun_apply g \<circ> f)(x := c)" by(auto intro!: ext dest: injD)
+ from inj have "\<And>x. (op $ g)(f x := c) \<circ> f = (op $ g \<circ> f)(x := c)" by(auto intro!: ext dest: injD)
with inj True show ?thesis by(auto simp add: finfun_comp2_def finfun_update_def finfun_right_compose)
next
case False
- hence "(finfun_apply g)(b := c) \<circ> f = finfun_apply g \<circ> f" by(auto simp add: fun_eq_iff)
+ hence "(op $ g)(b := c) \<circ> f = op $ g \<circ> f" by(auto simp add: fun_eq_iff)
with False show ?thesis by(auto simp add: finfun_comp2_def finfun_update_def)
qed
subsection {* Universal quantification *}
definition finfun_All_except :: "'a list \<Rightarrow> 'a \<Rightarrow>f bool \<Rightarrow> bool"
-where [code del]: "finfun_All_except A P \<equiv> \<forall>a. a \<in> set A \<or> P\<^sub>f a"
+where [code del]: "finfun_All_except A P \<equiv> \<forall>a. a \<in> set A \<or> P $ a"
lemma finfun_All_except_const: "finfun_All_except A (\<lambda>\<^isup>f b) \<longleftrightarrow> b \<or> set A = UNIV"
by(auto simp add: finfun_All_except_def)
@@ -1004,7 +1004,7 @@
"finfun_All_except A (\<lambda>\<^isup>f b) = (b \<or> is_list_UNIV A)"
by(simp add: finfun_All_except_const is_list_UNIV_iff)
-lemma finfun_All_except_update:
+lemma finfun_All_except_update:
"finfun_All_except A f(\<^sup>f a := b) = ((a \<in> set A \<or> b) \<and> finfun_All_except (a # A) f)"
by(fastforce simp add: finfun_All_except_def finfun_upd_apply)
@@ -1022,14 +1022,14 @@
lemma finfun_All_update: "finfun_All f(\<^sup>f a := b) = (b \<and> finfun_All_except [a] f)"
by(simp add: finfun_All_def finfun_All_except_update)
-lemma finfun_All_All: "finfun_All P = All P\<^sub>f"
+lemma finfun_All_All: "finfun_All P = All (op $ P)"
by(simp add: finfun_All_def finfun_All_except_def)
definition finfun_Ex :: "'a \<Rightarrow>f bool \<Rightarrow> bool"
where "finfun_Ex P = Not (finfun_All (Not \<circ>\<^isub>f P))"
-lemma finfun_Ex_Ex: "finfun_Ex P = Ex P\<^sub>f"
+lemma finfun_Ex_Ex: "finfun_Ex P = Ex (op $ P)"
unfolding finfun_Ex_def finfun_All_All by simp
lemma finfun_Ex_const [simp]: "finfun_Ex (\<lambda>\<^isup>f b) = b"
@@ -1039,23 +1039,23 @@
subsection {* A diagonal operator for FinFuns *}
definition finfun_Diag :: "'a \<Rightarrow>f 'b \<Rightarrow> 'a \<Rightarrow>f 'c \<Rightarrow> 'a \<Rightarrow>f ('b \<times> 'c)" ("(1'(_,/ _')\<^sup>f)" [0, 0] 1000)
-where [code del]: "finfun_Diag f g = finfun_rec (\<lambda>b. Pair b \<circ>\<^isub>f g) (\<lambda>a b c. c(\<^sup>f a := (b, g\<^sub>f a))) f"
+where [code del]: "finfun_Diag f g = finfun_rec (\<lambda>b. Pair b \<circ>\<^isub>f g) (\<lambda>a b c. c(\<^sup>f a := (b, g $ a))) f"
-interpretation finfun_Diag_aux: finfun_rec_wf_aux "\<lambda>b. Pair b \<circ>\<^isub>f g" "\<lambda>a b c. c(\<^sup>f a := (b, g\<^sub>f a))"
+interpretation finfun_Diag_aux: finfun_rec_wf_aux "\<lambda>b. Pair b \<circ>\<^isub>f g" "\<lambda>a b c. c(\<^sup>f a := (b, g $ a))"
by(unfold_locales)(simp_all add: expand_finfun_eq fun_eq_iff finfun_upd_apply)
