Sat, 03 Sep 2011 17:32:34 +0200 haftmann assert Pure equations for theorem references; tuned
Sat, 03 Sep 2011 17:32:34 +0200 haftmann tuned specifications and proofs
Sat, 03 Sep 2011 22:11:49 +0200 wenzelm merged
Sat, 03 Sep 2011 09:26:11 -0700 huffman remove duplicate lemma finite_choice in favor of finite_set_choice
Sat, 03 Sep 2011 09:12:19 -0700 huffman simplify proof
Sat, 03 Sep 2011 08:01:49 -0700 huffman shorten some proofs
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