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Toroidal Lie algebras are universal central extentions of the finite dimensional simple Lie algbera tensored with Laurent Polynomials in several commuteing variables. In this paper we classify irreducible integrable modules for Toroidal Lie…

Representation Theory · Mathematics 2007-05-23 S. Eswara Rao

We give a complete description of the full automorphism group of a lattice vertex operator algebra, determine the twisted Zhu's algebra for the automorphism lifted from the -1 isometry of the lattice and classify the corresponding…

Quantum Algebra · Mathematics 2007-05-23 Chongying Dong , Kiyokazu Nagatomo

The rationality and C_2-cofiniteness of the orbifold vertex operator algebra V_{L_{2}}^{A_{4}} are established and all the irreducible modules are constructed and classified. This is part of classification of rational vertex operator…

Quantum Algebra · Mathematics 2012-09-26 Chongying Dong , Cuipo Jiang

The vertex operator algebras and modules associated to the highest weight modules for the Virasoro algebra over an arbitrary field F whose characteristic is not equal to 2 are studied. The irreducible modules of vertex operator algebra…

Quantum Algebra · Mathematics 2013-08-02 Chongying Dong , Li Ren

We show that the representation theory for the toroidal extended affine Lie algebras is controlled by a vertex operator algebra which is a tensor product of four VOAs: a sub-VOA of the hyperbolic lattice VOA, two affine VOAs and a Virasoro…

Representation Theory · Mathematics 2009-10-13 Yuly Billig

In this paper, all irreducible weight modules with finite dimensional weight spaces over the twisted Heisenberg-Virasoro algebra are determined. There are two different classes of them. One class is formed by simple modules of intermediate…

Representation Theory · Mathematics 2019-08-09 Rencai Lu , Kaiming Zhao

Fusion rules among irreducible modules of the free bosonic orbifold vertex operator algebra are completely determined.

Quantum Algebra · Mathematics 2007-05-23 Toshiyuki Abe

The automorphism group of the vertex operator algebra $V_L^+$ is studied by using its action on isomorphism classes of irreducible $V_L^+$-modules. In particular, the shape of the automorphism group of $V_L^+$ is determined when $L$ is…

Quantum Algebra · Mathematics 2007-05-23 Hiroki Shimakura

In this paper, we classify the finite dimensional irreducible modules for affine BMW algebra over an algebraically closed field with arbitrary characteristic.

Quantum Algebra · Mathematics 2012-06-19 Hebing Rui

We construct orbifolds of holomorphic lattice Vertex Operator Algebras for non-Abelian finite automorphism groups $G$. To this end, we construct twisted modules for automorphisms $g$ together with the projective representation of the…

Quantum Algebra · Mathematics 2019-09-23 Thomas Gemünden , Christoph A. Keller

Let L be a positive definite even lattice of rank one and V_L^+ be the fixed points of the lattice VOA V_L associated to L under an automorphism of V_L lifting the -1$ isometry of L. A set of generators and the full automorphism group of…

q-alg · Mathematics 2007-05-23 Chongying Dong , Robert L. Griess

In this paper, we study non-weight modules over gap-$p$ Virasoro algebras, including Whittaker modules, $\mathcal{U}(\mathbb{C} L_0)$-free modules and their tensor products. We establish necessary and sufficient conditions for universal…

Representation Theory · Mathematics 2025-05-22 Chengkang Xu , Fulin Chen , Shaobin Tan

Irreducibilities of Verma modules over a class of Block type Lie algebras are completely determined. The approach developed in the present paper can be used to deal with non-weight modules.

Quantum Algebra · Mathematics 2021-09-02 Qiufan Chen , Jianzhi Han

In this paper, we classify all irreducible weight modules with finite-dimensional weight spaces over the affine-Virasoro Lie algebra of type $A_1$.

Representation Theory · Mathematics 2016-06-29 Yun Gao , Naihong Hu , Dong Liu

We extend the Dong-Mason theorem on the irreducibility of modules for orbifold vertex algebras from [C. Dong, G. Mason, Duke Math. J. 86 (1997)] 305-321] for the category of weak modules. Let $V$ be a vertex operator algebra, $g$ an…

Quantum Algebra · Mathematics 2022-01-14 Drazen Adamovic , Ching Hung Lam , Veronika Pedic Tomic , Nina Yu

Let $G$ be a rank $n$ additive subgroup of $\bC$ and $\Vir[G]$ the corresponding Virasoro algebra of rank $n$. In the present paper, irreducible weight modules with finite dimensional weight spaces over $\Vir[G]$ are completely determined.…

Representation Theory · Mathematics 2019-08-09 Rencai Lu , Kaiming Zhao

Given a weight-one element $u$ of a vertex operator algebra $V$, we construct an automorphism of the category of generalized $g$-twisted modules for automorphisms $g$ of $V$ fixing $u$. We apply this construction to the case that $V$ is an…

Quantum Algebra · Mathematics 2022-11-11 Yi-Zhi Huang , Christopher Sadowski

The irreducible modules for the parafermion vertex operator algebra associated to any finite dimensional Lie algebra and any positive integer are identified, the quantum dimensions are computed and the fusion rules are determined.

Quantum Algebra · Mathematics 2016-10-18 Chunrui Ai , Chongying Dong , Xiangyu Jiao , Li Ren

We discuss the classification of strongly regular vertex operator algebras (VOAs) with exactly three simple modules whose character vector satisfies a monic modular linear differential equation with irreducible monodromy. Our Main Theorem…

Quantum Algebra · Mathematics 2020-08-05 Cameron Franc , Geoffrey Mason

We classify irreducible finite-dimensional modules of a collection of real Lie superalgebras that includes the simple ones, their classical variants, complex Lie superalgebras after restriction of scalars, and all real Lie algebras. Our…

Representation Theory · Mathematics 2026-04-13 Siddhartha Sahi , Hadi Salmasian , Vera Serganova