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Article

Symmetric Tensors in Different Perspectives †

by
Anna Kimaczyńska
Faculty of Mathematics and Computer Science, University of Łódź, Banacha 22, 90-238 Łódź, Poland
This paper is an extended version of our paper published in Kimaczyńska, A. The grad div operator. In Proceedings of the (Hyper) Complex Seminar 2023 in memoriam of Professor Julian Ławrynowicz, Online, 9–15 July 2023. Available online: https://www.youtube.com/watch?v=ZbG_YPw3i0k (accessed on 14 November 2025).
Symmetry 2026, 18(1), 146; https://doi.org/10.3390/sym18010146 (registering DOI)
Submission received: 21 November 2025 / Revised: 31 December 2025 / Accepted: 6 January 2026 / Published: 12 January 2026
(This article belongs to the Section Mathematics)

Abstract

The main subject of this paper is the theme of differential operators defined for symmetric tensors on a Riemannian manifold and introduced in several new contexts. Some examples for 2-tensors are given and then the grad div operator for symmetric vector forms is defined. A few original operators in Rn related with grad div operator are discussed. Finally, important notions such as the Kenmotsu manifold, with some interesting examples, are also presented.
Keywords: commutator of an operator; divergence; gradient; grad div operator; Kenmotsu manifold; Riemannian manifold; symmetric derivative; symmetric tensor commutator of an operator; divergence; gradient; grad div operator; Kenmotsu manifold; Riemannian manifold; symmetric derivative; symmetric tensor

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MDPI and ACS Style

Kimaczyńska, A. Symmetric Tensors in Different Perspectives. Symmetry 2026, 18, 146. https://doi.org/10.3390/sym18010146

AMA Style

Kimaczyńska A. Symmetric Tensors in Different Perspectives. Symmetry. 2026; 18(1):146. https://doi.org/10.3390/sym18010146

Chicago/Turabian Style

Kimaczyńska, Anna. 2026. "Symmetric Tensors in Different Perspectives" Symmetry 18, no. 1: 146. https://doi.org/10.3390/sym18010146

APA Style

Kimaczyńska, A. (2026). Symmetric Tensors in Different Perspectives. Symmetry, 18(1), 146. https://doi.org/10.3390/sym18010146

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