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With this paper we start a programme aiming at connecting two vast scientific areas: Jordan algebras and representation theory. Within representation theory, we focus on non-compact, real forms of semisimple Lie algebras and groups as well…

Representation Theory · Mathematics 2020-01-14 Vladimir Dobrev , Alessio Marrani

We show that a differential algebraic group can be filtered by a finite subnormal series of differential algebraic groups such that successive quotients are almost simple, that is have no normal subgroups of the same type. We give a…

Classical Analysis and ODEs · Mathematics 2010-10-11 Phyllis J. Cassidy , Michael F. Singer

The classification, up to isomorphism, of two-dimensional (not necessarily commutative) Jordan algebras over algebraically closed fields and $\mathbb{R}$ is presented in terms of their matrices of structure constants.

Rings and Algebras · Mathematics 2018-12-10 H. Ahmed , U. Bekbaev , I. Rakhimov

For any positive integer $n$, $n$-derived-simple derived discrete algebras are classified up to derived equivalence. Furthermore, the Jordan-H\"older theorems for all kinds of derived categories of derived discrete algebras are obtained.

Representation Theory · Mathematics 2016-06-28 Yongyun Qin

The notion of an anti-commutative (resp. commutative) rigid superalgebra is a natural generalisation of the notion of a Lie (resp. Jordan) superalgebra. Intuitively rigidity means that small deformations of the product under the structural…

Quantum Algebra · Mathematics 2014-01-22 Nicoletta Cantarini , Victor G. Kac

We described $\delta$-derivations and $\delta$-superderivations of simple Jordan superalgebra <<KKM Double>> (also known as superalgebra of Jordan brackets) and unital simple finite-dimensional Jordan superalgebras over algebraic closed…

Rings and Algebras · Mathematics 2020-04-03 Ivan Kaygorodov , Victor N. Zhelyabin

A complete classifications of two-dimensional general, commutative, commutative Jordan, division and evolution real algebras are given. In the case of evolution algebras their groups of automorphisms and derivation algebras are described as…

Rings and Algebras · Mathematics 2018-12-04 U. Bekbaev

We construct a basis of free unital generalized Poisson superalgebras and a basis of free unital superalgebras of Jordan brackets. Also, we prove the analogue of Farkas' Theorem for PI unital generalized Poisson algebras and PI unital…

Rings and Algebras · Mathematics 2020-04-03 Ivan Kaygorodov

We develop structure theory of finite Lie conformal superalgebras.

Quantum Algebra · Mathematics 2007-05-23 Davide Fattori , Victor G. Kac , Alexander Retakh

We classify, up to equivalence, all finite-dimensional simple graded division algebras over the field of real numbers. The grading group is any finite abelian group.

Rings and Algebras · Mathematics 2015-06-09 Yuri Bahturin , Mikhail Zaicev

In this paper, we classify four-dimensional Jordan algebras over an algebraically closed field of characteristic different of two. We establish the list of 73 non-isomorphic Jordan algebras.

Rings and Algebras · Mathematics 2016-02-22 María Eugenia Martin

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

In this paper, we mainly study the derivation algebras of semi-simple Jordan algebras over a field of characteristic $0$ and give sufficient and necessary conditions that the derivation algebras of them are simple. As an application, we…

Rings and Algebras · Mathematics 2019-06-12 Chenrui Yao , Yao Ma , Liangyun Chen

The algebraic and geometric classifications of complex $3$-dimensional noncommutative Jordan superalgebras are given. In particular, we obtain the algebraic and geometric classification of $3$-dimensional Kokoris and standard superalgebras,…

Rings and Algebras · Mathematics 2026-02-17 Hani Abdelwahab , Ivan Kaygorodov , Abror Khudoyberdiyev

In this paper, we study the class of Jordan dialgebras. We develop an approach for reducing problems on dialgebras to the case of ordinary algebras. It is shown that straightforward generalizations of the classical Cohn's, Shirshov's, and…

Rings and Algebras · Mathematics 2011-05-16 Vasily Voronin

In this paper, we compute all possible Jordan types of linear forms $\ell$ in any full Perazzo algebra $A$. In some cases we are also able to compute the corresponding Jordan degree type, which is a finer invariant.

Commutative Algebra · Mathematics 2025-11-03 Pedro Macias Marques , Rosa M. Miró-Roig , Josep Pérez

A Jordan algebra J is said to be pseudo-euclidean if J is endowed with an associative non-degenerate symmetric bilinear form B. B is said an associative scalar product on J. First, we provide a description of the pseudo-euclidean Jordan…

Rings and Algebras · Mathematics 2008-11-25 Amir Baklouti , Said Benayadi

We extend the loop algebra construction for algebras graded by abelian groups to study graded-simple algebras over the field of real numbers (or any real closed field). As an application, we classify up to isomorphism the graded-simple…

Rings and Algebras · Mathematics 2018-07-03 Yuri Bahturin , Mikhail Kochetov

We study linear spaces of symmetric matrices whose reciprocal is also a linear space. These are Jordan algebras. We classify such algebras in low dimensions, and we study the associated Jordan loci in the Grassmannian.

Rings and Algebras · Mathematics 2021-10-19 Arthur Bik , Henrik Eisenmann , Bernd Sturmfels

We apply the quaternionic Jordan form to classify the hypercomplex nilpotent almost abelian Lie algebras in all dimensions and to carry out the complete classification of 12-dimensional hypercomplex almost abelian Lie algebras. Moreover, we…

Differential Geometry · Mathematics 2024-11-04 Adrián Andrada , María Laura Barberis