arXiv subjects

Atef Hajjaji

Publications and source records attributed to Atef Hajjaji.

3 recordsLinked to original sources

arXiv2025

On L-dendriform conformal algebras

In this paper, we introduce the concept of L-dendriform conformal algebras, which arise naturally from the study of $\mathcal{O}$-operators on left-symmetric conformal algebras and solutions to the conformal $S$-equation. These algebras extend the classical notions of dendriform and left-symmetric conformal algebras, providing a unified algebraic framework for understanding compatible structures in conformal algebra theory. We establish fundamental properties of L-dendriform conformal algebras, explore their relationships with $\mathcal{O}$ -operators, Rota-Baxter operators, and Nijenhuis operators, and demonstrate their connections to dendriform and quadri conformal algebras. Additionally, we investigate compatible $\mathcal{O}$-operators and their induced compatible L-dendriform conformal algebra structures. Our results generalize and unify several existing algebraic structures in conformal algebra theory, offering new insights into their interplay and applications.

math.RA↗

arXiv2021

On $n$-pre-Lie algebras and dendrification of $n$-Lie algebras

The main purpose of this paper is to introduce the notion of $n$-L-dendriform algebra which can be seen as a dendrification of $n$-pre-Lie algebras by means of $\mathcal{O}$-operators. We investigate the representation theory of $n$-pre-Lie algebras and provide some related constructions. Furthermore, we introduce the notion of phase space of a $n$-Lie algebra and show that a $n$-Lie algebra has a phase space if and only if it is sub-adjacent to a $n$-pre-Lie algebra. Moreover, we present a procedure to construct $(n + 1)$-pre-Lie algebras from $n$-pre-Lie algebras equipped with a generalized trace function.

math.RA↗

arXiv2021

Twisted O-operators on 3-Lie algebras and 3-NS-Lie algebras

The purpose of this paper is to introduce twisted $\mathcal{O}$-operators on $3$-Lie algebras. We define a cohomology of a twisted $\mathcal{O}$-operator $T$ as the Chevalley-Eilenberg cohomology of a certain $3$-Lie algebra induced by $T$ with coefficients in a suitable representation. Then we consider infinitesimal and formal deformations of twisted $\mathcal{O}$-operators from cohomological points of view. Furthermore, we introduce and study $3$-NS-Lie-algebras as the underlying structure of twisted $\mathcal{O}$-operators on $3$-Lie algebras. Finally, we investigate twisted $\mathcal{O}$-operators on $3$-Lie algebras induced by Lie algebras.

math.RT↗