Tue, 08 May 2007 04:55:19 +0200 huffman add lemma abs_norm_cancel
Tue, 08 May 2007 03:03:23 +0200 huffman cleaned up
Tue, 08 May 2007 01:40:30 +0200 urbanc polished some proofs
Tue, 08 May 2007 01:10:55 +0200 huffman add lemmas power2_le_imp_le and power2_less_imp_less
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