Document Type

Article

Publication Date

2020

Publication Title

Publicationes Mathematicae

Abstract

In this paper, we introduce the notion of a Lie-derivation. This concept generalizes derivations for non-Lie Leibniz algebras. We study these Lie-derivations in the case where their image is contained in the Lie-center, and call them Lie-central derivations. We provide a characterization of Lie-stem Leibniz algebras by their Lie-central derivations, and prove several properties of the Lie algebra of Lie-central derivations for Lie-nilpotent Leibniz algebras of class 2. We also introduce ID∗-Lie-derivations. An ID∗-Lie-derivation of a Leibniz algebra g is a Lie-derivation of g in which the image is contained in the second term of the lower Lie-central series of g, and which vanishes on Lie-central elements. We provide an upper bound for the dimension of the Lie algebra IDLie∗ (g) of ID∗-Lie-derivation of g, and prove that the sets IDLie∗ (g) and IDLie∗ (q) are isomorphic for any two Lie-isoclinic Leibniz algebras g and q.

Department

Mathematics

Volume Number

97

Issue Number

1

First Page

217

Last Page

239

Comments

© 2020 University of Debrecen, Institute of Mathematics. All rights reserved.

DOI

10.5486/PMD.2020.8810

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