Fri, 09 Oct 1998 11:15:39 +0200 nipkow added Induct/Multiset*
Fri, 09 Oct 1998 11:15:07 +0200 nipkow New inductive definition of `card'
Fri, 09 Oct 1998 11:10:59 +0200 paulson polymorphic versions of nat_neq_iff and nat_neqE
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