Multigraded regularity and the Koszul property

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We give a criterion for the section ring of an ample line bundle to be Koszul in terms of multigraded regularity. We discuss an application to polytopal semigroup rings.
8 pages

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Algebraic Geometry, Commutative Algebra, Combinatorics, 14C20; 13F20; 52B20; 16S37

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http://salesiana.dossiersoluciones.com/handle/123456789/144225

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0712.2251
 http://arxiv.org/abs/0712.2251

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arXiv