| Sun, 13 Feb 2011 10:36:53 +0000 | zhang | More into the second direction | file | diff | annotate |
| Tue, 08 Feb 2011 12:01:28 +0000 | zhang | More explaination on equational system | file | diff | annotate |
| Mon, 07 Feb 2011 13:08:09 +0000 | zhang | More into first direction | file | diff | annotate |
| Sun, 06 Feb 2011 10:28:29 +0000 | zhang | A formal presentation of automaton and Myhill-Nerrode theorem added to serve as a basis for further discussion | file | diff | annotate |