Research Article

Covector Fields which are Harmonic Maps in the Cotangent Bundle Equipped with the Horizontally Deformed Sasaki Metric

Volume: 18 Number: 2 June 30, 2026

Covector Fields which are Harmonic Maps in the Cotangent Bundle Equipped with the Horizontally Deformed Sasaki Metric

Abstract

In this paper, we investigate some harmonicity properties of a covector field in the cotangent bundle endowed with the horizontally deformed Sasaki metric, and then we establish necessary and sufficient conditions for a covector field to be a harmonic map (or harmonic covector field) concerning this metric. We also provide explicit examples of such harmonic covector fields to illustrate the theoretical results.

Keywords

Thanks

Dear Editor-in-Chief, Thank you for accepting the submission of our manuscript titled "Covector Fields which are Harmonic Maps in the Cotangent Bundle Equipped with the Horizontally Deformed Sasaki Metric." We would be very pleased if our manuscript meets the publishing standards of the Turkish Journal of Mathematics and Computer Science. Thank you once again. Sincerely, Dr. Abderrahim ZAGANE

References

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  3. Baird, P., Wood, J.C., Harmonic Morphisms Between Riemannian Manifolds, London Mathematical Society Monographs. New Series, 29, The Clarendon Press, Oxford University Press, Oxford, 2003.
  4. Biroud, K., Zagane, A., A study of harmonicity on cotangent bundle with Berger-type deformed Sasaki metric over a Riemannian manifold, Commun. Korean Math. Soc., 39(4)(2024), 927–945.
  5. Djaa, N.E., Zagane, A., Harmonicity of Mus-Gradient Metric, Int. J. Maps Math., 5(1)(2022), 61–77.
  6. Eells, J., Lemaire, L., A report on harmonic maps, Bull. Lond. Math. Soc., 10(1)(1978), 1–68.
  7. Eells, J., Lemaire, L., Another report on harmonic maps, Bull. Lond. Math. Soc., 20(5)(1988), 385–524.
  8. Eells, J., Sampson, J.H., Harmonic mappings of Riemannian manifolds, Amer.J. Math., 86(1)(1964), 109–160.

Details

Primary Language

English

Subjects

Algebraic and Differential Geometry

Journal Section

Research Article

Publication Date

June 30, 2026

Submission Date

July 21, 2025

Acceptance Date

January 29, 2026

Published in Issue

Year 2026 Volume: 18 Number: 2

APA
Zagane, A., & Djilali, M. (2026). Covector Fields which are Harmonic Maps in the Cotangent Bundle Equipped with the Horizontally Deformed Sasaki Metric. Turkish Journal of Mathematics and Computer Science, 18(2), 406-418. https://doi.org/10.47000/tjmcs.1743355
AMA
1.Zagane A, Djilali M. Covector Fields which are Harmonic Maps in the Cotangent Bundle Equipped with the Horizontally Deformed Sasaki Metric. TJMCS. 2026;18(2):406-418. doi:10.47000/tjmcs.1743355
Chicago
Zagane, Abderrahım, and Medjahed Djilali. 2026. “Covector Fields Which Are Harmonic Maps in the Cotangent Bundle Equipped With the Horizontally Deformed Sasaki Metric”. Turkish Journal of Mathematics and Computer Science 18 (2): 406-18. https://doi.org/10.47000/tjmcs.1743355.
EndNote
Zagane A, Djilali M (June 1, 2026) Covector Fields which are Harmonic Maps in the Cotangent Bundle Equipped with the Horizontally Deformed Sasaki Metric. Turkish Journal of Mathematics and Computer Science 18 2 406–418.
IEEE
[1]A. Zagane and M. Djilali, “Covector Fields which are Harmonic Maps in the Cotangent Bundle Equipped with the Horizontally Deformed Sasaki Metric”, TJMCS, vol. 18, no. 2, pp. 406–418, June 2026, doi: 10.47000/tjmcs.1743355.
ISNAD
Zagane, Abderrahım - Djilali, Medjahed. “Covector Fields Which Are Harmonic Maps in the Cotangent Bundle Equipped With the Horizontally Deformed Sasaki Metric”. Turkish Journal of Mathematics and Computer Science 18/2 (June 1, 2026): 406-418. https://doi.org/10.47000/tjmcs.1743355.
JAMA
1.Zagane A, Djilali M. Covector Fields which are Harmonic Maps in the Cotangent Bundle Equipped with the Horizontally Deformed Sasaki Metric. TJMCS. 2026;18:406–418.
MLA
Zagane, Abderrahım, and Medjahed Djilali. “Covector Fields Which Are Harmonic Maps in the Cotangent Bundle Equipped With the Horizontally Deformed Sasaki Metric”. Turkish Journal of Mathematics and Computer Science, vol. 18, no. 2, June 2026, pp. 406-18, doi:10.47000/tjmcs.1743355.
Vancouver
1.Abderrahım Zagane, Medjahed Djilali. Covector Fields which are Harmonic Maps in the Cotangent Bundle Equipped with the Horizontally Deformed Sasaki Metric. TJMCS. 2026 Jun. 1;18(2):406-18. doi:10.47000/tjmcs.1743355