| Wed, 21 Apr 2010 21:29:09 +0200 | Christian Urban | moved some lemmas into the right places | file | diff | annotate |
| Wed, 21 Apr 2010 16:24:18 +0200 | Christian Urban | added a variant of the induction principle for permutations | file | diff | annotate |
| Wed, 21 Apr 2010 12:37:19 +0200 | Christian Urban | added an improved version of the induction principle for permutations | file | diff | annotate |