src/HOL/Algebra/Bij.thy
changeset 16417 9bc16273c2d4
parent 14963 d584e32f7d46
child 20318 0e0ea63fe768
--- a/src/HOL/Algebra/Bij.thy	Fri Jun 17 11:35:35 2005 +0200
+++ b/src/HOL/Algebra/Bij.thy	Fri Jun 17 16:12:49 2005 +0200
@@ -5,7 +5,7 @@
 
 header {* Bijections of a Set, Permutation Groups, Automorphism Groups *}
 
-theory Bij = Group:
+theory Bij imports Group begin
 
 constdefs
   Bij :: "'a set \<Rightarrow> ('a \<Rightarrow> 'a) set"