Local characters of mod-$\ell$ representations of a $p$-adic reductive group
Representation Theory
2025-10-24 v1 Number Theory
Abstract
We define the ``lifted character'' of mod- representations of -adic reductive groups where , on compact elements with pro-orders not divisible by . We generalize the local character expansion results of Howe, Harish-Chandra and DeBacker to such lifted characters. We show that the result of Moeglin-Waldspurger and Varma on degenerate Whittaker models is valid for the character expansion.
Cite
@article{arxiv.2510.20509,
title = {Local characters of mod-$\ell$ representations of a $p$-adic reductive group},
author = {Cheng-Chiang Tsai},
journal= {arXiv preprint arXiv:2510.20509},
year = {2025}
}
Comments
10 pages. Comments welcome!