2 papers
math.OA2026
Gromov-Hausdorff Convergence of Spectral Truncations for Quantum Groups
Xintao Peng, Qin Wang
We study the quantum Gromov-Hausdorff convergence of spectral truncations for compact quantum groups. Using a proper length function, we define a Dirac operator and the associated…
math.OA2025
Asymptotic expansion for groupoids and Roe type algebras
Xulong Lu, Qin Wang, Jiawen Zhang
In this paper, we introduce a notion of expansion for groupoids, which recovers the classical notion of expander graphs by a family of pair groupoids and expanding actions in measu…