| Tue, 29 Mar 2011 23:27:38 +0200 | wenzelm | modernized specifications -- less axioms; | changeset | files |
| Tue, 29 Mar 2011 23:15:25 +0200 | wenzelm | modernized specifications -- some attempts to avoid wild axiomatizations; | changeset | files |
| Tue, 29 Mar 2011 22:36:56 +0200 | wenzelm | tuned proofs; | changeset | files |