| Wed, 25 Jul 2001 17:58:26 +0200 | paulson | Hilbert restructuring: Wellfounded_Relations no longer needs Hilbert_Choice | changeset | files |
| Wed, 25 Jul 2001 13:44:32 +0200 | paulson | partial restructuring to reduce dependence on Axiom of Choice | changeset | files |
| Wed, 25 Jul 2001 13:33:08 +0200 | paulson | removed reference to Ex_def | changeset | files |