--- a/src/ZF/AC/OrdQuant.ML Fri Jan 03 10:48:28 1997 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,104 +0,0 @@
-(* Title: ZF/AC/OrdQuant.thy
- ID: $Id$
- Authors: Krzysztof Grabczewski and L C Paulson
-
-Quantifiers and union operator for ordinals.
-*)
-
-open OrdQuant;
-
-(*** universal quantifier for ordinals ***)
-
-qed_goalw "oallI" thy [oall_def]
- "[| !!x. x<A ==> P(x) |] ==> ALL x<A. P(x)"
- (fn prems=> [ (REPEAT (ares_tac (prems @ [allI,impI]) 1)) ]);
-
-qed_goalw "ospec" thy [oall_def]
- "[| ALL x<A. P(x); x<A |] ==> P(x)"
- (fn major::prems=>
- [ (rtac (major RS spec RS mp) 1),
- (resolve_tac prems 1) ]);
-
-qed_goalw "oallE" thy [oall_def]
- "[| ALL x<A. P(x); P(x) ==> Q; ~x<A ==> Q |] ==> Q"
- (fn major::prems=>
- [ (rtac (major RS allE) 1),
- (REPEAT (eresolve_tac (prems@[asm_rl,impCE]) 1)) ]);
-
-qed_goal "rev_oallE" thy
- "[| ALL x<A. P(x); ~x<A ==> Q; P(x) ==> Q |] ==> Q"
- (fn major::prems=>
- [ (rtac (major RS oallE) 1),
- (REPEAT (eresolve_tac prems 1)) ]);
-
-(*Trival rewrite rule; (ALL x<a.P)<->P holds only if a is not 0!*)
-qed_goal "oall_simp" thy "(ALL x<a. True) <-> True"
- (fn _=> [ (REPEAT (ares_tac [TrueI,oallI,iffI] 1)) ]);
-
-(*Congruence rule for rewriting*)
-qed_goalw "oall_cong" thy [oall_def]
- "[| a=a'; !!x. x<a' ==> P(x) <-> P'(x) |] ==> oall(a,P) <-> oall(a',P')"
- (fn prems=> [ (simp_tac (FOL_ss addsimps prems) 1) ]);
-
-
-(*** existential quantifier for ordinals ***)
-
-qed_goalw "oexI" thy [oex_def]
- "[| P(x); x<A |] ==> EX x<A. P(x)"
- (fn prems=> [ (REPEAT (ares_tac (prems @ [exI,conjI]) 1)) ]);
-
-(*Not of the general form for such rules; ~EX has become ALL~ *)
-qed_goal "oexCI" thy
- "[| ALL x<A. ~P(x) ==> P(a); a<A |] ==> EX x<A.P(x)"
- (fn prems=>
- [ (rtac classical 1),
- (REPEAT (ares_tac (prems@[oexI,oallI,notI,notE]) 1)) ]);
-
-qed_goalw "oexE" thy [oex_def]
- "[| EX x<A. P(x); !!x. [| x<A; P(x) |] ==> Q \
-\ |] ==> Q"
- (fn major::prems=>
- [ (rtac (major RS exE) 1),
- (REPEAT (eresolve_tac (prems @ [asm_rl,conjE]) 1)) ]);
-
-qed_goalw "oex_cong" thy [oex_def]
- "[| a=a'; !!x. x<a' ==> P(x) <-> P'(x) \
-\ |] ==> oex(a,P) <-> oex(a',P')"
- (fn prems=> [ (simp_tac (FOL_ss addsimps prems addcongs [conj_cong]) 1) ]);
-
-
-(*** Rules for Ordinal-Indexed Unions ***)
-
-qed_goalw "OUN_I" thy [OUnion_def]
- "!!i. [| a<i; b: B(a) |] ==> b: (UN z<i. B(z))"
- (fn _=> [ fast_tac (ZF_cs addSEs [ltE]) 1 ]);
-
-qed_goalw "OUN_E" thy [OUnion_def]
- "[| b : (UN z<i. B(z)); !!a.[| b: B(a); a<i |] ==> R |] ==> R"
- (fn major::prems=>
- [ (rtac (major RS CollectE) 1),
- (rtac UN_E 1),
- (REPEAT (ares_tac (ltI::prems) 1)) ]);
-
-qed_goalw "OUN_iff" thy [oex_def]
- "b : (UN x<i. B(x)) <-> (EX x<i. b : B(x))"
- (fn _=> [ (fast_tac (FOL_cs addIs [OUN_I] addSEs [OUN_E]) 1) ]);
-
-qed_goal "OUN_cong" thy
- "[| i=j; !!x. x<j ==> C(x)=D(x) |] ==> (UN x<i.C(x)) = (UN x<j.D(x))"
- (fn prems=>
- [ rtac equality_iffI 1,
- simp_tac (ZF_ss addcongs [oex_cong] addsimps (OUN_iff::prems)) 1 ]);
-
-val OrdQuant_cs = ZF_cs
- addSIs [oallI]
- addIs [oexI, OUN_I]
- addSEs [oexE, OUN_E]
- addEs [rev_oallE];
-
-val Ord_atomize = atomize (("oall", [ospec])::ZF_conn_pairs,
- ZF_mem_pairs);
-
-val OrdQuant_ss = ZF_ss setmksimps (map mk_meta_eq o Ord_atomize o gen_all)
- addsimps [oall_simp, ltD RS beta]
- addcongs [oall_cong, oex_cong, OUN_cong];