在上同调度的族上

IF 0.7 4区数学 Q2 MATHEMATICS

Journal of the Korean Mathematical Society Pub Date : 2020-01-01 DOI:10.4134/JKMS.J190305

D. T. Cuong, Pham Hong Nam

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引用次数: 1

摘要

上同调度(或扩展度)由Doering, Gunston和Vasconcelos引入，作为noether环上有限生成模结构复杂性的度量。到目前为止，人们所知道的这类函数的例子很少。利用先前定义的Cohen-Macaulay阻塞，构造了一个无穷上同次族。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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ON A FAMILY OF COHOMOLOGICAL DEGREES

Cohomological degrees (or extended degrees) were introduced by Doering, Gunston and Vasconcelos as measures for the complexity of structure of finitely generated modules over a Noetherian ring. Until now only very few examples of such functions have been known. Using a Cohen-Macaulay obstruction defined earlier, we construct an infinite family of cohomological degrees.

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来源期刊

Journal of the Korean Mathematical Society 数学-数学

CiteScore

1.20

自引率

16.70%

发文量

审稿时长

6-12 weeks

期刊介绍： This journal endeavors to publish significant research of broad interests in pure and applied mathematics. One volume is published each year, and each volume consists of six issues (January, March, May, July, September, November).