-interpretation finfun_Diag: finfun_rec_wf "\<lambda>b. Pair b \<circ>\<^isub>f g" "\<lambda>a b c. c(\<^sup>f a := (b, g\<^sub>f a))"
+interpretation finfun_Diag: finfun_rec_wf "\<lambda>b. Pair b \<circ>\<^isub>f g" "\<lambda>a b c. c(\<^sup>f a := (b, g $ a))"
proof
fix b' b :: 'a
assume fin: "finite (UNIV :: 'c set)"
{ fix A :: "'c set"
- interpret comp_fun_commute "\<lambda>a c. c(\<^sup>f a := (b', g\<^sub>f a))" by(rule finfun_Diag_aux.upd_left_comm)
+ interpret comp_fun_commute "\<lambda>a c. c(\<^sup>f a := (b', g $ a))" by(rule finfun_Diag_aux.upd_left_comm)
from fin have "finite A" by(auto intro: finite_subset)
- hence "Finite_Set.fold (\<lambda>a c. c(\<^sup>f a := (b', g\<^sub>f a))) (Pair b \<circ>\<^isub>f g) A =
- Abs_finfun (\<lambda>a. (if a \<in> A then b' else b, g\<^sub>f a))"
+ hence "Finite_Set.fold (\<lambda>a c. c(\<^sup>f a := (b', g $ a))) (Pair b \<circ>\<^isub>f g) A =
+ Abs_finfun (\<lambda>a. (if a \<in> A then b' else b, g $ a))"
by(induct)(simp_all add: finfun_const_def finfun_comp_conv_comp o_def,
auto simp add: finfun_update_def Abs_finfun_inverse_finite fun_upd_def Abs_finfun_inject_finite fun_eq_iff fin) }
- from this[of UNIV] show "Finite_Set.fold (\<lambda>a c. c(\<^sup>f a := (b', g\<^sub>f a))) (Pair b \<circ>\<^isub>f g) UNIV = Pair b' \<circ>\<^isub>f g"
+ from this[of UNIV] show "Finite_Set.fold (\<lambda>a c. c(\<^sup>f a := (b', g $ a))) (Pair b \<circ>\<^isub>f g) UNIV = Pair b' \<circ>\<^isub>f g"
by(simp add: finfun_const_def finfun_comp_conv_comp o_def)
qed
@@ -1071,14 +1071,14 @@
"(\<lambda>\<^isup>f b, g(\<^sup>fc a := c))\<^sup>f = (\<lambda>\<^isup>f b, g)\<^sup>f(\<^sup>fc a := (b, c))"
by(simp_all add: finfun_Diag_const1)
-lemma finfun_Diag_update1: "(f(\<^sup>f a := b), g)\<^sup>f = (f, g)\<^sup>f(\<^sup>f a := (b, g\<^sub>f a))"
- and finfun_Diag_update1_code [code]: "(finfun_update_code f a b, g)\<^sup>f = (f, g)\<^sup>f(\<^sup>f a := (b, g\<^sub>f a))"
+lemma finfun_Diag_update1: "(f(\<^sup>f a := b), g)\<^sup>f = (f, g)\<^sup>f(\<^sup>f a := (b, g $ a))"
+ and finfun_Diag_update1_code [code]: "(finfun_update_code f a b, g)\<^sup>f = (f, g)\<^sup>f(\<^sup>f a := (b, g $ a))"
by(simp_all add: finfun_Diag_def)
lemma finfun_Diag_const2: "(f, \<lambda>\<^isup>f c)\<^sup>f = (\<lambda>b. (b, c)) \<circ>\<^isub>f f"
by(induct f rule: finfun_weak_induct)(auto intro!: finfun_ext simp add: finfun_upd_apply finfun_Diag_const1 finfun_Diag_update1)
-lemma finfun_Diag_update2: "(f, g(\<^sup>f a := c))\<^sup>f = (f, g)\<^sup>f(\<^sup>f a := (f\<^sub>f a, c))"
+lemma finfun_Diag_update2: "(f, g(\<^sup>f a := c))\<^sup>f = (f, g)\<^sup>f(\<^sup>f a := (f $ a, c))"
by(induct f rule: finfun_weak_induct)(auto intro!: finfun_ext simp add: finfun_upd_apply finfun_Diag_const1 finfun_Diag_update1)
lemma finfun_Diag_const_const [simp]: "(\<lambda>\<^isup>f b, \<lambda>\<^isup>f c)\<^sup>f = (\<lambda>\<^isup>f (b, c))"
@@ -1093,23 +1093,23 @@
by(simp add: finfun_Diag_def)
