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A natural higher dimensional analogue of the affine-Virasoro algebra is the full toroidal Lie algebra. In this paper, we classify irreducible Harish-Chandra modules for map full toroidal Lie algebras. We show that every such module is…

Representation Theory · Mathematics 2025-08-18 Sudipta Mukherjee

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

The category of character D-modules is realized as Drinfeld center of the abelian monoidal category of Harish-Chandra bimodules. Tensor product of Harish-Chandra bimodules is related to convolution of D-modules via the long intertwining…

Representation Theory · Mathematics 2014-06-03 Roman Bezrukavnikov , Michael Finkelberg , Victor Ostrik

Harish-Chandra induction and restriction functors play a key role in the representation theory of reductive groups over finite fields. In this paper, extending earlier work of Dat, we introduce and study generalisations of these functors…

Representation Theory · Mathematics 2016-07-18 Tyrone Crisp , Ehud Meir , Uri Onn

Let $ \pi $ be an irreducible Harish-Chandra $ (\mathfrak{g}, K) $-module, and denote its associated variety by $ AV(\pi) $. If $ AV(\pi) $ is reducible, then each irreducible component must contain codimension one boundary component. Thus…

Representation Theory · Mathematics 2014-10-10 Kyo Nishiyama , Peter Trapa , Akihito Wachi

We develop a theory of microlocalization for Harish-Chandra modules, adapting a construction of Losev (\cite{Losev2011}). We explore the applications of this theory to unipotent representations of real reductive groups. For complex groups,…

Representation Theory · Mathematics 2021-08-26 Lucas Mason-Brown

In his first 1958 paper on zonal spherical functions Harish-Chandra proved an extremely delicate convergence theorem which was basic to his subsequent definition of his Schwartz space and his theory of cusp forms. This paper gives…

Representation Theory · Mathematics 2022-07-04 Nolan R. Wallach

Let $D(G)$ be the algebra of algebraic differential operators on a complex reductive group $G$. Denote by $\mathbb{W}$ the bi-Whittaker quantum Hamiltonian reduction of $D(G)$, also known as the quantum Toda lattice. In this article we…

Representation Theory · Mathematics 2026-02-26 Wen-Wei Li

Consider the character of an irreducible admissible representation of a p-adic reductive group. The Harish-Chandra-Howe local expansion expresses this character near a semisimple element as a linear combination of Fourier transforms of…

Representation Theory · Mathematics 2007-06-28 Jeffrey D. Adler , Jonathan Korman

This paper is a review of results on generalized Harish-Chandra modules in the framework of cohomological induction. The main results, obtained during the last 10 years, concern the structure of the fundamental series of…

Representation Theory · Mathematics 2013-10-31 Ivan Penkov , Gregg Zuckerman

We classify Harish-Chandra bimodules over the quantized flower quiver varieties with minimal support. We show that if the dimension vector is $n$, then there are $n!$ minimally supported simple Harish-Chandra bimodules for integral…

Representation Theory · Mathematics 2023-10-06 Yaochen Wu

For any reductive Lie algebra $\mathfrak{g}$ and commutative, associative, unital algebra $S$, we give a complete classification of the simple weight modules of $\mathfrak{g}\otimes S $ with finite weight multiplicities. In particular, any…

Representation Theory · Mathematics 2017-05-12 Michael Lau

In this paper, we give elementary proofs of the Restricted Burnside Problem and the Hughes Conjecture for finite $p$-groups with Hall's regular power structure property. Moreover, in this setting we determine an explicit bound on the order…

Group Theory · Mathematics 2020-04-10 James Williams

These notes contain an introduction to the theory of complex semisimple quantum groups. Our main aim is to discuss the classification of irreducible Harish-Chandra modules for these quantum groups, following Joseph and Letzter. Along the…

Quantum Algebra · Mathematics 2020-09-29 Christian Voigt , Robert Yuncken

We define exact functors from categories of Harish-Chandra modules for certain real classical groups to finite-dimensional modules over an associated graded affine Hecke algebra with parameters. We then study some of the basic properties of…

Representation Theory · Mathematics 2009-06-15 Dan Ciubotaru , Peter E. Trapa

Let $q$ be a prime power and $U$ the group of lower unitriangular matrices of order $n$ for some natural number $n$. We give a lower bound for the degrees of irreducible constituents of Andr\'{e}-Yan supercharacters and classify the…

Representation Theory · Mathematics 2013-12-13 Richard Dipper , Qiong Guo

In this paper, we classify all indecomposable Harish-Chandra modules of the intermediate series over the twisted Heisenberg-Virasoro algebra. Meanwhile, some bosonic modules are also studied.

Representation Theory · Mathematics 2010-07-26 Dong Liu , Cuipo Jiang

Given a quaternionic form G of a p-adic classical group (p odd) we classify all cuspidal irreducible representations of G with coefficients in an algebraically closed field of characteristic different from p. We prove two theorems: At…

Representation Theory · Mathematics 2022-11-09 Daniel Skodlerack

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

Let F be a non-archimedean local field and G be the group GL(N,F). Let \pi be a smooth complex representation of G lying in the Bernstein block B(\pi) of some simple type in the sense of Bushnell and Kutzko. Refining the approach of the…

Representation Theory · Mathematics 2014-02-12 Paul Broussous , Peter Schneider