Kazhdan groups with infinite outer automorphism group
Group Theory
2007-05-23 v1
Abstract
For each countable group we produce a short exact sequence where is f.g. and has a graphical presentation and is f.g. and satisfies property . As a consequence we produce a group with property such that is infinite. Using the tools developed we are also able to produce examples of nonHopfian and non-coHopfian groups with property . One of our main tools is the use of random groups to achieve certain properties.
Cite
@article{arxiv.math/0409203,
title = {Kazhdan groups with infinite outer automorphism group},
author = {Yann Ollivier and Daniel T. Wise},
journal= {arXiv preprint arXiv:math/0409203},
year = {2007}
}
Comments
18 pages