| Fri, 18 Sep 2020 12:33:10 +0200 | nipkow | tuned | file | diff | annotate |
| Tue, 15 Sep 2020 08:57:47 +0200 | nipkow | added lemma | file | diff | annotate |
| Wed, 25 Sep 2019 17:22:57 +0200 | nipkow | replaced new type ('a,'b) tree by old type ('a*'b) tree. | file | diff | annotate |
| Mon, 16 Sep 2019 18:00:27 +0200 | nipkow | tuned | file | diff | annotate |
| Tue, 20 Aug 2019 12:19:23 +0200 | nipkow | tuned | file | diff | annotate |
| Tue, 20 Aug 2019 09:26:22 +0200 | nipkow | tuned | file | diff | annotate |
| Mon, 12 Aug 2019 15:57:40 +0200 | nipkow | simplified defs (thanks to Mohammad) | file | diff | annotate |