English

Hecke algebras for tame supercuspidal types

Representation Theory 2021-01-07 v1 Number Theory

Abstract

Let FF be a non-archimedean local field of residue characteristic p2p\neq 2. Let GG be a connected reductive group over FF that splits over a tamely ramified extension of FF. Yu constructed types which are called tame supercuspidal types and conjectured that Hecke algebras associated with these types are isomorphic to Hecke algebras associated with depth-zero types of some twisted Levi subgroups of GG. In this paper, we prove this conjecture. We also prove that the Hecke algebra associated with a regular supercuspidal type is isomorphic to the group algebra of a certain abelian group.

Keywords

Cite

@article{arxiv.2101.01873,
  title  = {Hecke algebras for tame supercuspidal types},
  author = {Kazuma Ohara},
  journal= {arXiv preprint arXiv:2101.01873},
  year   = {2021}
}
R2 v1 2026-06-23T21:49:33.045Z