| Thu, 13 Apr 1995 14:15:36 +0200 | lcp | Deleted subset_imp_Un_Diff_eq, as it is identical to | changeset | files |
| Thu, 13 Apr 1995 11:44:37 +0200 | lcp | New root file | changeset | files |
| Thu, 13 Apr 1995 11:43:01 +0200 | lcp | Redefined OUnion in a definitional manner | changeset | files |
| Thu, 13 Apr 1995 11:41:34 +0200 | lcp | Redefined OUnion in a definitional manner, and proved the | changeset | files |