| 2010-05-29 | Christian Urban | added example from Tobias and changed the title | file | diff | annotate |
| 2010-05-27 | Christian Urban | updated to new Isabelle | file | diff | annotate |
| 2010-05-24 | Christian Urban | added phi for morphisms | file | diff | annotate |
| 2010-05-17 | Christian Urban | updated to new Isabelle | file | diff | annotate |
| 2010-05-17 | Christian Urban | updated to new isabelle | file | diff | annotate |
| 2010-04-26 | Christian Urban | updated to new Isabelle | file | diff | annotate |
| 2010-04-24 | Christian Urban | added a section to the introduction; described @{make_string} | file | diff | annotate |