关于一类群的扭曲群环同构问题

Pub Date : 2024-10-11 DOI:10.1016/j.jalgebra.2024.08.036
Sumana Hatui , Gurleen Kaur , Sahanawaj Sabnam
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引用次数: 0

摘要

扭曲群环同构问题(TGRIP)是经典群环同构问题的一个变种。它询问扭曲群环的环结构是否决定了群的同构。本文研究了群的直积和中心积的 TGRIP 问题。通过回答某些相关商的 TGRIP,我们提供了一些回答群的 TGRIP 的标准。作为这些结果的应用,我们提供了几个例子。最后,我们回答了特殊 p 群的 TGRIP,以及除五个 p5 阶群(其中 p≥5 是素数)之外的所有群的 TGRIP。
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On the twisted group ring isomorphism problem for a class of groups
The twisted group ring isomorphism problem (TGRIP) is a variation of the classical group ring isomorphism problem. It asks whether the ring structure of the twisted group ring determines the group up to isomorphism. In this article, we study the TGRIP for direct product and central product of groups. We provide some criteria to answer the TGRIP for groups by answering the TGRIP for certain associated quotients. As an application of these results, we provide several examples. Finally, we answer the TGRIP for extra-special p-groups, and for all but five groups of order p5, where p5 is prime.
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