Fri, 07 Feb 1997 17:14:33 +0100 wenzelm tuned;
Fri, 07 Feb 1997 14:15:35 +0100 nipkow Modified proofs due to added triv_forall_equality.
Fri, 07 Feb 1997 14:13:58 +0100 nipkow Modified proofs because of added "triv_forall_equality".
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