| Mon, 30 Jan 2017 16:10:52 +0100 | wenzelm | misc tuning and modernization; | changeset | files |
| Sun, 29 Jan 2017 17:27:02 +0100 | wenzelm | added inj_def (redundant, analogous to surj_def, bij_def); | changeset | files |
| Sun, 29 Jan 2017 13:58:03 +0100 | wenzelm | tuned proofs; | changeset | files |