Quasidiagonality of Kazhdan Groups
Operator Algebras
2025-10-23 v2 Group Theory
Abstract
It is shown that infinite, discrete, Kazhdan property (T) groups never have the {\it finite-dimensional density} (FDD) property. This answers a conjecture of Lubotzky and Shalom affirmatively.
Cite
@article{arxiv.2510.17003,
title = {Quasidiagonality of Kazhdan Groups},
author = {Mehdi Moradi},
journal= {arXiv preprint arXiv:2510.17003},
year = {2025}
}
Comments
There is a serious gap in the proof of Theorem 3.2