src/HOL/Set.thy
changeset 4761 1681b32dd134
parent 4159 4aff9b7e5597
child 5144 7ac22e5a05d7
     1.1 --- a/src/HOL/Set.thy	Mon Mar 30 21:05:25 1998 +0200
     1.2 +++ b/src/HOL/Set.thy	Mon Mar 30 21:06:09 1998 +0200
     1.3 @@ -18,7 +18,7 @@
     1.4    set :: (term) term
     1.5  
     1.6  instance
     1.7 -  set :: (term) {ord, minus, power}
     1.8 +  set :: (term) {ord, minus, power} (* only ('a * 'a) set should be in power! *)
     1.9  
    1.10  syntax
    1.11    "op :"        :: ['a, 'a set] => bool             ("op :")