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This paper completes the classification of seven-dimensional nilpotent Lie groups endowed with a left-invariant purely coclosed $\text{G}_2$-structure, initiated by the first-named author and collaborators. In this previous work, the…

Differential Geometry · Mathematics 2025-10-30 Giovanni Bazzoni , Giorgia Petracci

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

In this paper, we systematically investigate the nilpotentizer and nilpotent graph for a Lie superalgebra over the field of characteristic not equal to 2. First, we establish some fundamental properties of the nilpotentizer. Next, we show…

Rings and Algebras · Mathematics 2026-02-11 Baojin Zhang , Liming Tang

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

We introduce the product by generators of complex nilpotent Lie algebras, which is a commutative product obtained from a central extension of the direct sum of Lie algebras. We show that the product preserves also the characteristic…

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

Working over an arbitrary field of characteristic different from $2$, we extend the Skjelbred-Sund method to compatible Lie algebras and give a full classification of nilpotent compatible Lie algebras up to dimension $4$. In case the base…

Rings and Algebras · Mathematics 2024-11-11 Manuel Ladra , Bernardo Leite da Cunha , Samuel A. Lopes

It is the aim of this work to study product structures on four dimensional solvable Lie algebras. We determine all possible paracomplex structures and consider the case when one of the subalgebras is an ideal. These results are applied to…

Rings and Algebras · Mathematics 2010-12-23 A. Andrada , M. L. Barberis , I. Dotti , G. Ovando

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

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

In this paper, we first introduce the notion of a product structure on a $3$-Bihom-Lie algebra which is a Nijenhuis operator with some conditions. And we provide that a $3$-Bihom-Lie algebra has a product structure if and only if it is the…

Rings and Algebras · Mathematics 2021-01-05 Juan Li , Ying Hou , Liangyun Chen

Let (J,g) be a Hermitian structure on a compact nilmanifold M with invariant complex structure J and compatible metric g, which is not required to be invariant. We give classifications of 6-dimensional nilmanifolds M admitting strong…

Differential Geometry · Mathematics 2007-05-23 Luis Ugarte

In this paper, we give the explicit structure of $ \otimes^{3} H $ and $ \wedge^{3} H $ where $ H $ is a generalized Heisenberg Lie algebra of rank at most $ 2. $ Moreover, for a non-abelian nilpotent Lie algebra $ L, $ we obtain an upper…

Rings and Algebras · Mathematics 2021-05-21 Afsaneh Shamsaki , Peyman Niroomand

We consider finite-dimensional complex Lie algebras admitting a periodic derivation, i.e., a nonsingular derivation which has finite multiplicative order. We show that such Lie algebras are at most two-step nilpotent and give several…

Rings and Algebras · Mathematics 2011-08-18 D. Burde , W. Moens

We find a one-parameter family of non-isomorphic nilpotent Lie algebras $\mathfrak{g}_a$, with $a \in [0,\infty)$, of real dimension eight with (strongly non-nilpotent) complex structures. By restricting $a$ to take rational values, we…

Differential Geometry · Mathematics 2017-12-22 Adela Latorre , Luis Ugarte , Raquel Villacampa

We provide a self contained, elementary, and geometrically-flavored classification of $8$-dimensional $2$-step nilpotent Lie algebras over algebraically closed fields of characteristic $\ne 2,3$, using the algebro-geometric arguments from…

Rings and Algebras · Mathematics 2026-02-06 Giovanni Bazzoni , Juan Rojo

A finite dimensional filiform K-Lie algebra is a nilpotent Lie algebra g whose nil index is maximal, that is equal to dim g -1. We describe necessary and sufficient conditions for a filiform algebra over an algebraically closed field of…

Rings and Algebras · Mathematics 2018-06-21 Elisabeth Remm

A result of Barnea and Isaacs states that if $L$ is a finite dimensional nilpotent Lie algebra with exactly two distinct centralizer dimensions, then nilpotency class of $L$ is either $2$ or $3$. In this article, we classify all such finite…

Rings and Algebras · Mathematics 2024-04-04 Rijubrata Kundu , Tushar Kanta Naik , Anupam Singh

We give a classification of $5$- and $6$-dimensional complex one-generated nilpotent bicommutative algebras.

Rings and Algebras · Mathematics 2022-08-02 Ivan Kaygorodov , Pilar Páez-Guillán , Vasily Voronin

A real Lie algebra defines by extension of scalars a complex Lie algebra that is isomorphic to its Galois conjugate. In this paper, we are interested in the converse property: given a complex Lie algebra that is isomorphic to its conjugate,…

Algebraic Geometry · Mathematics 2026-04-09 Cyril Demarche

The purpose of this paper is to classify all $p$-nilpotent restricted Lie algebras of dimension 5 over perfect fields of characteristic $p\geq 5$. Our work builds upon the recent work of Schneider and Usefi on the classification of…

Rings and Algebras · Mathematics 2017-02-09 Iren Darijani , Hamid Usefi

We give the classification of $5$- and $6$-dimensional complex one-generated nilpotent assosymmetric algebras.

Rings and Algebras · Mathematics 2021-01-20 Ivan Kaygorodov , Farukh Mashurov