Sun, 22 Feb 2009 18:16:32 +0100 | haftmann | handle NONE case in arity function properly | changeset | files |
Sun, 22 Feb 2009 18:02:21 +0100 | haftmann | clarified status of variables in evaluation terms; tuned header | changeset | files |
Sun, 22 Feb 2009 18:00:05 +0100 | haftmann | subalgebra: drop arities if desired | changeset | files |