Tue, 21 Aug 2007 16:52:47 +0200 huffman simplify proof of word_of_int
Tue, 21 Aug 2007 13:30:38 +0200 haftmann improved evaluation interface
Tue, 21 Aug 2007 13:30:36 +0200 haftmann moved ordered_ab_semigroup_add to OrderedGroup.thy
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