| Wed, 15 Dec 2010 11:26:28 +0100 | blanchet | remove at most one double negation -- any other double negations are part of some higher-order reasoning and should be left alone, cf. "HO_Reas.thy" | changeset | files |
| Wed, 15 Dec 2010 11:26:28 +0100 | blanchet | weaken the "expect" flag so that it doesn't trigger errors if a prover is not installed | changeset | files |