Explicit local Jacquet-Langlands correspondence: the non-dyadic wild case

TL;DR

This paper provides a clear parametrization of certain cuspidal representations of inner forms of GL_n over non-Archimedean fields, demonstrating how the Jacquet-Langlands correspondence preserves this parametrization in the non-dyadic wild case.

Contribution

It introduces a transparent parametrization of totally ramified cuspidal representations of inner forms of GL_n and shows its compatibility with the Jacquet-Langlands correspondence.

Findings

Parametrization of totally ramified cuspidal representations

Compatibility of parametrization with Jacquet-Langlands correspondence

Unified formula for the correspondence in the non-dyadic wild case

Abstract

Let $F$ be a non-Archimedean locally compact field of residual characteristic $p$ with $p\neq 2$. Let $n$ be a power of $p$ and let $G$ be an inner form of the general linear group $\text{\rm GL}_n(F)$. We give a transparent parametrization of the irreducible, totally ramified, cuspidal representations of $G$ of parametric degree $n$. We show that the parametrization is respected by the Jacquet-Langlands correspondence, relative to any other inner form. This expresses the Jacquet-Langlands correspondence for such representations within a single, compact formula.