Tue, 13 Jul 1999 10:44:45 +0200 paulson renamed inj_nat to inj_int
Tue, 13 Jul 1999 10:44:13 +0200 paulson new monotonicity theorems
Tue, 13 Jul 1999 10:43:31 +0200 paulson new theorem zmult_eq_0_iff
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