Non-annulation effective et positivité locale des fibrés en droites amples adjoints
| dc.creator | Broustet, Amaël | |
| dc.date | 2007-07-27 | |
| dc.date | 2007-10-15 | |
| dc.date.accessioned | 2026-07-07T08:35:53Z | |
| dc.date.available | 2026-07-07T08:35:53Z | |
| dc.description | We prove that Seshadri constants of some ample divisors are bigger than 1 on smooth threefolds whose anticanonical bundle is nef or on Fano varieties of small coindice. The main tools are (some known cases of) the Kawamata's effective non-vanishing conjecture and the adjunction theory. We prove the non-vanishing conjecture in dimension 3 in the case of line bundles of "high" volume using Kawamata's subadjunction formula. | |
| dc.description | 22 pages, in french, typos corrected | |
| dc.identifier | https://arxiv.org/abs/0707.4140 | |
| dc.identifier | http://arxiv.org/abs/0707.4140 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/139888 | |
| dc.subject | Algebraic Geometry | |
| dc.subject | 14E30, 14J30, 14J40, 14J45 | |
| dc.title | Non-annulation effective et positivité locale des fibrés en droites amples adjoints | |
| dc.type | text |