Mon, 23 Mar 2015 19:05:14 +0100 haftmann explicit commutative additive inverse operation;
Mon, 23 Mar 2015 19:05:14 +0100 haftmann modernized
Wed, 25 Mar 2015 17:51:34 +0100 blanchet more multiset theorems
Wed, 25 Mar 2015 14:39:40 +0100 wenzelm semantic completion for @{system_option};
Wed, 25 Mar 2015 13:45:52 +0100 wenzelm clarified position;
Wed, 25 Mar 2015 13:31:47 +0100 wenzelm HOL-SPARK .prv files are subject to system option spark_prv;
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