| Tue, 29 Sep 2009 22:48:24 +0200 | wenzelm | modernized Balanced_Tree; | changeset | files |
| Tue, 29 Sep 2009 22:33:27 +0200 | wenzelm | replaced meta_iffD2 by existing Drule.equal_elim_rule2; | changeset | files |
| Tue, 29 Sep 2009 21:36:49 +0200 | wenzelm | tuned header; | changeset | files |