| Thu, 27 Sep 2001 15:41:48 +0200 | wenzelm | derive tertium-non-datur by means of Hilbert's choice operator; | changeset | files |
| Thu, 27 Sep 2001 14:35:40 +0200 | wenzelm | obsolete; | changeset | files |
| Thu, 27 Sep 2001 12:25:09 +0200 | wenzelm | updated; | changeset | files |