src/ZF/arith.thy
Tue, 05 Oct 1993 15:21:29 +0100 lcp ordinal: DEFINITION of < and le to replace : and <= on ordinals! Many
Fri, 17 Sep 1993 16:16:38 +0200 lcp Installation of new simplifier for ZF. Deleted all congruence rules not
Thu, 16 Sep 1993 12:20:38 +0200 clasohm Initial revision
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