Integral $Ext^2$ between hook Weyl modules
Representation Theory
2021-06-17 v1
Abstract
This paper concerns representations of the integral general linear group. The extension groups between any pair of hook Weyl modules are determined via a detailed study of cyclic generators and relations associated to certain extensions. As a corollary, the modular extension groups between such modules are determined.
Keywords
Cite
@article{arxiv.2006.03640,
title = {Integral $Ext^2$ between hook Weyl modules},
author = {Dimitra-Dionysia Stergiopoulou},
journal= {arXiv preprint arXiv:2006.03640},
year = {2021}
}
Comments
22 pages