Tue, 04 Jul 2000 10:54:46 +0200 oheimb disambiguated := ; added Examples (factorial)
Tue, 04 Jul 2000 10:54:32 +0200 oheimb added BinOp
Tue, 04 Jul 2000 01:12:42 +0200 wenzelm * added 'nothing' --- the empty list of theorems;
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