Wed, 01 Apr 2009 22:29:10 +0200 cleaned up setprod_zero-related lemmas
nipkow [Wed, 01 Apr 2009 22:29:10 +0200] rev 30843
cleaned up setprod_zero-related lemmas
Wed, 01 Apr 2009 11:34:21 -0700 merged
huffman [Wed, 01 Apr 2009 11:34:21 -0700] rev 30842
merged
Wed, 01 Apr 2009 11:31:24 -0700 generalized setprod_nonneg and setprod_pos to ordered_semidom, simplified proofs
huffman [Wed, 01 Apr 2009 11:31:24 -0700] rev 30841
generalized setprod_nonneg and setprod_pos to ordered_semidom, simplified proofs
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