| Mon, 12 Oct 2009 14:30:50 +0200 | Christian Urban | started some strange functions | file | diff | annotate |
| Mon, 12 Oct 2009 13:58:31 +0200 | Cezary Kaliszyk | Further with the manual proof | file | diff | annotate |
| Fri, 09 Oct 2009 17:05:45 +0200 | Cezary Kaliszyk | Further experiments with proving induction manually | file | diff | annotate |