collaborators

2 papers

math.NT2026

Expansion in and Zaremba's conjecture

Xin Zhang

We establish an expansion theory for . Incorporating this into a framework recently developed by Shkredov, we confirm Zaremba's conjecture.

math.GR2026

Super approximation for and

Jincheng Tang, Xin Zhang

Let or be finite symmetric and assume generates a group which is…