3 papers
math.RT2026
-character stacks and Langlands duality over finite fields
Emmanuel Letellier, Tommaso Scognamiglio
In this paper we study the mixed Poincaré polynomial of generic -character stacks with coefficients in some local systems arising from the conjugacy cl…
math.RT2025
Ennola duality for decomposition of tensor products
Emmanuel Letellier, Fernando Rodriguez-Villegas
The aim of this paper is to investigate Ennola duality for decomposition of tensor products of irreducible characters of finite general linear groups and finite unitary groups. We…
math.RT2025
Notes on a conjecture of Braverman-Kazhdan
Gérard Laumon, Emmanuel Letellier
Given a connected reductive algebraic group G over a finite field together with a representation of the dual group of G in GL(n), Braverman and Kazhdan defined an exotic Fourier op…