Lie σ-centralizers on algebras when σ is an automorphism

Let [Formula: see text] be an algebra over a unital commutative ring [Formula: see text], and let [Formula: see text] be an algebraic homomorphism. In this paper, we consider a linear map [Formula: see text] that satisfies one of the following conditions: [Formula: see text] [Formula: see text] or [Formula: see text] where [Formula: see text] is the Lie product in [Formula: see text]. We characterize linear maps [Formula: see text] under automorphisms [Formula: see text] by reducing to the case [Formula: see text] (the identity map on [Formula: see text]). Using these equivalences, we further characterize the linear maps [Formula: see text] on generalized matrix algebras; triangular algebras; von Neumann algebras; standard operator algebras and nest algebras for every automorphism [Formula: see text] on these algebras. We also obtain similar results for Lie [Formula: see text]-centralizers. Some of our results generalize some of the previous results.

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Publication Details

Journal
Asian-European Journal of Mathematics
Published
2026-01-14
DOI
https://doi.org/10.1142/s1793557126500063
Primary Topic
Advanced Topics in Algebra
Type
article
Field-Weighted Citation Impact
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article

Lie σ-centralizers on algebras when σ is an automorphism

Behrooz Fadaee, Hoger Ghahramani, Heydar Moradi
Asian-European Journal of Mathematics
Advanced Topics in Algebra
article

Lie σ-centralizers on algebras when σ is an automorphism

Behrooz Fadaee, Hoger Ghahramani, Heydar Moradi
article en

Abstract

Let [Formula: see text] be an algebra over a unital commutative ring [Formula: see text], and let [Formula: see text] be an algebraic homomorphism. In this paper, we consider a linear map [Formula: see text] that satisfies one of the following conditions: [Formula: see text] [Formula: see text] or [Formula: see text] where [Formula: see text] is the Lie product in [Formula: see text]. We characterize linear maps [Formula: see text] under automorphisms [Formula: see text] by reducing to the case [Formula: see text] (the identity map on [Formula: see text]). Using these equivalences, we further characterize the linear maps [Formula: see text] on generalized matrix algebras; triangular algebras; von Neumann algebras; standard operator algebras and nest algebras for every automorphism [Formula: see text] on these algebras. We also obtain similar results for Lie [Formula: see text]-centralizers. Some of our results generalize some of the previous results.

Asian-European Journal of Mathematics
University of Kurdistan (IR)
Openalex Percentile: Top 85%
Advanced Topics in Algebra
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