2 papers
math.GR2025
Small cancellation and outer automorphisms of Kazhdan groups acting on hyperbolic spaces
I. Chifan, A. Ioana, D. Osin +1
We show that every finite group realizes as the outer automorphism group of an ICC hyperbolic group with Kazhdan property (T). This result complements the well-known theorem of Pau…
math.OA2025
Wreath-like products of groups and their von Neumann algebras II: Outer automorphisms
I. Chifan, A. Ioana, D. Osin +1
Given a countable group , let denote its von Neumann algebra. For a wide class of ICC groups with Kazhdan's property (T), we confirm a conjecture of V.F.R. Jones as…