| Sat, 09 Jan 2010 08:52:06 +0100 | Christian Urban | removed obsolete equiv_relation and rnamed new_equiv_relation | file | diff | annotate |
| Fri, 08 Jan 2010 10:08:01 +0100 | Cezary Kaliszyk | Proved concat_empty. | file | diff | annotate |
| Thu, 07 Jan 2010 16:51:38 +0100 | Cezary Kaliszyk | Replacing equivp by reflp in the assumptions leads to non-provable subgoals in the gen_pre lemmas. | file | diff | annotate |