Mon, 15 Aug 2011 19:42:52 -0700 huffman merged
Mon, 15 Aug 2011 18:35:36 -0700 huffman generalize lemmas open_Collect_less, closed_Collect_le, closed_Collect_eq to class topological_space
Mon, 15 Aug 2011 16:48:05 -0700 huffman add lemma tendsto_compose
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