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Thu, 25 Aug 2011 11:57:42 -0700
simplify many proofs about subspace and span;
changeset
huffman [Thu, 25 Aug 2011 11:57:42 -0700] rev 44521
simplify many proofs about subspace and span; reorder premises in rule span_induct;
Thu, 25 Aug 2011 11:56:20 -0700
remove duplicate simp declaration
changeset
huffman [Thu, 25 Aug 2011 11:56:20 -0700] rev 44520
remove duplicate simp declaration
Thu, 25 Aug 2011 09:17:02 -0700
simplify definition of 'interior';
changeset
huffman [Thu, 25 Aug 2011 09:17:02 -0700] rev 44519
simplify definition of 'interior'; add lemmas interiorI and interiorE; change lemmas interior_unique and closure_unique to rule_format; tidy some proofs;
Wed, 24 Aug 2011 16:08:21 -0700
add lemma closure_union;
changeset
huffman [Wed, 24 Aug 2011 16:08:21 -0700] rev 44518
add lemma closure_union; simplify some proofs;
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