Multiplicities under basechange: finite field case
Representation Theory
2020-03-24 v2 Number Theory
Abstract
A general proposition is proved relating multiplicities (of restriction of a representation of a group to a subgroup) under basechange, and used to calculate some multiplicities for cuspidal representations which become principal series representations under basechange for which multiplicities can be calculated by geometric methods.
Cite
@article{arxiv.1909.01850,
title = {Multiplicities under basechange: finite field case},
author = {Dipendra Prasad},
journal= {arXiv preprint arXiv:1909.01850},
year = {2020}
}
Comments
Slightly revised version