Vertex cover algebras of unimodular hypergraphs

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It is proved that all vertex cover algebras of a hypergraph are standard graded if and only if the hypergraph is unimodular. This has interesting consequences on the symbolic powers of monomial ideals.
6 pages

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Commutative Algebra, Combinatorics, 13D02, 05C65

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http://salesiana.dossiersoluciones.com/handle/123456789/126039

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/0703577
 http://arxiv.org/abs/math/0703577

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arXiv