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It is shown that any Lie affgebra, that is an algebraic system consisting of an affine space together with a bi-affine bracket satisfying affine versions of the antisymmetry and Jacobi identity, is isomorphic to a Lie algebra together with…

Rings and Algebras · Mathematics 2024-09-04 Ryszard R. Andruszkiewicz , Tomasz Brzeziński , Krzysztof Radziszewski

We investigate a new class of Lie algebras, which are tame locally extended affine Lie algebras of nullity 1. It is an infinite-rank analog of affine Lie algebras, and their centerless cores are a local version of loop algebras. Such…

Rings and Algebras · Mathematics 2015-05-25 Jun Morita , Yoji Yoshii

This paper explores the properties of multiplicative Lie algebra structures on a nilpotent group of class $2$. We also present a method for determining a multiplicative Lie algebra structure on a group that serves as an extension of one Lie…

Group Theory · Mathematics 2024-09-26 Deepak Pal , Amit Kumar , Sumit Kumar Upadhyay

These notes are devoted to the multiple generalization of a Lie algebra introduced by A.M.Vinogradov and M.M.Vinogradov. We compare definitions of such algebras in the usual and invariant case. Furthermore, we show that there are no simple…

Representation Theory · Mathematics 2015-09-15 Elizaveta Vishnyakova

The notion of a generalized Lie bialgebroid (a generalization of the notion of a Lie bialgebroid) is introduced in such a way that a Jacobi manifold has associated a canonical generalized Lie bialgebroid. As a kind of converse, we prove…

Differential Geometry · Mathematics 2009-10-31 David Iglesias , Juan C. Marrero

We analyse infinitesimal deformations of morphisms of locally free sheaves on a smooth projective variety $X$ over an algebraically closed field of characteristic zero. In particular, we describe a differential graded Lie algebra…

Algebraic Geometry · Mathematics 2025-03-05 Donatella Iacono , Elena Martinengo

The indecomposable solvable Lie algebras with graded nilradical of maximal nilindex and a Heisenberg subalgebra of codimension one are analyzed, and their generalized Casimir invariants calculated. It is shown that rank one solvable…

Mathematical Physics · Physics 2009-11-11 J M Ancochea , R Campoamor-Stursberg , L Garcia Vergnolle

We report on recent work concerning a new type of generalised Kac-Moody algebras based on the spaces of differentiable mappings from compact manifolds or homogeneous spaces onto compact Lie groups.

Mathematical Physics · Physics 2022-12-19 Rutwig Campoamor-Stursberg , Marc de Montigny , Michel Rausch de Traubenberg

Decomposition classes provide a way of partitioning the Lie algebras of an algebraic group into equivalence classes based on the Jordan decomposition. In this paper, we investigate the decomposition classes of the Lie algebras of connected…

Representation Theory · Mathematics 2025-11-04 Joel Summerfield

A real Lie algebra is said to be characteristically solvable if its derivation algebra is solvable. We explicitly determine the moduli space of left-invariant metrics, up to isometric automorphism, for $6$-dimensional nilmanifolds whose…

Differential Geometry · Mathematics 2025-03-07 Isolda Cardoso , Ana Cosgaya , Silvio Reggiani

We classify the automorphic Lie algebras of equivariant maps from a complex torus to $\mathfrak{sl}_2(\mathbb{C})$. For each case we compute a basis in a normal form. The automorphic Lie algebras correspond precisely to two disjoint…

Rings and Algebras · Mathematics 2024-11-20 Vincent Knibbeler , Sara Lombardo , Casper Oelen

We investigate Atiyah algebroids, i.e. the infinitesimal objects of principal bundles, from the viewpoint of Lie algebraic approach to space. First we show that if the Lie algebras of smooth sections of two Atiyah algebroids are isomorphic,…

Differential Geometry · Mathematics 2009-05-11 Janusz Grabowski , Alexei Kotov , Norbert Poncin

A Lie 2-algebra is a "categorified" version of a Lie algebra: that is, a category equipped with structures analogous those of a Lie algebra, for which the usual laws hold up to isomorphism. In the classical mechanics of point particles, the…

Mathematical Physics · Physics 2009-12-08 John C. Baez , Alexander E. Hoffnung , Christopher L. Rogers

This paper introduces Lie groups in degenerate geometric (Clifford) algebras that preserve four fundamental subspaces determined by the grade involution and reversion under the adjoint and twisted adjoint representations. We prove that…

Rings and Algebras · Mathematics 2026-01-13 E. R. Filimoshina , D. S. Shirokov

We study nilmanifolds admitting Anosov automorphisms by applying elementary properties of algebraic units in number fields to the associated Anosov Lie algebras. We identify obstructions to the existence of Anosov Lie algebras. The case of…

Dynamical Systems · Mathematics 2010-10-29 Meera G. Mainkar

A pro-Lie group is a projective limit of a family of finite-dimensional Lie groups. In this note we show that a pro-Lie group $G$ is a Lie group in the sense that its topology is compatible with a smooth manifold structure for which the…

Group Theory · Mathematics 2007-05-23 K. H. Hofmann , K. -H. Neeb

We prove that every $2$-local automorphism on a finite-dimensional semi-simple Lie algebra $\mathcal{L}$ over an algebraically closed field of characteristic zero is an automorphism. We also show that each finite-dimensional nilpotent Lie…

Rings and Algebras · Mathematics 2016-02-18 Shavkat Ayupov , Karimbergen Kudaybergenov

A generalized complex manifold is locally gauge-equivalent to the product of a holomorphic Poisson manifold with a real symplectic manifold, but in possibly many different ways. In this paper we show that the isomorphism class of the…

Symplectic Geometry · Mathematics 2017-12-06 Michael Bailey , Marco Gualtieri

This contribution is the first in a series of three: it reports on the construction of (a fine sheaf of) diffeomorphism invariant Colombeau algebras on open sets of Eucildean space, which completes earlier approaches. Part II and III will…

Functional Analysis · Mathematics 2007-05-23 Roland Steinbauer

The paper naturally continues series of works on identical relations of group rings, enveloping algebras, and other related algebraic structures. Let $L$ be a Lie algebra over a field of characteristic $p>0$. Consider its symmetric algebra…

Rings and Algebras · Mathematics 2017-07-24 Ilana Zuila Monteiro Alves , Victor Petrogradsky