Thu, 06 Aug 1998 15:48:13 +0200 | paulson | even more tidying of Goal commands | changeset | files |
Thu, 06 Aug 1998 15:47:26 +0200 | paulson | A higher-level treatment of LeadsTo, minimizing use of "reachable" | changeset | files |
Thu, 06 Aug 1998 14:04:49 +0200 | nipkow | Simplified proof!! | changeset | files |