Sun, 07 Mar 2010 09:21:16 -0800 huffman add simp rules about Ints, Nats
Sun, 07 Mar 2010 08:40:38 -0800 huffman add more simp rules for Ints
Sun, 07 Mar 2010 07:42:46 -0800 huffman add lemmas Nats_cases and Nats_induct
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -3 +3 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip