Fri, 02 Sep 2011 15:19:59 -0700 huffman simplify proof of Rats_dense_in_real;
Fri, 02 Sep 2011 14:27:55 -0700 huffman remove unused, unnecessary lemmas
Fri, 02 Sep 2011 13:57:12 -0700 huffman remove more duplicate lemmas
Fri, 02 Sep 2011 23:04:12 +0200 wenzelm merged
Fri, 02 Sep 2011 19:29:48 +0200 haftmann merged
Fri, 02 Sep 2011 19:29:36 +0200 haftmann avoid "Code" as structure name
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