arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1802.04571math.COmath.GR
收藏

阿贝尔群上可分解Schur环的$CI$ -性质

$CI$-property for decomposable Schur rings over an abelian group

István Kovács, Grigory Ryabov

摘要:

有限群上的Schur环称为可分解的,如果它是更小群上Schur环的广义圈积。本文建立了初等阿贝尔群直积上的可分解Schur环是$CI$ -Schur环的一个充分条件。利用这一条件,我们用较短的方法重新证明了秩至多为$5$的初等阿贝尔群上可分解Schur环的$CI$ -性质的已知结果.

英文摘要:

A Schur ring over a finite group is said to be decomposable if it is the generalized wreath product of Schur rings over smaller groups. In this paper we establish a sufficient condition for a decomposable Schur ring over the direct product of elementary abelian groups to be a $CI$-Schur ring. By using this condition we reprove in a short way known results on the $CI$-property for decomposable Schur rings over an elementary abelian group of rank at most $5$.

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。

↑