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For a finite-dimensional Lie algebra $\mathfrak{L}$ over $\mathbb{C}$ with a fixed Levi decomposition $\mathfrak{L} = \mathfrak{g} \oplus \mathfrak{r}$ where $\mathfrak{g}$ is semi-simple, we investigate $\mathfrak{L}$-modules which…

Representation Theory · Mathematics 2022-05-23 Volodymyr Mazorchuk , Rafael Mrđen

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 study $\mathbb Z_2\times\mathbb Z_2$ bi-graded Lie algebras. We describe their properties in relation to Lie superalgebras with some compatible structures. Then we focus on the approach to the Lie group--algebra correspondence based on…

Differential Geometry · Mathematics 2026-01-27 Olga Chekeres , Alexei Kotov , Vladimir Salnikov

We prove that the Harish-Chandra--Schwartz space associated with a discrete subgroup of a semisimple Lie group is a dense subalgebra of the reduced $C^*$-algebra of the discrete subgroup. Then, we prove that for the reduced $C^*$-norm is…

Group Theory · Mathematics 2016-07-27 Adrien Boyer

Recently, Venkatesh extended the category equivalence between affine algebraic groups and Harish-Chandra pairs, which was proved by the author in the supersymmetric context, to the situation of the Verlinde category in positive…

Algebraic Geometry · Mathematics 2025-05-13 Akira Masuoka

We consider the category of Harish-Chandra modules for ${\rm SL}_2(\mathbb R)$ as a module over the category of finite-dimensional representations of ${\rm SL}(2)$ with respect to the tensor product. In this note we use classical results…

Representation Theory · Mathematics 2021-04-06 Fabian Januszewski

In this paper, we provide a uniform method to thoroughly classify all Harish-Chandra modules over some Lie algebras related to the Virasoro algebras. We first classify such modules over the Lie algebra $W(\varrho)[s]$ for $s=0,\frac12$.…

Representation Theory · Mathematics 2015-11-27 Dong Liu

Let $G$ be a connected real reductive group with maximal compact subgroup $K$ of equal rank, and let $\mathscr M$ be the category of Harish-Chandra modules for $G$. We relate three differentely defined pairings between two finite length…

Representation Theory · Mathematics 2014-09-16 David Renard

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

It is known that there exists a natural functor $\Phi$ from Lie supergroups to super Harish-Chandra pairs. A functor going backwards, that associates a Lie supergroup with each super Harish-Chandra pair, yielding an equivalence of…

Rings and Algebras · Mathematics 2018-10-31 Fabio Gavarini

This paper contains a non-trivial generalization of the Harish-Chandra transforms on a connected semisimple Lie group $G,$ with finite center, into what we term spherical convolutions. Among other results we show that its integral over the…

Representation Theory · Mathematics 2017-07-04 Olufemi O. Oyadare

This article is a record of the lecture at the centennial conference for Harish-Chandra. The admissibility theorem of Harish-Chandra concerns the restrictions of irreducible representations to maximal compact subgroups. In this article, we…

Representation Theory · Mathematics 2025-11-18 Toshiyuki Kobayashi

In this expository paper we describe the theory of Harish-Chandra highest weight representations and their explicit geometric realizations.

Representation Theory · Mathematics 2022-08-31 R. Fioresi , V. S. Varadarajan

For any complex reductive Lie algebra g and any locally finite g-module V, we extend to the tensor product of U(g) with V the Harish-Chandra description of g-invariants in the universal enveloping algebra U(g).

Representation Theory · Mathematics 2010-11-22 Sergey Khoroshkin , Maxim Nazarov , Ernest Vinberg

Recently, two of the authors of this paper constructed cyclic cocycles on Harish-Chandra's Schwartz algebra of linear reductive Lie groups that detect all information in the $K$-theory of the corresponding group $C^*$-algebra. The main…

Differential Geometry · Mathematics 2021-06-30 Peter Hochs , Yanli Song , Xiang Tang

A complex Lie supergroup can be described as a real Lie supergroup with integrable almost complex structure. The necessary and sufficient conditions on an almost complex structure on a real Lie supergroup for defining a complex Lie…

Complex Variables · Mathematics 2015-05-29 Matthias Kalus

We derive an explicit expression for the Haar integral on the quantized algebra of regular functions C_q[K] on the compact real form K of an arbitrary simply connected complex simple algebraic group G. This is done in terms of the…

Quantum Algebra · Mathematics 2009-11-07 Nicolai Reshetikhin , Milen Yakimov

We obtain a classification of simple modules with finite weight multiplicities over basic classical map superalgebras. Any such module is parabolic induced from a simple cuspidal bounded module over a cuspidal map superalgebra. Further on,…

Representation Theory · Mathematics 2025-04-14 Lucas Calixto , Vyacheslav Futorny , Henrique Rocha

This article is an exposition of the 1967 Annals paper by Parthasarathy, Ranga Rao, and Varadarajan, on irreducible admissible Harish-Chandra modules over complex semisimple Lie groups and Lie algebras. It was written in Winter 2012 to be…

Representation Theory · Mathematics 2012-09-07 Apoorva Khare

Motivated by the maximal subgroup problem of the finite classical groups we begin the classification of imprimitive irreducible modules of finite quasisimple groups. We obtain our strongest results for modules over fields of characteristic…

Group Theory · Mathematics 2013-12-23 Gerhard Hiss , William J. Husen , Kay Magaard