Sun, 25 Feb 2018 12:54:55 +0000 | paulson | new material on matrices, etc., and consolidating duplicate results about of_nat | changeset | files |
Sun, 25 Feb 2018 12:59:08 +0100 | wenzelm | notation for dummy sort; | changeset | files |
Sat, 24 Feb 2018 17:21:35 +0100 | wenzelm | more symbols; | changeset | files |