1.1 --- a/src/HOL/Set.thy	Fri Oct 30 10:43:12 1998 +0100
     1.2 +++ b/src/HOL/Set.thy	Fri Oct 30 10:45:08 1998 +0100
     1.3 @@ -18,7 +18,7 @@
     1.4    set :: (term) term
     1.5  
     1.6  instance
     1.7 -  set :: (term) {ord, minus, power} (* only ('a * 'a) set should be in power! *)
     1.8 +  set :: (term) {ord, minus}
     1.9  
    1.10  syntax
    1.11    "op :"        :: ['a, 'a set] => bool             ("op :")