src/HOL/Relation.thy
changeset 10832 e33b47e4246d
parent 10797 028d22926a41
child 11136 e34e7f6d9b57
     1.1 --- a/src/HOL/Relation.thy	Tue Jan 09 15:18:07 2001 +0100
     1.2 +++ b/src/HOL/Relation.thy	Tue Jan 09 15:22:13 2001 +0100
     1.3 @@ -16,8 +16,8 @@
     1.4    comp  :: "[('b * 'c)set, ('a * 'b)set] => ('a * 'c)set"  (infixr "O" 60)
     1.5      "r O s == {(x,z). ? y. (x,y):s & (y,z):r}"
     1.6  
     1.7 -  Image :: "[('a*'b) set,'a set] => 'b set"                (infixl "```" 90)
     1.8 -    "r ``` s == {y. ? x:s. (x,y):r}"
     1.9 +  Image :: "[('a*'b) set,'a set] => 'b set"                (infixl "``" 90)
    1.10 +    "r `` s == {y. ? x:s. (x,y):r}"
    1.11  
    1.12    Id    :: "('a * 'a)set"                            (*the identity relation*)
    1.13      "Id == {p. ? x. p = (x,x)}"