Sun, 25 Feb 2018 15:44:46 +0100 wenzelm eliminated ASCII syntax from Pure bootstrap;
Sun, 25 Feb 2018 12:55:07 +0000 paulson merged
Sun, 25 Feb 2018 12:54:55 +0000 paulson new material on matrices, etc., and consolidating duplicate results about of_nat
Sun, 25 Feb 2018 12:59:08 +0100 wenzelm notation for dummy sort;
Sat, 24 Feb 2018 17:21:35 +0100 wenzelm more symbols;
Fri, 23 Feb 2018 21:46:30 +0100 wenzelm merged
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