changeset 39190 | a2775776be3f |
parent 38857 | 97775f3e8722 |
child 39200 | bb93713b0925 |
--- a/src/HOL/Library/Fset.thy Tue Sep 07 11:51:53 2010 +0200 +++ b/src/HOL/Library/Fset.thy Tue Sep 07 11:51:53 2010 +0200 @@ -230,7 +230,7 @@ instantiation fset :: (type) equal begin -definition +definition [code]: "HOL.equal A B \<longleftrightarrow> A \<le> B \<and> B \<le> (A :: 'a fset)" instance proof