Thu, 14 Dec 2000 19:37:09 +0100 wenzelm use \<Sum> from main HOL;
Thu, 14 Dec 2000 19:36:48 +0100 wenzelm added Summation;
Thu, 14 Dec 2000 10:30:45 +0100 paulson many new proofs; still needs tidying
Thu, 14 Dec 2000 10:30:11 +0100 paulson new theorem real_lbound_gt_zero
Wed, 13 Dec 2000 17:46:49 +0100 wenzelm updated;
Wed, 13 Dec 2000 17:43:33 +0100 wenzelm eliminated GOAL syntax;
(0) -10000 -3000 -1000 -300 -100 -30 -10 -6 +6 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip