Seshadri Constants and the geometry of surfaces

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We examine how the Seshadri constant of an ample line bundle at a very general point of an algebraic surface can carry important global geometric information about the surface. In particular, we obtain a numerical criterion for when a surface admits a dominant map to an algebraic curve.
10 pages

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Algebraic Geometry

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http://salesiana.dossiersoluciones.com/handle/123456789/66326

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/0301251
 http://arxiv.org/abs/math/0301251

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arXiv