activity
20192025
most citedProof of the geometric Langlands conjecture II: Kac-Moody localization and the FLE

2 citations · 5 across the 8 of their papers we have counts for

collaborators

8 papers

math.RT2025

Parabolic geometric Eisenstein series and constant term functors

Joakim Faergeman, Andreas Hayash

We prove a compatibility between parabolic restriction of Whittaker sheaves and restriction of representations under the geometric Casselman-Shalika equivalence. To do this, we est…

math.RT2024

Singular support for G-categories

Gurbir Dhillon, Joakim Færgeman

For a reductive group , we introduce a notion of singular support for cocomplete dualizable DG-categories equipped with a strong -action. This is done by considering the sing…

math.AG2024★ 1 cited

Proof of the geometric Langlands conjecture IV: ambidexterity

D. Arinkin, D. Beraldo, L. Chen +5

This paper performs the following steps toward the proof of GLC in the de Rham setting: (i) We deduce GLC for G=GL_n; (ii) We prove that the Langlands functor L_G constructed in [G…

math.AG2024★ 2 cited

Proof of the geometric Langlands conjecture III: compatibility with parabolic induction

Justin Campbell, Lin Chen, Joakim Faergeman +4

We establish the compatibility of the Langlands functor with the operations of Eisenstein series constant term, and deduce that the Langlands functor induces an equivalence on Eise…

math.AG2024

Motivic realization of rigid G-local systems on curves and tamely ramified geometric Langlands

Joakim Færgeman

For a reductive group , we prove that complex irreducible rigid -local systems with quasi-unipotent monodromies and finite order abelianization on a smooth curve are motivic,…

math.AG2024★ 2 cited

Proof of the geometric Langlands conjecture II: Kac-Moody localization and the FLE

D. Arinkin, D. Beraldo, J. Campbell +6

This paper is the second in a series of five that together prove the geometric Langlands conjecture. Our goals are two-fold: (1) Formulate and prove the Fundamental Local Equivalen…

math.RT2022

Quasi-Tempered Automorphic D-modules

Joakim Færgeman

In this paper, we introduce the category of quasi-tempered automorphic D-modules, which is a rather natural class of D-modules from the point of view of geometric Langlands. We pro…

math.GR2019

On super-monomial characters and groups having two irreducible monomial character degrees

Joakim Færgeman

A character of a group is said to be super-monomial if every primitive character inducing it is linear. It is conjectured by Isaacs that every irreducible character of an odd -g…