Fri, 07 Nov 1997 08:25:02 +0100 nipkow Each datatype t now proves a theorem split_t_case_prem
Thu, 06 Nov 1997 16:44:35 +0100 wenzelm Perl no longer optional;
Thu, 06 Nov 1997 16:41:08 +0100 wenzelm deriv: eliminated references to theory;
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