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We continue the study of the fundamental series of generalized Harish-Chandra modules initiated in [PZ2]. Generalized Harish-Chandra modules are (g,k)-modules of finite type where g is a semisimple Lie algebra and k \subset g is a reductive…

Representation Theory · Mathematics 2011-09-09 Ivan Penkov , Gregg Zuckerman

In this paper, we classify the irreducible Harish-Chandra modules over the full toroidal Lie algebra, which is a natural higher-dimensional analogue of the affine-Virasoro algebra. In particular, we complete the classification of…

Representation Theory · Mathematics 2025-12-11 Souvik Pal

With the $\Omega$-operators for the Virasoro algebra \cite{BF} and the super Virasoro algebra in \cite{CL, CLL}, we get the $\Omega$-operators for the Ovsienko-Roger superalgebras in this paper and then use it to classify all simple…

Representation Theory · Mathematics 2024-03-13 Munayim Dilxat , Liangyun Chen , Dong Liu

Let $\mathfrak g$ be a classical Lie superalgebra of type I or a Cartan-type Lie superalgebra {\bf W}$(n)$. We study weight $\mathfrak g$-modules using a method inspired by Mathieu's classification of the simple weight modules with finite…

Representation Theory · Mathematics 2007-05-23 Dimitar Grantcharov

We classify all simple bounded highest weight modules of a basic classical Lie superalgebra $\mathfrak g$. In particular, our classification leads to the classification of the simple weight modules with finite weight multiplicities over all…

Representation Theory · Mathematics 2019-01-01 Maria Gorelik , Dimitar Grantcharov

We construct categories of Harish-Chandra bimodules for affine Lie algebras analogous to Harish-Chandra bimodules with infinitesimal characters for simple Lie algebras, addressing an old problem raised by I. Frenkel and Malikov. Under an…

Representation Theory · Mathematics 2021-08-09 Justin Campbell , Gurbir Dhillon

We investigate the structure and representation theory of finite-dimensional $\mathbb{Z}$-graded Lie algebras, including the corresponding root systems and Verma, irreducible, and Harish-Chandra modules. This extends the familiar theory for…

Representation Theory · Mathematics 2025-07-02 Mark D. Gould , Phillip S. Isaac , Ian Marquette , Jorgen Rasmussen

The notion of a Harish-Chandra bimodule, i.e. finitely generated $U(\mathfrak{g})$-bimodule with locally finite adjoint action, was generalized to any filtered algebra in a work of Losev [Ivan Losev, Dimensions of irreducible modules over…

Representation Theory · Mathematics 2020-03-26 Daniil Klyuev

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

In this manuscript we make a general study of the representations realized, for a reductive Lie group of Harish-Chandra class, on the compactly supported sheaf cohomology groups of an irreducible finite-rank polarized homogeneous vector…

Representation Theory · Mathematics 2008-04-03 Tim Bratten

All simple weight modules with finite dimensional weight spaces over affine Lie algebras are classified.

Representation Theory · Mathematics 2009-10-06 Ivan Dimitrov , Dimitar Grantcharov

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

In this paper, we classify all simple jet modules for the Neveu-Schwarz algebra $\widehat{\mathfrak{k}}$ and its contact subalgebra $\mathfrak{k}^+$. Based on these results, we give a classification of simple Harish-Chandra modules for…

Representation Theory · Mathematics 2020-10-02 Yan-an Cai , Rencai Lü

We study Harish-Chandra bimodules for the rational Cherednik algebra associated to the symmetric group $S_{n}$. In particular, we show that for any parameter $c \in \mathbb{C}$, the category of Harish-Chandra $H_{c}$-bimodules admits a…

Representation Theory · Mathematics 2024-01-15 José Simental

If $\Gamma$ is a subalgebra of $A$, then an $A$-module is called a Harish-Chandra module if it is the direct sum of its generalized weight spaces with respect to $\Gamma$. In 1994, Drozd, Futorny, and Ovsienko defined a generalization of a…

Representation Theory · Mathematics 2023-07-25 Dylan Fillmore

For a finite-dimensional simple Lie algebra $\mathfrak{g}$, we use the vertex tensor category theory of Huang and Lepowsky to identify the category of standard modules for the affine Lie algebra $\hat{\mathfrak{g}}$ at a fixed level…

Quantum Algebra · Mathematics 2018-10-02 Robert McRae

Let $G$ be a connected simply connected noncompact exceptional simple Lie group of Hermitian type. In this paper, we work with the Dirac inequality which is a very useful tool for the classification of unitary highest weight modules.

Representation Theory · Mathematics 2025-10-20 Pavle Pandžić , Ana Prlić , Vladimír Souček , Vít Tuček

We classify the domains of holomorphy of all Harish-Chandra modules of irreducible unitary representations of simple non-compact Lie groups.

Representation Theory · Mathematics 2009-11-11 Bernhard Kroetz

Let $\mathfrak{g}$ be a reductive Lie algebra and let $\vec{V}(\vec{\lambda})$ be a tensor product of $k$ copies of finite dimensional irreducible $\mathfrak{g}$-modules. Choosing $k$ points in $\mathbb{C}$, $\vec{V}(\vec{\lambda})$…

Representation Theory · Mathematics 2016-07-22 Shrawan Kumar

Let $L(\lambda)$ be a highest weight Harish-Chandra module with highest weight $\lambda$. When the associated variety of $L(\lambda)$ is not maximal, that is, not equal to the nilradical of the corresponding parabolic subalgebra, we prove…

Representation Theory · Mathematics 2024-09-26 Zhanqiang Bai , Markus Hunziker