2 papers
math.RT2024
On commutative tensor factors of group algebras
Diego García-Lucas, Ángel del Río, Taro Sakurai
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.…
math.GR2023
Aritmethic lattices of $\SO(1,n)$ and units of group rings
Sheila Chagas, Ángel del Río, Pavel Zalesskii
We establish that standard arithmetic subgroups of a special orthogonal group are conjugacy separable. As an application we deduce this property for unit groups of…