src/HOL/Algebra/Bij.thy
changeset 31754 b5260f5272a4
parent 27717 21bbd410ba04
child 32988 d1d4d7a08a66
     1.1 --- a/src/HOL/Algebra/Bij.thy	Mon Jun 22 08:17:52 2009 +0200
     1.2 +++ b/src/HOL/Algebra/Bij.thy	Mon Jun 22 20:59:12 2009 +0200
     1.3 @@ -50,7 +50,7 @@
     1.4      apply (simp add: compose_Bij)
     1.5     apply (simp add: id_Bij)
     1.6    apply (simp add: compose_Bij)
     1.7 -  apply (blast intro: compose_assoc [symmetric] Bij_imp_funcset)
     1.8 +  apply (blast intro: compose_assoc [symmetric] dest: Bij_imp_funcset)
     1.9   apply (simp add: id_Bij Bij_imp_funcset Bij_imp_extensional, simp)
    1.10  apply (blast intro: Bij_compose_restrict_eq restrict_Inv_Bij)
    1.11  done