On Nielsen realization and manifold models for classifying spaces
Geometric Topology
2024-01-29 v4
Abstract
We consider the problem of whether, for a given virtually torsionfree discrete group , there exists a cocompact proper topological -manifold, which is equivariantly homotopy equivalent to the classifying space for proper actions. This problem is related to Nielsen Realization. We will make the assumption that the expected manifold model has a zero-dimensional singular set. Then we solve the problem in the case, for instance, that contains a normal torsionfree subgroup such that is hyperbolic and is the fundamental group of an aspherical closed manifold of dimension greater or equal to five and is a finite cyclic group of odd order.
Keywords
Cite
@article{arxiv.2303.15765,
title = {On Nielsen realization and manifold models for classifying spaces},
author = {James F. Davis and Wolfgang Lueck},
journal= {arXiv preprint arXiv:2303.15765},
year = {2024}
}
Comments
41 pages. The final, final version, to appear in the Transactions of the American Mathematical Society