On non-liftable Calabi-Yau threefolds
| dc.creator | Ekedahl, Torsten | |
| dc.date | 2003-06-30 | |
| dc.date | 2004-05-26 | |
| dc.date.accessioned | 2026-07-07T04:59:18Z | |
| dc.date.available | 2026-07-07T04:59:18Z | |
| dc.description | Only two ways to construct non-liftable Calabi-Yau threefolds are currently known, one example by Hirokado and one method of Schröer. This article computes some cohomological invariants of these examples of non-liftable Calabi-Yau threefolds, in particular it computes their mini-versal deformations. One conclusion is that their mixed characteristic mini-versal deformation spaces are actually smooth over the characteristic $p$ base field. Furthermore, a new family, constructed in the spirit of Schröer, is introduced and the same calculations are performed for it. | |
| dc.description | 31 pages. An improper use of a result of Deligne and Illusie has been replaced with a proper one. Also some other minor corrections | |
| dc.identifier | https://arxiv.org/abs/math/0306435 | |
| dc.identifier | http://arxiv.org/abs/math/0306435 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/67931 | |
| dc.subject | Algebraic Geometry | |
| dc.subject | 14J32 (Primary), 14B12 (Secondary), 14J28 (Secondary), 14F40(Secondary) | |
| dc.title | On non-liftable Calabi-Yau threefolds | |
| dc.type | text |