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arXiv 1111.1433math.AC
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关于某些半群环的贝蒂数

On the Betti numbers of some semigroup rings

Vincenzo Micale, Anda Olteanu

摘要:

对于任何数值半群$S$,存在无穷多个数值对称半群$T$使得$S=\frac{T}{2}$是它们的一半。研究了当$S$是3-生成数值半群或伸缩的数值半群环$K[T]$的贝蒂数.我们还考虑了4-生成对称半群和所谓的4-不可约数值半群。

英文摘要:

For any numerical semigroup $S$, there are infinitely many numerical symmetric semigroups $T$ such that $S=\frac{T}{2}$ is their half. We are studying the Betti numbers of the numerical semigroup ring $K[T]$ when $S$ is a 3-generated numerical semigroup or telescopic. We also consider 4-generated symmetric semigroups and the so called 4-irreducible numerical semigroups.

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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