Thu, 15 Sep 2016 14:33:55 +0100 paulson Merge
Thu, 15 Sep 2016 14:14:49 +0100 paulson simple new lemmas, mostly about sets
Thu, 15 Sep 2016 10:40:10 +0200 hoelzl add add_eq_0_iff_both_eq_0 and zero_eq_add_iff_both_eq_0 to simp set
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