| Wed, 24 Mar 2010 13:54:20 +0100 | Cezary Kaliszyk | Started proving strong induction. | file | diff | annotate |
| Wed, 24 Mar 2010 12:36:58 +0100 | Cezary Kaliszyk | stating the strong induction; further. | file | diff | annotate |
| Wed, 24 Mar 2010 12:05:38 +0100 | Cezary Kaliszyk | Working on stating induct. | file | diff | annotate |