lemma finfun_Diag_update_update:
- "(f(\<^sup>f a := b), g(\<^sup>f a' := c))\<^sup>f = (if a = a' then (f, g)\<^sup>f(\<^sup>f a := (b, c)) else (f, g)\<^sup>f(\<^sup>f a := (b, g\<^sub>f a))(\<^sup>f a' := (f\<^sub>f a', c)))"
+ "(f(\<^sup>f a := b), g(\<^sup>f a' := c))\<^sup>f = (if a = a' then (f, g)\<^sup>f(\<^sup>f a := (b, c)) else (f, g)\<^sup>f(\<^sup>f a := (b, g $ a))(\<^sup>f a' := (f $ a', c)))"
by(auto simp add: finfun_Diag_update1 finfun_Diag_update2)
-lemma finfun_Diag_apply [simp]: "(f, g)\<^sup>f\<^sub>f = (\<lambda>x. (f\<^sub>f x, g\<^sub>f x))"
-by(induct f rule: finfun_weak_induct)(auto simp add: finfun_Diag_const1 finfun_Diag_update1 finfun_upd_apply intro: ext)
+lemma finfun_Diag_apply [simp]: "op $ (f, g)\<^sup>f = (\<lambda>x. (f $ x, g $ x))"
+by(induct f rule: finfun_weak_induct)(auto simp add: finfun_Diag_const1 finfun_Diag_update1 finfun_upd_apply)
lemma finfun_Diag_conv_Abs_finfun:
- "(f, g)\<^sup>f = Abs_finfun ((\<lambda>x. (finfun_apply f x, finfun_apply g x)))"
+ "(f, g)\<^sup>f = Abs_finfun ((\<lambda>x. (f $ x, g $ x)))"
including finfun
proof -
- have "(\<lambda>f :: 'a \<Rightarrow>f 'b. (f, g)\<^sup>f) = (\<lambda>f. Abs_finfun ((\<lambda>x. (finfun_apply f x, finfun_apply g x))))"
+ have "(\<lambda>f :: 'a \<Rightarrow>f 'b. (f, g)\<^sup>f) = (\<lambda>f. Abs_finfun ((\<lambda>x. (f $ x, g $ x))))"
proof(rule finfun_rec_unique)
- { fix c show "Abs_finfun (\<lambda>x. (finfun_apply (\<lambda>\<^isup>f c) x, finfun_apply g x)) = Pair c \<circ>\<^isub>f g"
+ { fix c show "Abs_finfun (\<lambda>x. ((\<lambda>\<^isup>f c) $ x, g $ x)) = Pair c \<circ>\<^isub>f g"
by(simp add: finfun_comp_conv_comp o_def finfun_const_def) }
{ fix g' a b
- show "Abs_finfun (\<lambda>x. (finfun_apply g'(\<^sup>f a := b) x, finfun_apply g x)) =
- (Abs_finfun (\<lambda>x. (finfun_apply g' x, finfun_apply g x)))(\<^sup>f a := (b, g\<^sub>f a))"
+ show "Abs_finfun (\<lambda>x. (g'(\<^sup>f a := b) $ x, g $ x)) =
+ (Abs_finfun (\<lambda>x. (g' $ x, g $ x)))(\<^sup>f a := (b, g $ a))"
by(auto simp add: finfun_update_def fun_eq_iff simp del: fun_upd_apply) simp }
qed(simp_all add: finfun_Diag_const1 finfun_Diag_update1)
thus ?thesis by(auto simp add: fun_eq_iff)
@@ -1165,14 +1165,14 @@
subsection {* Currying for FinFuns *}
definition finfun_curry :: "('a \<times> 'b) \<Rightarrow>f 'c \<Rightarrow> 'a \<Rightarrow>f 'b \<Rightarrow>f 'c"
-where [code del]: "finfun_curry = finfun_rec (finfun_const \<circ> finfun_const) (\<lambda>(a, b) c f. f(\<^sup>f a := (f\<^sub>f a)(\<^sup>f b := c)))"
+where [code del]: "finfun_curry = finfun_rec (finfun_const \<circ> finfun_const) (\<lambda>(a, b) c f. f(\<^sup>f a := (f $ a)(\<^sup>f b := c)))"
-interpretation finfun_curry_aux: finfun_rec_wf_aux "finfun_const \<circ> finfun_const" "\<lambda>(a, b) c f. f(\<^sup>f a := (f\<^sub>f a)(\<^sup>f b := c))"
+interpretation finfun_curry_aux: finfun_rec_wf_aux "finfun_const \<circ> finfun_const" "\<lambda>(a, b) c f. f(\<^sup>f a := (f $ a)(\<^sup>f b := c))"
