Thu, 10 Sep 1998 17:26:16 +0200 paulson well-formed zless_asym; tidied
Thu, 10 Sep 1998 17:25:13 +0200 paulson patch to stop failing proof
Thu, 10 Sep 1998 17:23:51 +0200 paulson New theorem wf_not_sym and well-formed wf_asym
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