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src/HOL/Set.thy
changeset 5780 0187f936685a
parent 5492 d9fc3457554e
child 5931 325300576da7 
--- a/src/HOL/Set.thy	Fri Oct 30 10:43:12 1998 +0100
+++ b/src/HOL/Set.thy	Fri Oct 30 10:45:08 1998 +0100
@@ -18,7 +18,7 @@
   set :: (term) term
 
 instance
-  set :: (term) {ord, minus, power} (* only ('a * 'a) set should be in power! *)
+  set :: (term) {ord, minus}
 
 syntax
   "op :"        :: ['a, 'a set] => bool             ("op :")
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