Tue, 27 Mar 2012 11:02:18 +0200 tuned proofs
huffman [Tue, 27 Mar 2012 11:02:18 +0200] rev 47138
tuned proofs
Tue, 27 Mar 2012 10:34:12 +0200 shorten a proof
huffman [Tue, 27 Mar 2012 10:34:12 +0200] rev 47137
shorten a proof
Tue, 27 Mar 2012 10:20:31 +0200 simplify some proofs
huffman [Tue, 27 Mar 2012 10:20:31 +0200] rev 47136
simplify some proofs
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