Linear source invertible bimodules and Green correspondence
Representation Theory
2020-04-22 v1
Abstract
We show that the Green correspondence induces an injective group homomorphism from the linear source Picard group of a block of a finite group algebra to the linear source Picard group , where is the Brauer correspondent of . This homomorphism maps the trivial source Picard group to the trivial source Picard group . We show further that the endopermutation source Picard group is bounded in terms of the defect groups of and that when has a normal defect group . Finally we prove that the rank of any invertible -bimodule is bounded by that of .
Cite
@article{arxiv.2004.10131,
title = {Linear source invertible bimodules and Green correspondence},
author = {Markus Linckelmann and Michael Livesey},
journal= {arXiv preprint arXiv:2004.10131},
year = {2020}
}