Thu, 04 Jan 2001 10:23:01 +0100 paulson more tidying, especially to remove real_of_posnat
Thu, 04 Jan 2001 10:22:33 +0100 paulson initial material on the Reals
Wed, 03 Jan 2001 21:27:15 +0100 wenzelm updated;
Wed, 03 Jan 2001 21:25:23 +0100 wenzelm added recdef_tc(_i);
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