The Modular Isomorphism Problem over all fields
Rings and Algebras
2026-02-26 v2 Group Theory
Abstract
The Modular Isomorphism Problem asks, if an isomorphism between modular group algebras of finite -groups over a field implies an isomorphism of the group bases. We explore the differences of knowledge on the problem when is either assumed to be a prime field or a general field of characteristic . After revising the literature and explaining reasons for the differences, we generalize some of the positive answers to the problem from the prime field case to the general case.
Keywords
Cite
@article{arxiv.2505.05902,
title = {The Modular Isomorphism Problem over all fields},
author = {Leo Margolis and Taro Sakurai},
journal= {arXiv preprint arXiv:2505.05902},
year = {2026}
}
Comments
Improved exposition incorporating referee's comments. 16 pages