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We give tables of noncompact real forms of maximal reductive subalgebras of complex simple Lie algebras of rank up to 8. These were obtained by computational methods that we briefly describe. We also discuss applications in theoretical…

Rings and Algebras · Mathematics 2020-05-20 Willem A. de Graaf , Alessio Marrani

We classify, up to isomorphism, the 2-dimensional algebras over a field K. We focuse also on the case of characteristic 2, identifying the matrices of GL(2,F_2) with the elements of the symmetric group S_3. The classification is then given…

Rings and Algebras · Mathematics 2017-07-03 Elisabeth Remm , Michel Goze

In this paper, we study the moduli space of $1|1$-dimensional complex associative algebras. We give a complete calculation of the cohomology of every element in the moduli space, as well as compute their versal deformations.

We describe isomorphisms of groups of several periodic infinite matrices and isomorphisms of groups of invertible elements of unital locally matrix algebras.

Rings and Algebras · Mathematics 2023-01-18 Oksana Bezushchak

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 give an algebraic classification of complex $4$-dimensional nilpotent $\mathfrak{CD}$-algebras.

Rings and Algebras · Mathematics 2021-01-20 Ivan Kaygorodov , Mykola Khrypchenko

We classify all two-dimensional simple algebras (which may be non-associative) over an algebraically closed field. For each two-dimensional algebra $\mathcal{A}$, we describe a minimal (with respect to inclusion) generating set for the…

Rings and Algebras · Mathematics 2025-04-21 María Alejandra Alvarez , Artem Lopatin

We begin a systematic study of unitary representations of minimal $W$-algebras. In particular, we classify unitary minimal $W$-algebras and make substantial progress in classification of their unitary irreducible highest weight modules. We…

Representation Theory · Mathematics 2023-07-03 Victor G. Kac , Pierluigi Möseneder Frajria , Paolo Papi

We classify strongly homotopy Lie algebras - also called L-infinity algebras - of one even and two odd dimensions, which are related to $2|1$-dimensional $Z_2$-graded Lie algebras. What makes this case interesting is that there are many…

Quantum Algebra · Mathematics 2007-05-23 Alice Fialowski , Michael Penkava

The automorphisms of all 4-dimensional, real Lie Algebras are presented in a comprehensive way. Their action on the space of $4\times 4$, real, symmetric and positive definite, matrices, defines equivalence classes which are used for the…

General Relativity and Quantum Cosmology · Physics 2008-11-26 T. Christodoulakis , G. O. Papadopoulos , A. Dimakis

This article is devoted to the classification of anti-dendriform algebras that are associated with associativity. They are characterized as algebras with two operations whose sum is associative. In particular, the paper is devoted to…

Rings and Algebras · Mathematics 2024-04-02 K. Abdurasulov , J. Adashev , Z. Normatov , Sh. Solijonova

We obtain a complete classification of minimal simple unitary $W$-algebras.

Representation Theory · Mathematics 2024-08-05 Victor G. Kac , Pierluigi Möseneder Frajria , Paolo Papi

The principal observation of the present paper is that an inner isotopy (i.e. a principal isotopy defined by an algebra endomorphism) is a very helpful instrument in constructing and studying interesting classes of nonassociative algebras.…

Rings and Algebras · Mathematics 2024-09-11 Vladimir G. Tkachev

The simple symplectic triple systems over the real numbers are classified up to isomorphism, and linear models of all of them are provided. Besides the split cases, one for each complex simple Lie algebra, there are two kinds of non-split…

Rings and Algebras · Mathematics 2022-05-16 Cristina Draper , Alberto Elduque

We classify open maximal subalgebras of all infinite-dimensional linearly compact simple Lie superalgebras. This is applied to the classification of infinite-dimensional Lie superalgebras of vector fields, acting transitively and…

Quantum Algebra · Mathematics 2014-01-17 Nicoletta Cantarini , Victor Kac

This paper contains a complete description of classes of the unitary equivalence of the admissible representations of infinite-dimensional classic matrix groups paper.

funct-an · Mathematics 2008-02-03 N. I. Nessonov

An endo-commutative algebra is a nonassociative algebra in which the square mapping preserves multiplication. In this paper, we give a complete classification of 2-dimensional endo-commutative straight algebras of rank one over an arbitrary…

Rings and Algebras · Mathematics 2023-05-30 Sin-Ei Takahasi , Kiyoshi Shirayanagi , Makoto Tsukada

We determine all two-dimensional Lie subalgebras of the centreless Virasoro algebra and complete the characterization of all finite dimensional Lie subalgebras of the complex Virasoro algebra.

Rings and Algebras · Mathematics 2014-11-18 Zhihua Chang

Leibniz algebras ${\mathcal E}_n$ were introduced as algebraic structure underlying U-duality. Algebras ${\mathcal E}_3$ derived from Bianchi three-dimensional Lie algebras are classified here. Two types of algebras are obtained:…

High Energy Physics - Theory · Physics 2020-07-15 Ladislav Hlavaty

We provide a classification, up to isomorphism, of four-dimensional ternary Leibniz algebras over an algebraically closed field of characteristic zero. For each non-abelian algebra in the classification, we explicitly determine its centroid…

Rings and Algebras · Mathematics 2026-02-26 Ahmed Zahari Abdou Damdji