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We consider four classes of classical groups over a non-archimedean local field F: symplectic, (special) orthogonal, general (s)pin and unitary. These groups need not be quasi-split over F. The main goal of the paper is to obtain a local…

Representation Theory · Mathematics 2025-06-24 Anne-Marie Aubert , Ahmed Moussaoui , Maarten Solleveld

Let $G$ be a connected reductive group over a non-archimedean local field $F$ of residue characteristic $p$, $P$ be a parabolic subgroup of $G$, and $R$ be a commutative ring. When $R$ is artinian, $p$ is nilpotent in $R$, and…

Representation Theory · Mathematics 2018-03-28 Julien Hauseux

In this paper we prove a local converse theorem for GL_n over the archimedean local fields, which characterizes an infinitesimal equivalence class of irreducible admissible representations of GL_n(R) (or GL_n(C)) in terms of twisted…

Representation Theory · Mathematics 2017-03-20 Moshe Adrian , Shuichiro Takeda

We prove the Jacquet-Langlands local correspondence in non-zero characteristic, using the proof by Deligne, Kazhdan and Vign\'eras for the zero characteristic case and the theory of closed fields of Kazhdan. We also prove the orthogonality…

Group Theory · Mathematics 2007-05-23 Alexandru Ioan Badulescu

Let k be an algebraically closed field of characteristic >2, F=k((t)) and Mp(F) denote the metaplectic extension of Sp_{2d}(F). In this paper we propose a geometric analog of the Weil representation of Mp(F). This is a category of certain…

Representation Theory · Mathematics 2023-08-25 Vincent Lafforgue , Sergey Lysenko

It is shown for all local fields $\mathbb{F}$ which are of characteristic different from $2$ that any distribution on $GL_{n+1}(\mathbb{F})$ which is invariant under conjugation by $GL_n(\mathbb{F})$ is also invariant under transposition.…

Representation Theory · Mathematics 2021-09-09 Dor Mezer

Let F be a non-archimedean local field of characteristic zero whose residue field has at least three elements. Let G be an almost simple linear algebraic group over F, with rank_F(G) >= 2. Let X be a simply connected symmetric space of…

Group Theory · Mathematics 2026-04-17 Federico Viola

Let $F$ be a non-archimedean local field of residue characteristic $p$, $G$ be the group $GL(n, F)$. In this note, under the assumption $(n, p)=1$, we show a simple cuspidal representation $\pi$ (that with normalized level $\frac{1}{n}$) of…

Number Theory · Mathematics 2014-03-07 Peng Xu

Let H be a connected reductive group defined over a non-archimedean local field F of characteristic p>0. Using Poincar\'e series, we globalize supercuspidal representations of H(F) in such a way that we have control over ramification at all…

Number Theory · Mathematics 2016-04-07 Wee Teck Gan , Luis Lomelí

We extend the theory of local constants to l-adic families of representations of GL_n(F) where F is a p-adic field with l not equal to p. We construct zeta integrals and gamma factors for representations coming from the conjectural "local…

Number Theory · Mathematics 2015-08-24 Gilbert Moss

We can associate local constant to every continuous finite dimensional complex representation of the absolute Galois group $G_F$ of a non-archimedean local field $F/\mathbb{Q}_p$ by Deligne and Langlands. To give explicit formula of local…

Number Theory · Mathematics 2016-03-22 Sazzad Ali Biswas

In this paper, we explicitly compute the standard epsilon factors on both sides of the local Langlands correspondence for simple supercuspidal representations of GL(n,F).

Number Theory · Mathematics 2014-04-30 Moshe Adrian

In \cite{lafforgue2012chtoucas}, Vicent Lafforgue attaches a semisimple Langlands parameter (or, what amounts to the same thing, a $\hat{G}$-pseudocharacter) to every cuspidal automorphic representation of a reductive group $G$ over the…

Number Theory · Mathematics 2018-10-31 Yang An

We prove a small cap decoupling theorem for the parabola over a general non-Archimedean local field for which $2\neq 0$. We obtain polylogarithmic dependence on the scale parameter $R$ and polynomial dependence in the residue prime, except…

Classical Analysis and ODEs · Mathematics 2025-09-25 Ben Johnsrude

Let $F$ be a non-Archimedean local field with finite residual field of characteristic $p$. In this article we calculate the $\epsilon$-factor of pairs for $\GL_l(F) \times \GL_{l'}(F)$ where $l$ and $l'$ are distinct primes including the…

Number Theory · Mathematics 2007-05-23 Tetsuya Takahashi

For $E/F$ a quadratic extension of local fields, and $\pi$ an irreducible admissible generic representation of $SL_n(E)$, we calculate the dimension of $Hom_{SL_n(F)}[\pi,C]$ and relate it to fibers of the base change map corresponding to…

Number Theory · Mathematics 2016-12-06 U. K. Anandavardhanan , Dipendra Prasad

We prove a number of unconditional statistical results of the Hecke coefficients for unitary cuspidal representations of $\operatorname{GL}(2)$ over number fields. Using partial bounds on the size of the Hecke coefficients, instances of…

Number Theory · Mathematics 2026-05-15 Liubomir Chiriac , Andrei Jorza

Following a scheme inspired by B. Feigon, we describe the spectral side of a local relative trace formula for $G:= PGL(2,\rm E)$ relative to the symmetric subgroup $H:=PGL(2,\rm F)$ where $\rm E/\rm F$ is an unramified quadratic extension…

Representation Theory · Mathematics 2018-03-16 Patrick Delorme , Pascale Harinck

We give a full description of locally finite p-groups G such that the normalized group of units V(FG) of the group algebra FG over a field F of characteristic p has exponent 4.

Rings and Algebras · Mathematics 2016-07-22 V. A. Bovdi , M. A. Salim

Let $E/F$ be a finite and Galois extension of non-archimedean local fields. Let $G$ be a connected reductive group defined over $E$ and let $M: = \mathfrak{R}_{E/F}\, G$ be the reductive group over $F$ obtained by Weil restriction of…

Representation Theory · Mathematics 2020-07-03 Anne-Marie Aubert , Roger Plymen