Topological models of finite type for tree almost automorphism groups

Roman Sauer, Werner Thumann

Published 2015-10-19Version 1

We show that tree almost automorphism groups, including Neretin groups, satisfy the analogue of the $F_\infty$-finiteness condition in the world of totally disconnected groups: They possess a cellular action on a contractible cellular complex such that the stabilizers are open and compact and the restriction of the action on each $n$-skeleton is cocompact.