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A finite W-algebra is an associative algebra constructed from a semisimple Lie algebra and its nilpotent element. In this survey we review recent developments in the representation theory of W-algebras. We emphasize various interactions…

Representation Theory · Mathematics 2010-03-31 Ivan Losev

We study the capability property of Leibniz algebras via the non-abelian exterior product.

K-Theory and Homology · Mathematics 2019-01-29 Emzar Khmaladze , Revaz Kurdiani , Manuel Ladra

In this paper, the structure of the second relative homology and the relative stem cover of the direct sum of two pairs of Leibniz algebras are determined by means of the non-abelian tensor product of Leibniz algebras. We also characterize…

Rings and Algebras · Mathematics 2021-04-27 Seyedeh Narges Hosseini , Behrouz Edalatzadeh , Ali Reza Salemkar

Let $A$ be an associative algebra over a field of characteristic $\neq 2$ that is generated by a finite collection of nilpotent elements. We prove that all Lie derived powers of $A$ are finitely generated Lie algebras.

Rings and Algebras · Mathematics 2017-12-21 Adel Alahmadi , Hamed Alsulami

We consider the structure of groups and algebras that can be represented as automorphisms or derivations of distributive products -- which includes nonassociative rings, modules, forms, and commutation of groups and nonassociative loops. In…

Group Theory · Mathematics 2020-11-23 James B. Wilson

We prove that a finitely generated Lie algebra $L$ such that (i) every commutator in generators is ad-nilpotent, and (ii) $ L$ satisfies a polynomial identity, is nilpotent. As a corollary we get that a finitely generated residually-$p$…

Rings and Algebras · Mathematics 2017-08-07 Efim Zelmanov

In this article we prove that there exists a Dixmier map for nilpotent super Lie algebras. In other words, if we denote by Prim(U(g)) the set of (graded) primitive ideals of the enveloping algebra U(g) of g and Ad_0 the adjoint group of…

Representation Theory · Mathematics 2011-04-20 Estanislao Herscovich

Let A be an associative algebra of arbitrary dimension over a field F and G a finite soluble group of automorphisms of A oforder n, prime to the characteristic of F. We prove that if the fixed-point subalgebra of A under the action of G…

Rings and Algebras · Mathematics 2017-11-28 Makarenko Natalia

We give a full classification of 6-dimensional nilpotent Lie algebras over an arbitrary field, including fields that are not algebraically closed and fields of characteristic~2. To achieve the classification we use the action of the…

Rings and Algebras · Mathematics 2020-06-26 Serena Cicalo , Willem A de Graaf , Csaba Schneider

We state criteria for a nilpotent Lie algebra $\g$ to admit an invariant metric. We use that $\g$ possesses two canonical abelian ideals $\ide(\g) \subset \mathfrak{J}(\g)$ to decompose the underlying vector space of $\g$ and then we state…

Rings and Algebras · Mathematics 2024-09-16 R. García-Delgado

We review the known results about characteristically nilpotent complex Lie algebras, as well as we comment recent developements in the theory.

Rings and Algebras · Mathematics 2007-05-23 Jose Maria Ancochea , Otto Rutwig Campoamor

We investigate almost inner derivations of some finite-dimensional nilpotent Leibniz algebras. We show the existence of almost inner derivations of Leibniz filiform non-Lie algebras differing from inner derivations, we also show that the…

Rings and Algebras · Mathematics 2020-10-07 J. K. Adashev , T. K. Kurbanbaev

For a semisimple Lie algebra over the complex numbers, Dynkin (1952) developed an algorithm to classify the regular semisimple subalgebras, up to conjugacy by the inner automorphism group. For a graded semisimple Lie algebra over the…

Representation Theory · Mathematics 2014-07-30 H. Dietrich , Paolo Faccin , Willem A. de Graaf

In this paper we study some affine structures on nilpotent Lie algebras endowed with a contact form. These affine structures are constructed from an affine structure on a symplectic Lie algebra by a central extension.

Rings and Algebras · Mathematics 2007-05-23 Elisabeth Remm

We show that two cohomological properties of semisimple Lie algebras also hold for Filippov (n-Lie) algebras, namely, that semisimple n-Lie algebras do not admit non-trivial central extensions and that they are rigid i.e., cannot be…

Mathematical Physics · Physics 2009-07-22 Jose A. de Azcarraga , J. M Izquierdo

From the viewpoint of semi-abelian homology, some recent results on homology of Leibniz n-algebras can be explained categorically. In parallel with these results, we develop an analogous theory for Lie n-algebras. We also consider the…

Algebraic Topology · Mathematics 2011-03-16 Jose Manuel Casas , Emzar Khmaladze , Manuel Ladra , Tim Van der Linden

We construct all solvable Lie algebras with a specific n-dimensional nilradical n_(n,2) (of degree of nilpotency (n-1) and with an (n-2)-dimensional maximal Abelian ideal). We find that for given n such a solvable algebra is unique up to…

Mathematical Physics · Physics 2009-02-12 Libor Snobl , Pavel Winternitz

We prove that the classical $W$-algebra associated to a nilpotent orbit in a simple Lie-algebra can be constructed by preforming bihamiltonian, Drinfeld-Sokolov or Dirac reductions. We conclude that the classical $W$-algebra depends only on…

Differential Geometry · Mathematics 2014-04-02 Yassir Dinar

In this paper we show that every finite-dimensional Zinbiel algebra over an arbitrary field is nilpotent, extending a previous result by other authors that they are solvable.

Rings and Algebras · Mathematics 2022-02-25 David A. Towers

A Souslin algebra is a complete Boolean algebra whose main features are ruled by a tight combination of an antichain condition with an infinite distributive law. The present article divides into two parts. In the first part a representation…

Logic · Mathematics 2009-04-02 Gido Scharfenberger-Fabian