Thu, 24 Sep 1998 15:20:03 +0200 paulson new induction rule for integers
Thu, 24 Sep 1998 11:00:07 +0200 oheimb fixed calls of ln, rm
Wed, 23 Sep 1998 12:44:30 +0200 wenzelm changed xnum token syntax;
Wed, 23 Sep 1998 10:56:08 +0200 paulson unary minus
Wed, 23 Sep 1998 10:25:37 +0200 paulson much renaming and reorganization
Wed, 23 Sep 1998 10:17:11 +0200 paulson New directory Integ for the integers
Wed, 23 Sep 1998 10:15:09 +0200 paulson a few new theorems
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