Endotrivial modules for the Schur covers of the symmetric and alternating groups
arXiv:1503.04562
Abstract
We investigate the endotrivial modules for the Schur covers of the symmetric and alternating groups and determine the structure of their group of endotrivial modules in all characteristics. We provide a full description of this group by generators and relations in all cases.
changes from (v21): corrected minor typos, added references