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A notion of generalized highest weight modules over the high rank Virasoro algebras is introduced, and a theorem, which was originally given as a conjecture by Kac over the Virasoro algebra, is generalized. Mainly, we prove that a simple…

Representation Theory · Mathematics 2007-05-23 Yucai Su

In this paper, using the theory of $\A$-cover developed in \cite{B1,BF1}, we completely classify all simple Harish-Chandra modules over the high rank $W$-algebra $W(2,2)$. As a byproduct, we obtain the classification of simple…

Representation Theory · Mathematics 2022-12-13 Haibo Chen

In this paper, we classify simple strong Harish-Chandra modules over the Lie superalgebra $W_{m,n}$ of vector fields on $\C^{m|n}$. Any such module is the unique simple submodule of some tensor module $F(P,V)$ for a simple weight module $P$…

Representation Theory · Mathematics 2021-06-11 Yan-an Cai , Rencai Lü , Yaohui Xue

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

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

In this paper, we classify the simple Harish-Chandra modules over the superconformal current algebra $\widehat{\frak g}$, which is the semi-direct sum of the $N=1$ superconformal algebra with the affine Lie superalgebra $\dot{\frak g}…

Representation Theory · Mathematics 2025-02-27 Y. He , D. Liu , Y. Wang

In this paper, we classify all simple Harish-Chandra modules over the super affine-Virasoro algebra $\widehat{\mathcal{L}}=\mathcal{W}\ltimes(\mathfrak{g}\otimes \mathcal{A})\oplus \mathbb{C}C$, where $\mathcal{A}=\mathbb{C}[t^{\pm…

Representation Theory · Mathematics 2021-12-15 Yan He , Dong Liu , Yan Wang

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

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

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

In this paper, we give a new approach to classify all simple Harish-Chandra modules for the N=1 Ramond algebra based on the so called A-cover theory developed in \cite{BF}

Representation Theory · Mathematics 2020-07-10 Yanan Cai , Dong Liu , Rencai Lü

We show that the support of a simple weight module over the Virasoro algebra, which has an infinite-dimensional weight space, coincides with the weight lattice and that all non-trivial weight spaces of such module are infinite dimensional.…

Representation Theory · Mathematics 2010-04-02 Volodymyr Mazorchuk , Kaiming Zhao

In this paper, we classify all irreducible weight modules with finite dimensional weight spaces over the $W$-algebra $W(2, 2)$. Meanwhile, all indecomposable modules with one dimensional weight spaces over the $W$-algebra $W(2, 2)$ are also…

Representation Theory · Mathematics 2008-01-18 Dong Liu , Linsheng Zhu

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

In this paper we use Block's classification of simple modules over the first Weyl algebra to obtain a complete classification of simple weight modules, in particular, of Harish-Chandra modules, over the 1-spatial ageing algebra age(1). Most…

Representation Theory · Mathematics 2017-07-25 Rencai Lu , Volodymyr Mazorchuk , Kaiming Zhao

In this article the simple modules over the rank-two quantized Weyl algebras at roots of unity over an algebraically closed field are classified.

Representation Theory · Mathematics 2023-10-09 Sanu Bera , Snehashis Mukherjee

We show that the support of a simple weight module over the Neveu-Schwarz algebra, which has an infinite-dimensional weight space, coincides with the weight lattice and that all non-trivial weight spaces of such module are…

Rings and Algebras · Mathematics 2012-01-09 Xiufu Zhang , Zhangsheng Xia

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

We classify all simple strong Harish-Chandra modules for the Lie superalgebra $W(m,n)$. We show that every such module is either strongly cuspidal or a module of the highest weight type. We construct tensor modules for $W(m,n)$, which are…

Representation Theory · Mathematics 2020-06-16 Yuly Billig , Vyacheslav Futorny , Kenji Iohara , Iryna Kashuba

We make a first step towards a classification of simple generalized Harish-Chandra modules which are not Harish-Chandra modules or weight modules of finite type. For an arbitrary algebraic reductive pair of complex Lie algebras $(\g,\k)$,…

Representation Theory · Mathematics 2007-05-23 Ivan Penkov , Gregg Zuckerman
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