On commutative tensor factors of group algebras
arXiv:2408.09036 · doi:10.1007/s10468-026-10379-4
Abstract
We prove that any tensor product factorization with a commutative factor of a modular group algebra over a prime field comes from a direct product decomposition of the group basis. This extends previous work by Carlson and Kovács for the commutative case and answers a question of them in some cases.