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We investigate the local descents for special orthogonal groups over p-adic local fields of characteristic zero, and obtain an explicit spectral decomposition of the local descents at the first occurrence index in terms of the local…

Representation Theory · Mathematics 2018-10-17 Dihua Jiang , Lei Zhang

Motivated by the Langlands program in representation theory, number theory and geometry, the theory of representations of a reductive $p$-adic group over a coefficient ring different from the field of complex numbers has been widely…

Representation Theory · Mathematics 2022-05-05 Marie-France Vignéras

These notes give a statement of the "fundamental lemma," which is a conjectural identity between p-adic integrals that arises as part of the Langlands program.

Representation Theory · Mathematics 2007-05-23 Thomas C. Hales

We establish an explicit correspondence of certain Arthur packets between real unitary groups and $p$-adic symplectic or orthogonal groups. This allows one to compute Arthur packets of real unitary groups by translating results from the…

Representation Theory · Mathematics 2026-03-18 Taiwang Deng , Chang Huang , Bin Xu , Qixian Zhao

In one of our previous articles, we outlined the formulation of a version of the categorical arithmetic local Langlands conjecture. The aims of this article are threefold. First, we provide a detailed account of one component of this…

Representation Theory · Mathematics 2025-04-11 Xinwen Zhu

We use enhanced Langlands parameters to obtain a classification for irreducible representations of twisted $p$-adic general linear groups in unramified principal series. We give the definition of standard representations and prove the…

Representation Theory · Mathematics 2026-04-24 Yuan Chai

Let G be a split connected reductive group over a local non-archimedean field. We classify all irreducible complex G-representations in the principal series, irrespective of the (dis)connectedness of the centre of G. This leads to a local…

Representation Theory · Mathematics 2017-08-09 Anne-Marie Aubert , Paul Baum , Roger Plymen , Maarten Solleveld

A p-compact group, as defined by Dwyer and Wilkerson, is a purely homotopically defined p-local analog of a compact Lie group. It has long been the hope, and later the conjecture, that these objects should have a classification similar to…

Algebraic Topology · Mathematics 2008-04-19 Kasper K. S. Andersen , Jesper Grodal , Jesper M. Møller , Antonio Viruel

Let G be an orthogonal or symplectic p-adic group (not necessarily split) or an inner form of a general linear p-adic group. In a previous paper, it was shown that the Bernstein components of the category of smooth representations of G are…

Representation Theory · Mathematics 2011-12-20 Volker Heiermann

The classification of irreducible, spherical characters of the infinite-dimensional unitary/orthogonal/symplectic groups can be obtained by finding all possible limits of normalized, irreducible characters of the corresponding…

Representation Theory · Mathematics 2018-12-18 Cesar Cuenca , Vadim Gorin

On montre comment les conjectures d'Arthur permettent de calculer les points de r\'eductibilit\'e pour les induites de cuspidales des groupes classiques. Les conjectures d'Arthur utilis\'ees portent sur l'existence d'un rel\`evement faible…

Representation Theory · Mathematics 2016-09-07 Colette Mœglin

The purpose of this paper is to introduce new definitions of H\"ormander classes for pseudo-differential operators over the compact group of $p$-adic integers. Our definitions possess a symbolic calculus, asymptotic expansions and…

Functional Analysis · Mathematics 2019-12-25 Juan Pablo Velasquez-Rodriguez

Nous \'etendons aux groupes orthogonaux et unitaires non quasi-d\'eploy\'es sur un corps local des r\'esultats de J. Arthur et de la premi\`ere auteure \'etablis dans le cas quasi-d\'eploy\'e. En particulier, nous obtenons une…

Representation Theory · Mathematics 2018-03-22 Colette Moeglin , David Renard

We characterize those finite groups for which the bounded derived category of finite dimensional representations over an algebraically closed field of characteristic $p$ has distributive lattice of thick subcategories: they are precisely…

Representation Theory · Mathematics 2026-05-01 Sira Gratz , Greg Stevenson

We prove a p-adic Labesse-Langlands transfer from the group of units in a definite quaternion algebra to its subgroup of norm one elements. More precisely, given an eigenvariety for the first group, we show that there exists an eigenvariety…

Number Theory · Mathematics 2017-01-05 Judith Ludwig

In 2008, the author proposed a version of duality theory for (not necessarily, Abelian) complex Lie groups, based on the idea of using the Arens-Michael envelope of topological algebra and having an advantage over existing theories in that…

Functional Analysis · Mathematics 2022-10-18 S. S. Akbarov

A Langlands parameter, in the Langlands dual group, can be decomposed into a product of a tempered parameter and a positive quasi-character. Fixing a tempered parameter, Arthur conjectured that positive quasi-characters corresponding to…

Representation Theory · Mathematics 2013-03-20 Hongyu He

Let G be an unramified reductive group over a non archimedian local field F. The so-called "Langlands Fundamental Lemma" is a family of conjectural identities between orbital integrals for G(F) and orbital integrals for endoscopic groups of…

Algebraic Geometry · Mathematics 2007-05-23 G. Laumon , B. C. Ngo

We extend Urban's construction of eigenvarieties for reductive groups $G$ such that $G(\mathbb{R})$ has discrete series to include characteristic $p$ points at the boundary of weight space. In order to perform this construction, we define a…

Number Theory · Mathematics 2021-11-02 Daniel R. Gulotta

In the case of p-adic general linear groups, each irreducible representation is parabolically induced by a tensor product of irreducible representations supported by cuspidal lines. One gets in this way a parameterization of the irreducible…

Representation Theory · Mathematics 2020-10-30 Marko Tadic