| Tue, 02 Aug 2011 15:27:37 +0000 | urbanc | a version of the proof which dispenses with the notion of string-subtraction | changeset | files |
| Sun, 31 Jul 2011 10:27:41 +0000 | urbanc | some experiments with the proofs in Myhill_2 | changeset | files |
| Thu, 28 Jul 2011 17:52:36 +0000 | urbanc | added a picture | changeset | files |