单项式曲线的强健简并复合体

IF 0.6 3区 数学 Q3 MATHEMATICS
Dimitra Kosta, Apostolos Thoma, Marius Vladoiu
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引用次数: 0

摘要

对于每一个简单环理想 \(I_T\) ,我们都可以联想到强稳健简单复数 \(\Delta_T\),它决定了所有以 \(I_T\) 作为花束理想的理想的强稳健性质。我们证明,对于 \(\mathbb {A}^{s}\) 中的单项式曲线的简单环形理想,强稳健简单复数 \(\Delta _T\) 要么是 \(\{emptyset \}\) 要么包含恰好一个 0 维面。在 \(\mathbb {A}^{3}\) 中的单项式曲线的情况下,当且仅当环形理想 \(I_T\) 是一个具有两个贝蒂度的完全交集理想时,强健单纯形复数 \(\Delta _T\) 才包含一个 0 维面。最后,我们提供了一种构造来产生无限多的强健理想,它们的花束理想都是单项式曲线的理想,并证明它们都是这样产生的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The strongly robust simplicial complex of monomial curves

To every simple toric ideal \(I_T\) one can associate the strongly robust simplicial complex \(\Delta _T\), which determines the strongly robust property for all ideals that have \(I_T\) as their bouquet ideal. We show that for the simple toric ideals of monomial curves in \(\mathbb {A}^{s}\), the strongly robust simplicial complex \(\Delta _T\) is either \(\{\emptyset \}\) or contains exactly one 0-dimensional face. In the case of monomial curves in \(\mathbb {A}^{3}\), the strongly robust simplicial complex \(\Delta _T\) contains one 0-dimensional face if and only if the toric ideal \(I_T\) is a complete intersection ideal with exactly two Betti degrees. Finally, we provide a construction to produce infinitely many strongly robust ideals with bouquet ideal the ideal of a monomial curve and show that they are all produced this way.

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来源期刊
CiteScore
1.50
自引率
12.50%
发文量
94
审稿时长
6-12 weeks
期刊介绍: The Journal of Algebraic Combinatorics provides a single forum for papers on algebraic combinatorics which, at present, are distributed throughout a number of journals. Within the last decade or so, algebraic combinatorics has evolved into a mature, established and identifiable area of mathematics. Research contributions in the field are increasingly seen to have substantial links with other areas of mathematics. The journal publishes papers in which combinatorics and algebra interact in a significant and interesting fashion. This interaction might occur through the study of combinatorial structures using algebraic methods, or the application of combinatorial methods to algebraic problems.
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