2 papers
math.DS2026
Ample groupoids that are neither almost finite nor purely infinite
Xiaolei Wu, Mengfei Zhao, Xin Ma
We study a question of Matui and varations of it on minimal ample groupoids that are neither almost finite nor purely infinite. We first observe that there are already effective mi…
math.GR2025
Embedding groups into boundedly acyclic groups
Fan Wu, Xiaolei Wu, Mengfei Zhao +1
We show that the \sÏ-labeled Thompson groups and the twisted Brin--Thompson groups are boundedly acyclic. This allows us to prove several new embedding results for groups. First,…