tuned proof
authorhaftmann
Fri, 02 Jul 2010 16:50:52 +0200
changeset 37699 f110a9fa8766
parent 37698 e38abf437c20
child 37700 bd90378b8171
tuned proof
src/HOL/Library/Fset.thy
--- a/src/HOL/Library/Fset.thy	Fri Jul 02 16:20:56 2010 +0200
+++ b/src/HOL/Library/Fset.thy	Fri Jul 02 16:50:52 2010 +0200
@@ -18,7 +18,7 @@
 
 lemma Fset_member [simp]:
   "Fset (member A) = A"
-  by (rule member_inverse)
+  by (fact member_inverse)
 
 declare member_inject [simp]