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added caveat
authoroheimb
Mon, 30 Mar 1998 21:06:09 +0200
changeset 4761 1681b32dd134
parent 4760 9cdbd5a1d25a
child 4762 afebaa81f148
added caveat
src/HOL/Set.thy file | annotate | diff | comparison | revisions 
--- a/src/HOL/Set.thy	Mon Mar 30 21:05:25 1998 +0200
+++ b/src/HOL/Set.thy	Mon Mar 30 21:06:09 1998 +0200
@@ -18,7 +18,7 @@
   set :: (term) term
 
 instance
-  set :: (term) {ord, minus, power}
+  set :: (term) {ord, minus, power} (* only ('a * 'a) set should be in power! *)
 
 syntax
   "op :"        :: ['a, 'a set] => bool             ("op :")
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