Thu, 22 Aug 2019 09:40:48 +0100 | Chengsong | counterexample finder | changeset | files |
Thu, 22 Aug 2019 01:11:07 +0200 | Christian Urban | updated with the proof of bder | changeset | files |
Wed, 21 Aug 2019 10:29:34 +0200 | Christian Urban | added some lemmas about the counter example. | changeset | files |