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arXiv 2005.10968math.ACmath.CO
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半群环中单项理想的标准对

Standard pairs for monomial ideals in semigroup rings

Laura Felicia Matusevich, Byeongsu Yu

摘要:

本文将标准对的概念推广到半群环中的单项式理想的情形。标准对可以作为一种数据结构来编码这种单项式理想,提供了一种替代生成集,非常适合计算交集,分解和多重性。我们给出了从生成集计算标准对和从生成集计算标准对的算法,并使我们的结果有效。我们假设基础半群环是正分次的,但不一定正规。缺乏正常性是这项工作中大多数挑战、微妙和创新的根源。

英文摘要:

We extend the notion of standard pairs to the context of monomial ideals in semigroup rings. Standard pairs can be used as a data structure to encode such monomial ideals, providing an alternative to generating sets that is well suited to computing intersections, decompositions, and multiplicities. We give algorithms to compute standard pairs from generating sets and vice versa and make all of our results effective. We assume that the underlying semigroup ring is positively graded, but not necessarily normal. The lack of normality is at the root of most challenges, subtleties, and innovations in this work.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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