2 papers
math.GR2026
Products of trees and -torsors over the punctured affine line
Andrei S. Rapinchuk, Igor A. Rapinchuk, Avinash Roy
The goal of this article is to present a computation of the Galois cohomology of the group over rings of Laurent polynomials. This computation recovers the mai…
math.AG2025
On Almost Strong Approximation in Reductive Algebraic Groups
Andrei S. Rapinchuk, Wojciech Tralle
We investigate a slight weakening of the classical property of strong approximation, which we call almost strong approximation, for connected reductive algebraic groups over global…