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We study commutative post-Lie algebras $(${\rm CPA}s$)$ from an algebraic point of view. Firstly, we find some new identities in {\rm CPA}, which shows that the commutative multiplication gives a medial and derived commutative associative…

Rings and Algebras · Mathematics 2026-02-03 Hani Abdelwahab , Kobiljon Abdurasulov , Ivan Kaygorodov

We propose the study and description of the structure of complex Lie algebras with nilradical a nilpotent Lie algebra of type 2 by using sl2(C)-representation theory. Our results will be applied to review the classification given in [1] (J.…

Rings and Algebras · Mathematics 2016-11-26 Pilar Benito , Daniel de-la-Concepción

The geometric classifications of complex $4$-dimensional nilpotent Lie-Yamaguti algebras, $4$-dimensional nilpotent Bol algebras, and $4$-dimensional nilpotent compatible Lie algebras are given.

Rings and Algebras · Mathematics 2025-08-20 Kobiljon Abdurasulov , Abror Khudoyberdiyev , Feruza Toshtemirova

The classification of complex of real finite dimensional Lie algebras which are not semi simple is still in its early stages. For example the nilpotent Lie algebras are classified only up to the dimension 7. Moreover, to recognize a given…

Rings and Algebras · Mathematics 2017-11-29 Michel Goze , Elisabeth Remm

In this paper, we investigate nilpotent Lie algebras $ L $ of nilpotency class $3 $ and provide a complete classification of those satisfying $ \dim L^2 = 3 $ and $Z(L) = L^3 \cong A(2). $ Furthermore, we explicitly characterize the…

Group Theory · Mathematics 2025-11-25 Saboura Yousefi , Azam Kaheni , Farangis Johari

Noncommutative domain algebras are noncommutative analogues of the algebras of holomorphic functions on domains of $\C^n$ defined by holomorphic polynomials, and they generalize the noncommutative Hardy algebras. We present here a complete…

Operator Algebras · Mathematics 2012-12-18 Alvaro Arias , Frederic Latremoliere

This paper presents a classification of 7-dimensional real and complex indecomposable solvable Lie algebras having some 5-dimensional nilradicals. Afterwards, we combine our results with those of Rubin and Winternitz (1993), Ndogmo and…

Rings and Algebras · Mathematics 2021-07-09 Vu A. Le , Tuan A. Nguyen , Tu T. C. Nguyen , Tuyen T. M. Nguyen , Thieu N. Vo

The paper is devoted to the description of the varieties of complex 5-dimensional nilpotent Jordan superalgebras. We find all representatives for the isomorphism classes, using the Jordan normal form, results of simultaneous matrix…

Rings and Algebras · Mathematics 2026-04-17 Isabel Hernández , Laiz Valim da Rocha , Rodrigo Lucas Rodrigues

In this paper we consider the problem of classifying the $(n-5)$-filiform Lie algebras. This is the first index for which infinite parametrized families appear, as can be seen in dimension $7.$ Moreover we obtain large families of…

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

The type and several invariant subspaces related to the upper annihilating series of finite-dimensional nilpotent evolution algebras are introduced. These invariants can be easily computed from any natural basis. Some families of nilpotent…

Rings and Algebras · Mathematics 2017-11-27 Alberto Elduque , Alicia Labra

This work is devoted to the classification of solvable Leibniz algebras with an abelian nilradical. We consider $k-1$ dimensional extension of $k$-dimensional abelian algebras and classify all $2k-1$-dimensional solvable Leibniz algebras…

Rings and Algebras · Mathematics 2018-08-21 R. K. Gaybullaev , A. Kh. Khudoyberdiyev , K. Pohl

In this paper we obtain the classification of $p$-nilpotent restricted Lie algebras of dimension at most four over a perfect field of characteristic p.

Rings and Algebras · Mathematics 2014-04-04 Csaba Schneider , Hamid Usefi

Moens proved that a finite-dimensional Lie algebra over field of characteristic zero is nilpotent if and only if it has an invertible Leibniz-derivation. In this article we prove the analogous results for finite-dimensional Malcev, Jordan,…

Rings and Algebras · Mathematics 2020-04-03 Ivan Kaygorodov , Yury Popov

We obtain several restrictions on the terms of the ascending central series of a nilpotent Lie algebra $\mathfrak g$ under the presence of a complex structure $J$. In particular, we find a bound for the dimension of the center of $\mathfrak…

Rings and Algebras · Mathematics 2019-06-05 A. Latorre , L. Ugarte , R. Villacampa

The present paper is devoted to the complete classification of $4$-dimensional complex Poisson algebras, taking into account a classification, up to isomorphism, of the complex commutative associative algebras of dimension $4$, as well as…

Representation Theory · Mathematics 2025-08-14 Hani Abdelwahab , José María Sánchez

We give the algebraic and geometric classification of complex four-dimensional Jordan superalgebras. In particular, we describe all irreducible components in the corresponding varieties.

Rings and Algebras · Mathematics 2025-10-09 Kobiljon Abdurasulov , Roman Lubkov , Azamat Saydaliyev

For each complex 8-dimensional filiform Lie algebra we find another non isomorphic Lie algebra that degenerates to it. Since this is already known for nilpotent Lie algebras of rank $\ge 1$, only the caracteristically nilpotent ones should…

Rings and Algebras · Mathematics 2013-08-22 Joan Felipe Herrera-Granada , Paulo Tirao

Decomposition algebras and axial decomposition algebras are classes of commutative nonassociative algebras which are generalizations of axial algebras. The classes decomposition algebras, axial decomposition al;gebras and non-primitive…

Rings and Algebras · Mathematics 2022-07-05 Takahiro Yabe

A compatible nilpotent Leibniz algebra is a vector space equipped with two multiplication structures that interact in a certain natural way. This article presents the classification of these algebras with dimensions less than four, as well…

Rings and Algebras · Mathematics 2025-04-29 Ahmed Zahari Abdou , Kol Béatrice Gamou , Ibrahima Bakayoko

In this paper we classify solvable Leibniz algebras whose nilradical is a null-filiform algebra. We extend the obtained classification to the case when the solvable Leibniz algebra is decomposed as a direct sum of its nilradical, which is a…

Rings and Algebras · Mathematics 2012-02-24 J. M. Casas , M. Ladra , B. A. Omirov , I. A. Karimjanov