Thu, 13 Jul 2000 23:07:10 +0200 wenzelm defs (overloaded);
Thu, 13 Jul 2000 13:05:58 +0200 paulson removed now-redundant proof steps
Thu, 13 Jul 2000 13:04:48 +0200 paulson added an important default rule
Thu, 13 Jul 2000 13:02:20 +0200 paulson fixed a failing proof
Thu, 13 Jul 2000 13:00:22 +0200 paulson le_refl_iff as default rule
Thu, 13 Jul 2000 12:59:26 +0200 paulson removed needless premises
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