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src/HOL/Nitpick_Examples/Hotel_Nits.thy
changeset 42463 f270e3e18be5
parent 42208 02513eb26eb7
child 45035 60d2c03d5c70 
--- a/src/HOL/Nitpick_Examples/Hotel_Nits.thy	Fri Apr 22 15:57:43 2011 +0200
+++ b/src/HOL/Nitpick_Examples/Hotel_Nits.thy	Sat Apr 23 13:00:19 2011 +0200
@@ -19,7 +19,7 @@
 typedecl key
 typedecl room
 
-types keycard = "key \<times> key"
+type_synonym keycard = "key \<times> key"
 
 record state =
   owns :: "room \<Rightarrow> guest option"
isabelle