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This is a survey on extended affine Lie algebras and related types of Lie algebras, which generalize affine Lie algebras.

Rings and Algebras · Mathematics 2008-05-23 Erhard Neher

In this exposition, I discuss several developments in the theory of vertex operator algebras, and I include motivation for the definition.

Quantum Algebra · Mathematics 2007-06-28 James Lepowsky

In this paper, we study Whittaker modules for graded Lie algebras. We define Whittaker modules for a class of graded Lie algebras and obtain a bijective correspondence between the set of isomorphism classes of Whittaker modules and the set…

Representation Theory · Mathematics 2009-03-04 Bin Wang

In this paper, we introduce an algebra structure denoted by InvDer algebra whose which we twist an algebra thanks to an invertible derivation, where its inverse is also a derivation. We define InvDer Lie algebras, InvDer associated…

Rings and Algebras · Mathematics 2023-06-30 Imed Basdouri , Esmael Peyghan , Mohamed Amin Sadraoui

We introduce dg Lie algebras controlling the deformations of vertex algebras and vertex Poisson algebras, utilizing the notion of operadic dg Lie algebra and the theory of chiral algebra. In terms of those dg Lie algebras, we formulate the…

Quantum Algebra · Mathematics 2016-07-08 Shintarou Yanagida

This is a companion article to my papers on Kazhdan-Lusztig polynomials and character formulae for the Lie superalgebras gl(m|n) (much revised!) and q(n). The goal is to develop the general theory of tilting modules for Lie superalgebras,…

Representation Theory · Mathematics 2007-05-23 Jonathan Brundan

We define vertex cover algebras for weighted simplicial multicomplexes and prove basics properties of them. Also, we describe these algebras for multicomplexes which have only one maximal facet and we prove that they are finitely generated.

Commutative Algebra · Mathematics 2016-03-29 Mircea Cimpoeas

The goal of this paper is to consider some relations between varieties of representations of groups and varieties of associative algebras. The main emphasis is put on the varieties of representations of groups induced by the varieties of…

Representation Theory · Mathematics 2009-07-21 Elena Aladova , Boris Plotkin

We translate the construction of the chiral operad by Beilinson and Drinfeld to the purely algebraic language of vertex algebras. Consequently, the general construction of a cohomology complex associated to a linear operad produces a vertex…

Representation Theory · Mathematics 2024-01-03 Bojko Bakalov , Alberto De Sole , Reimundo Heluani , Victor G. Kac

We introduce the notion of a genus and its mass for vertex algebras. For lattice vertex algebras, their genera are the same as those of lattices, which plays an important role in the classification of lattices. We derive a formula relating…

Quantum Algebra · Mathematics 2021-03-30 Yuto Moriwaki

Higher structures - infinity algebras and other objects up to homotopy, categorified algebras, `oidified' concepts, operads, higher categories, higher Lie theory, higher gauge theory... - are currently intensively investigated in…

Category Theory · Mathematics 2015-01-13 David Khudaverdyan

We construct bundles of modules of vertex operator algebras, and prove the rigidity and vanishing theorem for the Dirac operator on loop space twisted by such bundles. This result generalizes many previous results.

Differential Geometry · Mathematics 2014-10-01 Chongying Dong , Kefeng Liu , Xiaonan Ma

We present a graded-geometric approach to modular classes of Lie algebroids and their generalizations, introducing in this setting an idea of relative modular class of a Dirac structure for a certain type of Courant algebroids, called…

Differential Geometry · Mathematics 2017-01-17 Janusz Grabowski

In this paper, we first give the definiton of a vertex superalgebroid. Then we construct a family of vertex superalgebras associated to vertex superalgebroids. As a main result, we find a sufficient and necessary condition that this vertex…

Rings and Algebras · Mathematics 2019-04-15 Ming Li

The Lie algebras over the algebra of dual numbers are introduced and investigated.

Rings and Algebras · Mathematics 2017-01-24 Vladimir Gorbatsevich

We introduce two $K$-theories, one for vector bundles whose fibers are modules of vertex operator algebras, another for vector bundles whose fibers are modules of associative algebras. We verify the cohomological properties of these…

Differential Geometry · Mathematics 2007-05-23 Chongying Dong , Kefeng Liu , Xiaonan Ma , Jian Zhou

In this article, we study module categries of simple current extensions of vertex operator algebras. Under certain assumptions, we show that every module for a rational vertex operator algebra be lifted to a twisted module for an extended…

Quantum Algebra · Mathematics 2007-05-23 Hiroshi Yamauchi

We give some properties of cosymplectic Lie algebras, we show, in particular, that they support a left symmetric product. We also give some constructions of cosymplectic Lie algebras, as well as a classification in three and…

Symplectic Geometry · Mathematics 2022-06-10 S. El bourkadi , M. W. Mansouri

We introduce a category B of bounded modules for the toroidal Lie algebras and study irreducible modules in B. We show that one of the irreducible modules in this category, L(T_0), admits a structure of a vertex operator algebra. We prove…

Representation Theory · Mathematics 2009-10-13 Yuly Billig

We derive a formula for the the modular class of a Lie algebroid with a regular twisted Poisson structure in terms of a canonical Lie algebroid representation of the image of the Poisson map. We use this formula to compute the modular…

Symplectic Geometry · Mathematics 2012-12-05 Yvette Kosmann-Schwarzbach , Milen Yakimov