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We study Harish-Chandra bimodules over the rational Cherednik algebra $H_{c}(W)$ associated to a complex reflection group $W$ with parameter $c$. Our results allow us to partially reduce the study of these bimodules to smaller algebras. We…

Representation Theory · Mathematics 2024-07-04 José Simental

We prove an analogue of Beurling's theorem on the H-type groups of certain dimensions after establishing the Gutzmer's formula for the H-type groups. We also obtain some other versions of the theorem using the modified Radon transform.

Functional Analysis · Mathematics 2025-05-22 Aparajita Dasgupta , Prerna Gulia , Sanjoy Pusti , Sundaram Thangavelu

A basic exact sequence by Harish-Chandra related to the invariant differential operators on a Riemannian symmetric space G/K is generalized for each K-type in a certain class which we call `single-petaled'. The argument also includes a…

Representation Theory · Mathematics 2007-05-23 Hiroshi Oda

In this paper, we establish the parahoric reduction theory of formal connections (or Higgs fields) on a formal principal bundle with parahoric structures, which generalizes Babbitt-Varadarajan's result for the case without parahoric…

Algebraic Geometry · Mathematics 2024-09-10 Zhi Hu , Pengfei Huang , Ruiran Sun , Runhong Zong

The aim of this paper is to present an explicit reduction algorithm for Hilbert modular groups over arbitrary totally real number fields. An implementation of the algorithm is available to download from [19]. The exposition is…

Number Theory · Mathematics 2021-11-29 Fredrik Stromberg

Hiraga, Ichino and Ikeda have conjectured an explicit expression for the Plancherel density of the group of points of a reductive group defined over a local field $F$, in terms of local Langlands parameters. In these lectures we shall…

Representation Theory · Mathematics 2018-07-30 Eric Opdam

If $G$ is a reductive Lie group of Harish-Chandra class, $H$ is a symmetric subgroup, and $\pi$ is a discrete series representation of $G$, the authors give a condition on the pair $(G,H)$ which guarantees that the direct integral…

Representation Theory · Mathematics 2013-08-08 Benjamin Harris , Hongyu He , Gestur Olafsson

Suppose G is a real reductive Lie group in Harish-Chandra's class. We propose here a structure for the set \Pi_u(G) of equivalence classes of irreducible unitary representations of G. (The subscript u will be used throughout to indicate…

Representation Theory · Mathematics 2016-09-07 Susana A. Salamanca-Riba , David A. Vogan

Let $W$ be a finite Coxeter group and $\Omega$ be its $W$-graph algebra as defined by Gyoja. The author's previous paper \cite{hahn2016wgraphs} considered this algebra in some detail, proposed, and proved in some small cases the $W$-graph…

Representation Theory · Mathematics 2017-07-11 Johannes Hahn

The wavefront set is a fundamental invariant arising from the Harish-Chandra-Howe local character expansion of an admissible representation. We prove a precise formula for the wavefront set of an irreducible Iwahori-spherical representation…

Representation Theory · Mathematics 2023-03-20 Dan Ciubotaru , Lucas Mason-Brown , Emile Okada

Recently the correlation functions of the so-called Itzykson-Zuber/Harish-Chandra integrals were computed (by one of the authors and collaborators) for all classical groups using an integration formula that relates integrals over compact…

Group Theory · Mathematics 2008-04-11 M. Bertola , A. Prats Ferrer

We obtain the Plancherel decomposition for a reductive symmetric space in the sense of representation theory. Our starting point is the Plancherel formula for spherical Schwartz functions, obtained in part I (math.RT/0107063). The formula…

Representation Theory · Mathematics 2007-05-23 E. P. van den Ban , H. Schlichtkrull

The current paper is devoted to the scattering theory of a class of continuum Schr\"{o}dinger operators with deterministic sparse potentials. We first establish the limiting absorption principle for both modified free resolvents and…

Spectral Theory · Mathematics 2015-06-17 Zhongwei Shen

Let G be a real semi-simple Lie group and H a closed subgroup which admits an open orbit on the flag manifold of a minimal parabolic subgroup. Let V be a Harish-Chandra module. A sharp finite bound is given for the dimension of the space of…

Representation Theory · Mathematics 2017-11-27 Bernhard Krötz , Henrik Schlichtkrull

We present a short proof, based on local character expansions, of the celebrated theorem of Harish-Chandra about local integrability of complex characters of $p$-adic reductive groups. The proof gives an algebraic incarnation of the local…

Representation Theory · Mathematics 2026-04-17 Cheng-Chiang Tsai

We give the exact contributions of Harish-Chandra transform, $(\mathcal{H}f)(\lambda),$ of Schwartz functions $f$ to the harmonic analysis of spherical convolutions and the corresponding $L^{p}-$ Schwartz algebras on a connected semisimple…

Representation Theory · Mathematics 2017-06-29 Olufemi O. Oyadare

For a semisimple Lie group $G$ satisfying the equal rank condition, the most basic family of unitary irreducible representations is the discrete series found by Harish-Chandra. In this paper, we study some of the branching laws for discrete…

Representation Theory · Mathematics 2020-12-23 Bent Orsted , Jorge A. Vargas

The aim of this article is to give a complete proof of results of Harish-Chandra linking the irreducibility of parabolic induction of a supercuspidal representation of a p-adic group to the analytic behavior of the mu-function of…

Representation Theory · Mathematics 2026-04-10 Volker Heiermann

Let G be a connected reductive real Lie group, and H a compact connected subgroup. Harish-Chandra associates to a regular coadjoint admissible orbit M of G some unitary representations of G. Using the character formula for these…

Representation Theory · Mathematics 2011-10-06 Michel Duflo , Michèle Vergne

For a complex reflection group $W$ with reflection representation $\mathfrak{h}$, we define and study a natural filtration by Serre subcategories of the category $\mathcal{O}_c(W, \mathfrak{h})$ of representations of the rational Cherednik…

Representation Theory · Mathematics 2018-02-15 Ivan Losev , Seth Shelley-Abrahamson