| Sun, 18 Oct 2009 00:52:10 +0200 | Christian Urban | the command "quotient" can now define more than one quotient at the same time; quotients need to be separated by and | file | diff | annotate |
| Sat, 17 Oct 2009 16:06:54 +0200 | Cezary Kaliszyk | Partial simplification of the proof | file | diff | annotate |