%0 Journal Article %T Endotrivial modules for the Schur covers of the symmetric and alternating groups %A Caroline Lassueur %A Nadia Mazza %J Mathematics %D 2015 %I arXiv %X 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. %U http://arxiv.org/abs/1503.04562v2