| Wed, 10 Jan 2018 15:25:09 +0100 | nipkow | ran isabelle update_op on all sources | file | diff | annotate |
| Mon, 30 Oct 2017 13:18:41 +0000 | haftmann | tuned some proofs and added some lemmas | file | diff | annotate |
| Wed, 30 Aug 2017 18:01:27 +0200 | Andreas Lochbihler | add type of unordered pairs | file | diff | annotate |