apply(unfold_locales)
apply(auto simp add: split_def finfun_update_twist finfun_upd_apply split_paired_all finfun_update_const_same)
done
-interpretation finfun_curry: finfun_rec_wf "finfun_const \<circ> finfun_const" "\<lambda>(a, b) c f. f(\<^sup>f a := (f\<^sub>f a)(\<^sup>f b := c))"
+interpretation finfun_curry: finfun_rec_wf "finfun_const \<circ> finfun_const" "\<lambda>(a, b) c f. f(\<^sup>f a := (f $ a)(\<^sup>f b := c))"
proof(unfold_locales)
fix b' b :: 'b
assume fin: "finite (UNIV :: ('c \<times> 'a) set)"
@@ -1181,13 +1181,13 @@
by(fastforce dest: finite_cartesian_productD1 finite_cartesian_productD2)+
note [simp] = Abs_finfun_inverse_finite[OF fin] Abs_finfun_inverse_finite[OF fin1] Abs_finfun_inverse_finite[OF fin2]
{ fix A :: "('c \<times> 'a) set"
- interpret comp_fun_commute "\<lambda>a :: 'c \<times> 'a. (\<lambda>(a, b) c f. f(\<^sup>f a := (f\<^sub>f a)(\<^sup>f b := c))) a b'"
+ interpret comp_fun_commute "\<lambda>a :: 'c \<times> 'a. (\<lambda>(a, b) c f. f(\<^sup>f a := (f $ a)(\<^sup>f b := c))) a b'"
by(rule finfun_curry_aux.upd_left_comm)
from fin have "finite A" by(auto intro: finite_subset)
- hence "Finite_Set.fold (\<lambda>a :: 'c \<times> 'a. (\<lambda>(a, b) c f. f(\<^sup>f a := (f\<^sub>f a)(\<^sup>f b := c))) a b') ((finfun_const \<circ> finfun_const) b) A = Abs_finfun (\<lambda>a. Abs_finfun (\<lambda>b''. if (a, b'') \<in> A then b' else b))"
+ hence "Finite_Set.fold (\<lambda>a :: 'c \<times> 'a. (\<lambda>(a, b) c f. f(\<^sup>f a := (f $ a)(\<^sup>f b := c))) a b') ((finfun_const \<circ> finfun_const) b) A = Abs_finfun (\<lambda>a. Abs_finfun (\<lambda>b''. if (a, b'') \<in> A then b' else b))"
by induct (simp_all, auto simp add: finfun_update_def finfun_const_def split_def intro!: arg_cong[where f="Abs_finfun"] ext) }
from this[of UNIV]
- show "Finite_Set.fold (\<lambda>a :: 'c \<times> 'a. (\<lambda>(a, b) c f. f(\<^sup>f a := (f\<^sub>f a)(\<^sup>f b := c))) a b') ((finfun_const \<circ> finfun_const) b) UNIV = (finfun_const \<circ> finfun_const) b'"
+ show "Finite_Set.fold (\<lambda>a :: 'c \<times> 'a. (\<lambda>(a, b) c f. f(\<^sup>f a := (f $ a)(\<^sup>f b := c))) a b') ((finfun_const \<circ> finfun_const) b) UNIV = (finfun_const \<circ> finfun_const) b'"
by(simp add: finfun_const_def)
qed
@@ -1195,9 +1195,9 @@
by(simp add: finfun_curry_def)
lemma finfun_curry_update [simp]:
- "finfun_curry (f(\<^sup>f (a, b) := c)) = (finfun_curry f)(\<^sup>f a := ((finfun_curry f)\<^sub>f a)(\<^sup>f b := c))"
+ "finfun_curry (f(\<^sup>f (a, b) := c)) = (finfun_curry f)(\<^sup>f a := (finfun_curry f $ a)(\<^sup>f b := c))"
and finfun_curry_update_code [code]:
- "finfun_curry (f(\<^sup>fc (a, b) := c)) = (finfun_curry f)(\<^sup>f a := ((finfun_curry f)\<^sub>f a)(\<^sup>f b := c))"
+ "finfun_curry (f(\<^sup>fc (a, b) := c)) = (finfun_curry f)(\<^sup>f a := (finfun_curry f $ a)(\<^sup>f b := c))"
by(simp_all add: finfun_curry_def)
lemma finfun_Abs_finfun_curry: assumes fin: "f \<in> finfun"
