Rees cones and monomial rings of matroids

Rees cones and monomial rings of matroids
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拟阵的里斯锥和单项式环

DOI:
10.1016/j.laa.2008.01.035
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发表时间:
2006
影响因子:
1.1
通讯作者:
R. Villarreal
R. Villarreal
中科院分区:
数学3区
文献类型:
--
作者:
R. Villarreal

文献摘要

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使用线性代数方法,我们研究单项环和拟阵的某些代数性质。令 I 为任意域上多项式环中的单项式理想。如果 I 的里斯锥是准理想的,我们用埃尔哈特环来表达 I 的里斯代数的归一化。我们介绍了拟阵(或多拟阵)的基本里斯锥并研究了它们的面。介绍了里斯代数的一些应用。结果表明,拟阵(或多拟阵)的基单项式理想是正规的。
Using linear algebra methods we study certain algebraic properties of monomial rings and matroids. Let I be a monomial ideal in a polynomial ring over an arbitrary field. If the Rees cone of I is quasi-ideal, we express the normalization of the Rees algebra of I in terms of an Ehrhart ring. We introduce the basis Rees cone of a matroid (or a polymatroid) and study their facets. Some applications to Rees algebras are presented. It is shown that the basis monomial ideal of a matroid (or a polymatroid) is normal.