English

On the Twisted Group Ring Isomorphism Problem for a class of groups

Group Theory 2024-08-08 v1 Representation Theory

Abstract

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 the associated quotients. As an application of these results, we provide several examples. Finally, we answer the TGRIP for extra-special p-groups, and for the groups of order p5p^5, where p5p \geq 5 is a prime, except a list of five groups.

Keywords

Cite

@article{arxiv.2408.03666,
  title  = {On the Twisted Group Ring Isomorphism Problem for a class of groups},
  author = {Sumana Hatui and Gurleen Kaur and Sahanawaj Sabnam},
  journal= {arXiv preprint arXiv:2408.03666},
  year   = {2024}
}

Comments

24 pages

R2 v1 2026-06-28T18:06:16.273Z