Tue, 09 Dec 2008 15:31:38 -0800 huffman move lemmas from Numeral_Type.thy to other theories
Tue, 09 Dec 2008 12:53:25 -0800 huffman instantiation option :: (enum) enum
Tue, 09 Dec 2008 11:49:12 -0800 huffman instance inat :: semiring_char_0
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