Thu, 24 Jul 1997 10:46:32 +0200 paulson set_of_list -> set
Wed, 23 Jul 1997 17:44:15 +0200 nipkow Simplified a few proofs because of improved simplification.
(0) -3000 -1000 -300 -100 -30 -10 -2 +2 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip