| Wed, 06 May 2020 10:46:19 +0200 | nipkow | tuned | file | diff | annotate |
| Tue, 28 Apr 2020 18:34:59 +0200 | nipkow | use abs(h l - h r) instead of 3 cases, tuned proofs | file | diff | annotate |
| Wed, 01 Apr 2020 21:48:39 +0200 | nipkow | simplified code and proofs | 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 |
| Wed, 13 Jun 2018 15:24:20 +0200 | nipkow | qualify interpretations to avoid clashes | file | diff | annotate |
| Tue, 12 Jun 2018 17:18:40 +0200 | nipkow | more abstract naming | file | diff | annotate |
| Tue, 12 Jun 2018 07:18:09 +0200 | nipkow | proved avl for map (finally); tuned | file | diff | annotate |