Integral closures of monomial ideals and Fulkersonian hypergraphs

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We prove that the integral closures of the powers of a squarefree monomial ideal I equal the symbolic powers if and only if I is the edge ideal of a Fulkersonian hypergraph.
5 pages

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Commutative Algebra, Combinatorics, 13B22; 05C65

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http://salesiana.dossiersoluciones.com/handle/123456789/116568

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/0609525
 http://arxiv.org/abs/math/0609525

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arXiv