| Sat, 06 Feb 2016 12:12:57 +0100 | wenzelm | tuned proofs; | file | diff | annotate |
| Sat, 02 Jan 2016 16:32:36 +0100 | wenzelm | tuned; | file | diff | annotate |
| Sat, 26 Dec 2015 19:37:06 +0100 | wenzelm | more notation; | file | diff | annotate |
| Sat, 26 Dec 2015 19:27:46 +0100 | wenzelm | clarified sessions; | file | diff | annotate | base |