| Sun, 13 Sep 2015 22:56:52 +0200 | wenzelm | tuned proofs -- less legacy; | file | diff | annotate |
| Thu, 25 Jun 2015 23:33:47 +0200 | wenzelm | tuned proofs; | file | diff | annotate |
| Tue, 14 Apr 2015 14:13:06 +0200 | Andreas Lochbihler | generalise lemmas; | file | diff | annotate |