@@ -1222,15 +1222,15 @@
proof(rule finfun_rec_unique)
fix c show "finfun_curry (\<lambda>\<^isup>f c) = (\<lambda>\<^isup>f \<lambda>\<^isup>f c)" by simp
fix f a
- show "finfun_curry (f(\<^sup>f a := c)) = (finfun_curry f)(\<^sup>f fst a := ((finfun_curry f)\<^sub>f (fst a))(\<^sup>f snd a := c))"
+ show "finfun_curry (f(\<^sup>f a := c)) = (finfun_curry f)(\<^sup>f fst a := (finfun_curry f $ (fst a))(\<^sup>f snd a := c))"
by(cases a) simp
show "Abs_finfun (\<lambda>a. Abs_finfun (curry (finfun_apply (\<lambda>\<^isup>f c)) a)) = (\<lambda>\<^isup>f \<lambda>\<^isup>f c)"
by(simp add: finfun_curry_def finfun_const_def curry_def)
fix g b
- show "Abs_finfun (\<lambda>aa. Abs_finfun (curry (finfun_apply g(\<^sup>f a := b)) aa)) =
- (Abs_finfun (\<lambda>a. Abs_finfun (curry (finfun_apply g) a)))(\<^sup>f
- fst a := ((Abs_finfun (\<lambda>a. Abs_finfun (curry (finfun_apply g) a)))\<^sub>f (fst a))(\<^sup>f snd a := b))"
- by(cases a)(auto intro!: ext arg_cong[where f=Abs_finfun] simp add: finfun_curry_def finfun_update_def finfun_curry finfun_Abs_finfun_curry)
+ show "Abs_finfun (\<lambda>aa. Abs_finfun (curry (op $ g(\<^sup>f a := b)) aa)) =
+ (Abs_finfun (\<lambda>a. Abs_finfun (curry (op $ g) a)))(\<^sup>f
+ fst a := ((Abs_finfun (\<lambda>a. Abs_finfun (curry (op $ g) a))) $ (fst a))(\<^sup>f snd a := b))"
+ by(cases a)(auto intro!: ext arg_cong[where f=Abs_finfun] simp add: finfun_curry_def finfun_update_def finfun_Abs_finfun_curry)
qed
thus ?thesis by(auto simp add: fun_eq_iff)
qed
@@ -1263,7 +1263,7 @@
subsection {* The domain of a FinFun as a FinFun *}
definition finfun_dom :: "('a \<Rightarrow>f 'b) \<Rightarrow> ('a \<Rightarrow>f bool)"
-where [code del]: "finfun_dom f = Abs_finfun (\<lambda>a. f\<^sub>f a \<noteq> finfun_default f)"
+where [code del]: "finfun_dom f = Abs_finfun (\<lambda>a. f $ a \<noteq> finfun_default f)"
lemma finfun_dom_const:
"finfun_dom ((\<lambda>\<^isup>f c) :: 'a \<Rightarrow>f 'b) = (\<lambda>\<^isup>f finite (UNIV :: 'a set) \<and> c \<noteq> undefined)"
@@ -1281,7 +1281,7 @@
unfolding card_UNIV_eq_0_infinite_UNIV
by(simp add: finfun_dom_const)
-lemma finfun_dom_finfunI: "(\<lambda>a. f\<^sub>f a \<noteq> finfun_default f) \<in> finfun"
+lemma finfun_dom_finfunI: "(\<lambda>a. f $ a \<noteq> finfun_default f) \<in> finfun"
using finite_finfun_default[of f]
by(simp add: finfun_def exI[where x=False])
@@ -1297,7 +1297,7 @@
"finfun_dom (finfun_update_code f a b) = finfun_update_code (finfun_dom f) a (b \<noteq> finfun_default f)"
by(simp)
-lemma finite_finfun_dom: "finite {x. (finfun_dom f)\<^sub>f x}"
+lemma finite_finfun_dom: "finite {x. finfun_dom f $ x}"
proof(induct f rule: finfun_weak_induct)
case (const b)
thus ?case
@@ -1305,8 +1305,8 @@
(auto simp add: finfun_dom_const UNIV_def [symmetric] Set.empty_def [symmetric])
next
case (update f a b)
- have "{x. (finfun_dom f(\<^sup>f a := b))\<^sub>f x} =
- (if b = finfun_default f then {x. (finfun_dom f)\<^sub>f x} - {a} else insert a {x. (finfun_dom f)\<^sub>f x})"
