| Fri, 01 Dec 2017 16:58:26 +0100 | wenzelm | purge hidden nodes more thoroughly: is_hidden may become true only later; | changeset | files |
| Fri, 01 Dec 2017 15:49:01 +0100 | wenzelm | proper synchronized Map: this may be used on multiple threads; | changeset | files |
| Thu, 30 Nov 2017 17:00:19 +0100 | eberlm | bij_betw lemma for prime powers | changeset | files |