changeset 4371 | 8755cdbbf6b3 |
parent 4083 | bcff38832d89 |
child 4793 | 03fd006fb97b |
--- a/src/HOL/HOL.thy Fri Dec 05 17:16:22 1997 +0100 +++ b/src/HOL/HOL.thy Fri Dec 05 17:19:38 1997 +0100 @@ -183,6 +183,7 @@ Let_def "Let s f == f(s)" o_def "(f::'b=>'c) o g == (%(x::'a). f(g(x)))" if_def "If P x y == @z::'a. (P=True --> z=x) & (P=False --> z=y)" + arbitrary_def "False ==> arbitrary == (@x. False)" end