| Tue, 26 Jan 2010 12:06:47 +0100 | Cezary Kaliszyk | Sigma cleaning works with split_prs (still manual proof). | file | diff | annotate |
| Sun, 24 Jan 2010 23:41:27 +0100 | Christian Urban | test with splits | file | diff | annotate |
| Fri, 22 Jan 2010 17:44:46 +0100 | Cezary Kaliszyk | Proper alpha equivalence for Sigma calculus. | file | diff | annotate |
| Thu, 21 Jan 2010 12:50:43 +0100 | Cezary Kaliszyk | Lifted Peter's Sigma lemma with Ex1. | file | diff | annotate |