Effective nonvanishing, effective global generation

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We prove a multiple-points higher-jets nonvanishing theorem by the use of local Seshadri constants. Applications are given to effectivity problems such as constructing rational and birational maps into Grassmannians, and the global generation of vector bundles.
LaTex (article) 13 pages; revised: one section added; to appear in Ann. Inst. Fourier

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Algebraic Geometry

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http://salesiana.dossiersoluciones.com/handle/123456789/148440

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/alg-geom/9708004
 http://arxiv.org/abs/alg-geom/9708004

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arXiv