Wed, 11 Nov 2015 09:48:24 +0100 add various lemmas
Andreas Lochbihler [Wed, 11 Nov 2015 09:48:24 +0100] rev 61630
add various lemmas
Wed, 11 Nov 2015 09:21:56 +0100 cancel complementary terms as arguments to sup/inf in boolean algebras
Andreas Lochbihler [Wed, 11 Nov 2015 09:21:56 +0100] rev 61629
cancel complementary terms as arguments to sup/inf in boolean algebras
Wed, 11 Nov 2015 09:06:30 +0100 add lemmas about monoids and groups
Andreas Lochbihler [Wed, 11 Nov 2015 09:06:30 +0100] rev 61628
add lemmas about monoids and groups
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