# HG changeset patch
# User nipkow
# Date 1430240968 -7200
# Node ID 9023d59acce6133527e3520f643592e13f6b9454
# Parent  bd773c47ad0b429c104e0381134a4dd71d1ff2ff
undid 6d7b7a037e8d

diff -r bd773c47ad0b -r 9023d59acce6 src/HOL/Extraction.thy
--- a/src/HOL/Extraction.thy	Tue Apr 28 16:23:38 2015 +0100
+++ b/src/HOL/Extraction.thy	Tue Apr 28 19:09:28 2015 +0200
@@ -32,7 +32,7 @@
   induct_atomize induct_atomize' induct_rulify induct_rulify'
   induct_rulify_fallback induct_trueI
   True_implies_equals implies_True_equals TrueE
-  False_implies_equals implies_False_swap
+  False_implies_equals
 
 lemmas [extraction_expand_def] =
   HOL.induct_forall_def HOL.induct_implies_def HOL.induct_equal_def HOL.induct_conj_def
diff -r bd773c47ad0b -r 9023d59acce6 src/HOL/HOL.thy
--- a/src/HOL/HOL.thy	Tue Apr 28 16:23:38 2015 +0100
+++ b/src/HOL/HOL.thy	Tue Apr 28 19:09:28 2015 +0200
@@ -1270,10 +1270,6 @@
 lemma False_implies_equals: "(False \<Longrightarrow> P) \<equiv> Trueprop True"
 by default simp_all
 
-lemma implies_False_swap:
-  "(False \<Longrightarrow> PROP P \<Longrightarrow> PROP Q) \<equiv> (PROP P \<Longrightarrow> False \<Longrightarrow> PROP Q)"
-by(rule swap_prems_eq)
-
 lemma ex_simps:
   "!!P Q. (EX x. P x & Q)   = ((EX x. P x) & Q)"
   "!!P Q. (EX x. P & Q x)   = (P & (EX x. Q x))"
@@ -1297,7 +1293,7 @@
 lemmas [simp] =
   triv_forall_equality (*prunes params*)
   True_implies_equals implies_True_equals (*prune True in asms*)
-  False_implies_equals implies_False_swap (*prune False in asms*)
+  False_implies_equals (*prune False in asms*)
   if_True
   if_False
   if_cancel
diff -r bd773c47ad0b -r 9023d59acce6 src/HOL/Hoare_Parallel/OG_Examples.thy
--- a/src/HOL/Hoare_Parallel/OG_Examples.thy	Tue Apr 28 16:23:38 2015 +0100
+++ b/src/HOL/Hoare_Parallel/OG_Examples.thy	Tue Apr 28 19:09:28 2015 +0200
@@ -192,7 +192,6 @@
 --\<open>6 subgoals left\<close>
 prefer 6
 apply(erule_tac x=i in allE)
-apply simp
 apply fastforce
 --\<open>5 subgoals left\<close>
 prefer 5