Wed, 06 Dec 2023 11:08:39 +0100 blanchet don't freeze terms in Sledgehammer, as this has a bad impact on 'using' facts
Wed, 06 Dec 2023 12:06:29 +0100 nipkow tuned T functions: now 0 if not recursive
Tue, 05 Dec 2023 22:04:01 +0100 wenzelm minor performance tuning;
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -3 +3 +10 +30 +100 +300 +1000 tip