English

Typical representations for $\mathrm{Sp}_4(F)$

Representation Theory 2024-06-07 v1

Abstract

Let FF be a non Archimedean local field with odd residual characteristic, and let KK be a hyperspecial maximal compact subgroup of the pp-adic symplectic group G=Sp4(F)G=\mathrm{Sp}_4(F). Let s\mathfrak{s} be an inertial class for GG in the Bernstein decomposition of the category of smooth representations of GG, which is attached to a proper Levi subgroup LL of GG. We prove that the s\mathfrak{s}-typical irreducible representations of KK are the irreducible components of IndJsK(λs)\mathrm{Ind}_{J_{\mathfrak{s}}}^{K}(\lambda_{\mathfrak{s}}), where (Js,λs)(J_{\mathfrak{s}},\lambda_{\mathfrak{s}}) is an s\mathfrak{s}-type for GG such that JsKJ_{\mathfrak{s}}\subset K, and (Js,λs)(J_{\mathfrak{s}},\lambda_{\mathfrak{s}}) is a GG-cover of a Bushnell-Kutzko maximal simple type for LL.

Keywords

Cite

@article{arxiv.2406.04196,
  title  = {Typical representations for $\mathrm{Sp}_4(F)$},
  author = {Anne-Marie Aubert and Luis Gutiérrez Frez},
  journal= {arXiv preprint arXiv:2406.04196},
  year   = {2024}
}

Comments

13 pages

R2 v1 2026-06-28T16:56:05.301Z