Wed, 10 Nov 2010 14:20:47 -0800 add lemmas lub_below, below_lub; simplify some proofs; remove some unused lemmas
huffman [Wed, 10 Nov 2010 14:20:47 -0800] rev 40500
add lemmas lub_below, below_lub; simplify some proofs; remove some unused lemmas
Wed, 10 Nov 2010 13:22:39 -0800 merged
huffman [Wed, 10 Nov 2010 13:22:39 -0800] rev 40499
merged
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