Wed, 21 Feb 2018 12:57:49 +0000 paulson Lots of new material about matrices, etc.
Tue, 20 Feb 2018 22:25:23 +0100 wenzelm tuned proofs -- prefer explicit names for facts from 'interpret';
Tue, 20 Feb 2018 22:04:04 +0100 wenzelm merged
Tue, 20 Feb 2018 16:29:37 +0100 wenzelm eliminated questionable Par_List.map -- locale interpretation is mostly lazy (see also b81f1de9f57e);
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