Mon, 19 Jul 1999 15:29:30 +0200 paulson new theorem zless_zero_nat
Mon, 19 Jul 1999 15:29:01 +0200 paulson removal of rewrites for Suc(Suc(Suc...)))
Mon, 19 Jul 1999 15:27:34 +0200 paulson NatBin: binary arithmetic for the naturals
Mon, 19 Jul 1999 15:24:35 +0200 paulson getting rid of qed_goal
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