diff -r c5a8b612e571 -r 0040bafffdef src/HOL/TLA/Action.thy
--- a/src/HOL/TLA/Action.thy	Thu Jul 01 16:54:42 2010 +0200
+++ b/src/HOL/TLA/Action.thy	Thu Jul 01 16:54:44 2010 +0200
@@ -16,8 +16,7 @@
   'a trfun = "(state * state) => 'a"
   action   = "bool trfun"
 
-arities
-  "*" :: (world, world) world
+arities prod :: (world, world) world
 
 consts
   (** abstract syntax **)