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arxiv: 0712.2251 · v1 · submitted 2007-12-14 · 🧮 math.AG · math.AC· math.CO

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.

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