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Let $F$ be a non Archimedean local field, and $G$ be the $F$-points of a connected quasi-split reductive group defined over $F$. In this note we propose a converse theorem statement for generic Langlands parameters of $G$ when the Langlands…

Representation Theory · Mathematics 2025-10-29 Nadir Matringe

We associate to every irreducible representation of a reductive group over a local field of equal characteristics a local Langlands parameter up to semisimplification and prove the compatibility with the global parameterization constructed…

Algebraic Geometry · Mathematics 2018-08-07 Alain Genestier , Vincent Lafforgue

In this paper, we define compact open subgroups of quasi-split even unitary groups for each even non-negative integers, and establish the theory of local newforms for irreducible tempered generic representations with a certain condition on…

Representation Theory · Mathematics 2025-02-05 Hiraku Atobe

Let H be any reductive p-adic group. We introduce a notion of cuspidality for enhanced Langlands parameters for H, which conjecturally puts supercuspidal H-representations in bijection with such L-parameters. We also define a cuspidal…

Representation Theory · Mathematics 2025-05-09 Anne-Marie Aubert , Ahmed Moussaoui , Maarten Solleveld

We study the local Langlands functoriality transfer from $\text{SO}(5, F)$ to $\text{GL}(4, F)$ for arbitrary twists of several families of irreducible supercuspidal representations of $\text{GL}(4, F)$, where $F$ is a non-archimedean local…

Representation Theory · Mathematics 2025-09-16 David C. Luo

For a cuspidal automorphic representation of GL2/Q associated to a modular form, the local and global Langlands correspondences are compatible at all finite places of Q. On the p-adic Coleman-Mazur eigencurve this principle can fail (away…

Number Theory · Mathematics 2010-01-14 Alexander G. M. Paulin

It is conjectured by Adams-Vogan and Prasad that under the local Langlands correspondence, the L-parameter of the contragredient representation equals that of the original representation composed with the Chevalley involution of the…

Representation Theory · Mathematics 2019-07-17 Wen-Wei Li

Let F be a non-archimedean local field. We establish the local Langlands correspondence for all inner forms of the group $SL_n (F)$. It takes the form of a bijection between, on the one hand, conjugacy classes of Langlands parameters for…

Representation Theory · Mathematics 2016-12-09 Anne-Marie Aubert , Paul Baum , Roger Plymen , Maarten Solleveld

In this paper we first review the setting for the geometric Langlands functoriality and establish a result for the `backward' functoriality functor. We illustrate this by known examples of the geometric theta-lifting. We then apply the…

Representation Theory · Mathematics 2021-01-05 Sergey Lysenko

We prove the compatibility of the local and global Langlands correspondences at places dividing l for the l-adic Galois representations associated to regular algebraic conjugate self-dual cuspidal automorphic representations of GL_n over an…

Number Theory · Mathematics 2011-05-12 Thomas Barnet-Lamb , Toby Gee , David Geraghty , Richard Taylor

We adapt the conjectural local Langlands parameterization to split metaplectic groups over local fields. When $\tilde G$ is a central extension of a split connected reductive group over a local field (arising from the framework of Brylinski…

Representation Theory · Mathematics 2011-08-09 Martin H. Weissman

Let $G=Sp(4,\mathbb{R})$ and let $\pi$ be an irreducible, unitary representation of $G$ which is cohomological with respect to trivial coefficients. Using the inclusion from $SO(5,\mathbb{C})$ to $GL(5,\mathbb{C})$, we transfer $\pi$ to an…

Number Theory · Mathematics 2019-11-05 Makarand Sarnobat

In this paper, we establish the theory of local newforms for irreducible tempered generic representations of unramified odd unitary groups over a non-archimedean local field. For the proof, we prove an analogue of the fundamental lemma for…

Number Theory · Mathematics 2022-06-22 Hiraku Atobe , Masao Oi , Seidai Yasuda

We classify the automorphic representations (over number fields) and the irreducible admissible representations (over local fields) of unitary groups which are not quasi-split, under the assumption that the same is known for quasi-split…

Number Theory · Mathematics 2014-12-04 Tasho Kaletha , Alberto Minguez , Sug Woo Shin , Paul-James White

We present a new construction of the p-adic local Langlands correspondence for GL(2, Q_p) via the patching method of Taylor--Wiles and Kisin. This construction sheds light on the relationship between the various other approaches to both the…

Number Theory · Mathematics 2019-02-20 Ana Caraiani , Matthew Emerton , Toby Gee , David Geraghty , Vytautas Paskunas , Sug Woo Shin

Let F be a non-archimedean local field of characteristic zero. Jacquet and Shalika attached a family of zeta integrals to unitary irreducible generic representations $\pi$ of GL_n(F). In this paper, we show that Jacquet-Shalika integral…

Number Theory · Mathematics 2013-08-01 Michitaka Miyauchi , Takuya Yamauchi

This is Part IV of a thematic series currently consisting of a monograph and four essays. This essay examines the form of induced representations of locally p-adic Lie groups G which is appropriate for the abelian category of ${\mathcal…

Representation Theory · Mathematics 2020-08-17 Victor Snaith

Let G be the unramified unitary group in three variables defined over a p-adic field of odd residual characteristic. In this paper, we establish a theory of newforms for the Rankin-Selberg integral for G introduced by Gelbart and…

Representation Theory · Mathematics 2012-08-02 Michitaka Miyauchi

We prove the recent conjectures of Adams-Vogan and D. Prasad on the behavior of the local Langlands correspondence with respect to taking the contragredient of a representation. The proof holds for tempered representations of quasi-split…

Representation Theory · Mathematics 2012-05-11 Tasho Kaletha

In [12], Jacquet--Piatetskii-Shapiro--Shalika defined a family of compact open subgroups of $p$-adic general linear groups indexed by non-negative integers, and established the theory of local newforms for irreducible generic…

Number Theory · Mathematics 2022-09-29 Hiraku Atobe , Satoshi Kondo , Seidai Yasuda