| Fri, 04 Jul 2014 20:18:47 +0200 | haftmann | reduced name variants for assoc and commute on plus and mult | file | diff | annotate |
| Sat, 22 Mar 2014 08:37:43 +0100 | haftmann | generalized and strengthened cong rules on compound operators, similar to 1ed737a98198 | file | diff | annotate |
| Tue, 09 Jul 2013 18:08:56 +0200 | wenzelm | tuned proofs; | file | diff | annotate |