+ have "{x. finfun_dom f(\<^sup>f a := b) $ x} =
+ (if b = finfun_default f then {x. finfun_dom f $ x} - {a} else insert a {x. finfun_dom f $ x})"
by (auto simp add: finfun_upd_apply split: split_if_asm)
thus ?case using update by simp
qed
@@ -1316,9 +1316,9 @@
definition finfun_to_list :: "('a :: linorder) \<Rightarrow>f 'b \<Rightarrow> 'a list"
where
- "finfun_to_list f = (THE xs. set xs = {x. (finfun_dom f)\<^sub>f x} \<and> sorted xs \<and> distinct xs)"
+ "finfun_to_list f = (THE xs. set xs = {x. finfun_dom f $ x} \<and> sorted xs \<and> distinct xs)"
-lemma set_finfun_to_list [simp]: "set (finfun_to_list f) = {x. (finfun_dom f)\<^sub>f x}" (is ?thesis1)
+lemma set_finfun_to_list [simp]: "set (finfun_to_list f) = {x. finfun_dom f $ x}" (is ?thesis1)
and sorted_finfun_to_list: "sorted (finfun_to_list f)" (is ?thesis2)
and distinct_finfun_to_list: "distinct (finfun_to_list f)" (is ?thesis3)
proof -
@@ -1328,10 +1328,10 @@
thus ?thesis1 ?thesis2 ?thesis3 by simp_all
qed
-lemma finfun_const_False_conv_bot: "(\<lambda>\<^isup>f False)\<^sub>f = bot"
+lemma finfun_const_False_conv_bot: "op $ (\<lambda>\<^isup>f False) = bot"
by auto
-lemma finfun_const_True_conv_top: "(\<lambda>\<^isup>f True)\<^sub>f = top"
+lemma finfun_const_True_conv_top: "op $ (\<lambda>\<^isup>f True) = top"
by auto
lemma finfun_to_list_const:
@@ -1350,7 +1350,7 @@
by (metis insort_insert_insort remove1_insort)
lemma finfun_dom_conv:
- "(finfun_dom f)\<^sub>f x \<longleftrightarrow> f\<^sub>f x \<noteq> finfun_default f"
+ "finfun_dom f $ x \<longleftrightarrow> f $ x \<noteq> finfun_default f"
by(induct f rule: finfun_weak_induct)(auto simp add: finfun_dom_const finfun_default_const finfun_default_update_const finfun_upd_apply)
lemma finfun_to_list_update:
@@ -1358,33 +1358,33 @@
(if b = finfun_default f then List.remove1 a (finfun_to_list f) else List.insort_insert a (finfun_to_list f))"
proof(subst finfun_to_list_def, rule the_equality)
fix xs
- assume "set xs = {x. (finfun_dom f(\<^sup>f a := b))\<^sub>f x} \<and> sorted xs \<and> distinct xs"
- hence eq: "set xs = {x. (finfun_dom f(\<^sup>f a := b))\<^sub>f x}"
+ assume "set xs = {x. finfun_dom f(\<^sup>f a := b) $ x} \<and> sorted xs \<and> distinct xs"
+ hence eq: "set xs = {x. finfun_dom f(\<^sup>f a := b) $ x}"
and [simp]: "sorted xs" "distinct xs" by simp_all
show "xs = (if b = finfun_default f then remove1 a (finfun_to_list f) else insort_insert a (finfun_to_list f))"
proof(cases "b = finfun_default f")
case True [simp]
show ?thesis
- proof(cases "(finfun_dom f)\<^sub>f a")
+ proof(cases "finfun_dom f $ a")
case True
have "finfun_to_list f = insort_insert a xs"
unfolding finfun_to_list_def
proof(rule the_equality)
have "set (insort_insert a xs) = insert a (set xs)" by(simp add: set_insort_insert)
also note eq also
- have "insert a {x. (finfun_dom f(\<^sup>f a := b))\<^sub>f x} = {x. (finfun_dom f)\<^sub>f x}" using True
+ have "insert a {x. finfun_dom f(\<^sup>f a := b) $ x} = {x. finfun_dom f $ x}" using True
