Realization of permutation modules via Alexandroff spaces
Algebraic Topology
2024-02-14 v3 Combinatorics
Group Theory
Representation Theory
Abstract
We raise the question of the realizability of permutation modules in the context of Kahn's realizability problem for abstract groups and the -Moore space problem. Specifically, given a finite group , we consider a collection of finitely generated -modules that admit a submodule decomposition on which acts by permuting the summands. Then we prove the existence of connected finite spaces that realize each as its -th homology, as its group of self-homotopy equivalences , and the action of on each as the action of on .
Cite
@article{arxiv.2308.16675,
title = {Realization of permutation modules via Alexandroff spaces},
author = {Cristina Costoya and Rafael Gomes and Antonio Viruel},
journal= {arXiv preprint arXiv:2308.16675},
year = {2024}
}
Comments
14 pages, 3 figures, v3: first author's affiliation modified; grant for the second author added