Contractible classes in toric varieties
| dc.creator | Casagrande, Cinzia | |
| dc.date | 2001-11-30 | |
| dc.date | 2002-05-08 | |
| dc.date.accessioned | 2026-07-07T04:44:55Z | |
| dc.date.available | 2026-07-07T04:44:55Z | |
| dc.description | Let X be a smooth, complete, toric variety. We study those curves C in X that are contractible, in the sense that there exists an equivariant morphism with connected fibers, with source X, that contracts exactly the irreducible curves that are numerically equivalent to a multiple of C. When X is projective, we compare contractible and extremal curves, and we show that every curve in X is numerically equivalent to a linear combination with positive integral coefficients of contractible curves. | |
| dc.description | LaTeX, 27 pages, 5 figures; revised version, to appear in Mathematische Zeitschrift | |
| dc.identifier | https://arxiv.org/abs/math/0111332 | |
| dc.identifier | http://arxiv.org/abs/math/0111332 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/62784 | |
| dc.subject | Algebraic Geometry | |
| dc.title | Contractible classes in toric varieties | |
| dc.type | text |