Mon, 08 Aug 2011 10:26:26 -0700 huffman standard theorem naming scheme: complex_eqI, complex_eq_iff
Mon, 08 Aug 2011 09:52:09 -0700 huffman moved division ring stuff from Rings.thy to Fields.thy
Mon, 08 Aug 2011 08:55:49 -0700 huffman Library/Product_ord: wellorder instance for products
Mon, 08 Aug 2011 21:11:10 +0200 wenzelm modernized file proof_checker.ML;
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