Thu, 02 Feb 2006 21:59:55 +0100 wenzelm do not open structure;
Thu, 02 Feb 2006 19:57:13 +0100 huffman reimplemented using Equiv_Relations.thy
Thu, 02 Feb 2006 18:04:10 +0100 haftmann improvement in devarifications
Thu, 02 Feb 2006 18:03:35 +0100 haftmann alternative syntax for instances
Thu, 02 Feb 2006 16:37:10 +0100 wenzelm tuned;
Thu, 02 Feb 2006 16:31:38 +0100 wenzelm consumes: negative argument relative to total number of prems;
Thu, 02 Feb 2006 16:31:37 +0100 wenzelm added refine_insert;
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