Wed, 06 Jun 2007 19:12:07 +0200 nipkow tuned list comprehension, changed filter syntax from : to <-
Wed, 06 Jun 2007 18:32:05 +0200 huffman clean up proofs of exp_zero, sin_zero, cos_zero
Wed, 06 Jun 2007 17:01:33 +0200 huffman generalize class constraints on some lemmas
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