| Thu, 07 Oct 1993 10:20:30 +0100 | lcp | added ~= for "not equals" and added ~: for "not in" | file | diff | annotate |
| Wed, 22 Sep 1993 15:43:05 +0200 | lcp | Added weak congruence rules to HOL: if_weak_cong, case_weak_cong, | file | diff | annotate |
| Thu, 16 Sep 1993 12:21:07 +0200 | clasohm | Initial revision | file | diff | annotate |