by(auto simp add: finfun_upd_apply split: split_if_asm)
- finally show 1: "set (insort_insert a xs) = {x. (finfun_dom f)\<^sub>f x} \<and> sorted (insort_insert a xs) \<and> distinct (insort_insert a xs)"
+ finally show 1: "set (insort_insert a xs) = {x. finfun_dom f $ x} \<and> sorted (insort_insert a xs) \<and> distinct (insort_insert a xs)"
by(simp add: sorted_insort_insert distinct_insort_insert)
fix xs'
- assume "set xs' = {x. (finfun_dom f)\<^sub>f x} \<and> sorted xs' \<and> distinct xs'"
+ assume "set xs' = {x. finfun_dom f $ x} \<and> sorted xs' \<and> distinct xs'"
thus "xs' = insort_insert a xs" using 1 by(auto dest: sorted_distinct_set_unique)
qed
with eq True show ?thesis by(simp add: remove1_insort_insert_same)
next
case False
- hence "f\<^sub>f a = b" by(auto simp add: finfun_dom_conv)
+ hence "f $ a = b" by(auto simp add: finfun_dom_conv)
hence f: "f(\<^sup>f a := b) = f" by(simp add: expand_finfun_eq fun_eq_iff finfun_upd_apply)
from eq have "finfun_to_list f = xs" unfolding f finfun_to_list_def
by(auto elim: sorted_distinct_set_unique intro!: the_equality)
@@ -1393,18 +1393,18 @@
next
case False
show ?thesis
- proof(cases "(finfun_dom f)\<^sub>f a")
+ proof(cases "finfun_dom f $ a")
case True
have "finfun_to_list f = xs"
unfolding finfun_to_list_def
proof(rule the_equality)
have "finfun_dom f = finfun_dom f(\<^sup>f a := b)" using False True
by(simp add: expand_finfun_eq fun_eq_iff finfun_upd_apply)
- with eq show 1: "set xs = {x. (finfun_dom f)\<^sub>f x} \<and> sorted xs \<and> distinct xs"
+ with eq show 1: "set xs = {x. finfun_dom f $ x} \<and> sorted xs \<and> distinct xs"
by(simp del: finfun_dom_update)
fix xs'
- assume "set xs' = {x. (finfun_dom f)\<^sub>f x} \<and> sorted xs' \<and> distinct xs'"
+ assume "set xs' = {x. finfun_dom f $ x} \<and> sorted xs' \<and> distinct xs'"
thus "xs' = xs" using 1 by(auto elim: sorted_distinct_set_unique)
qed
thus ?thesis using False True eq by(simp add: insort_insert_triv)
@@ -1415,13 +1415,13 @@
proof(rule the_equality)
have "set (remove1 a xs) = set xs - {a}" by simp
also note eq also
- have "{x. (finfun_dom f(\<^sup>f a := b))\<^sub>f x} - {a} = {x. (finfun_dom f)\<^sub>f x}" using False
+ have "{x. finfun_dom f(\<^sup>f a := b) $ x} - {a} = {x. finfun_dom f $ x}" using False
by(auto simp add: finfun_upd_apply split: split_if_asm)
- finally show 1: "set (remove1 a xs) = {x. (finfun_dom f)\<^sub>f x} \<and> sorted (remove1 a xs) \<and> distinct (remove1 a xs)"
+ finally show 1: "set (remove1 a xs) = {x. finfun_dom f $ x} \<and> sorted (remove1 a xs) \<and> distinct (remove1 a xs)"
by(simp add: sorted_remove1)
fix xs'
- assume "set xs' = {x. (finfun_dom f)\<^sub>f x} \<and> sorted xs' \<and> distinct xs'"
+ assume "set xs' = {x. finfun_dom f $ x} \<and> sorted xs' \<and> distinct xs'"
thus "xs' = remove1 a xs" using 1 by(blast intro: sorted_distinct_set_unique)
qed
thus ?thesis using False eq `b \<noteq> finfun_default f`