COEFFICIENT BOUNDS AND FEKETE-SZEGÖ FUNCTIONAL PROBLEM FOR A NEW SUBCLASS OF M-FOLD SYMMETRIC BI-UNIVALENT FUNCTIONS

Ayyub Gorganli Davaji; Ahmad Motamednezhad; Safa Salehian

COEFFICIENT BOUNDS AND FEKETE-SZEGÖ FUNCTIONAL PROBLEM FOR A NEW SUBCLASS OF M-FOLD SYMMETRIC BI-UNIVALENT FUNCTIONS

Abstract

This paper introduces a novel subclass of $m$-fold symmetric bi-univalent functions denoted as $\mathcal{S}_{\Sigma_m}^{h.p}$. Precise coefficient estimates for terms $|a_{m+1}| , |a_{2m+1}|$ and the Fekete-Szegö functional are derived for functions belonging to this subclass. The results presented in this paper would generalize and improve some recent works of several earlier authors.

Keywords

Thanks

The authors sincerely thank the referees for their valuable comments and suggestions.

References

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Details

Primary Language

English

Subjects

Real and Complex Functions (Incl. Several Variables)

Journal Section

Research Article

Authors

Ayyub Gorganli Davaji This is me
0009-0000-6842-1897
Iran

Ahmad Motamednezhad ^*
0000-0001-6844-129X
Iran

Safa Salehian
0000-0003-2562-7531
Iran

Publication Date

December 6, 2025

Submission Date

December 18, 2024

Acceptance Date

April 5, 2025

Published in Issue

Year 2025 Volume: 15 Number: 12

IZ

https://izlik.org/JA22FF93LJ

Cite

RIS / Bibtex

APA

Gorganli Davaji, A., Motamednezhad, A., & Salehian, S. (2025). COEFFICIENT BOUNDS AND FEKETE-SZEGÖ FUNCTIONAL PROBLEM FOR A NEW SUBCLASS OF M-FOLD SYMMETRIC BI-UNIVALENT FUNCTIONS. TWMS Journal of Applied and Engineering Mathematics, 15(12), 2732-2741. https://izlik.org/JA22FF93LJ

AMA

1.Gorganli Davaji A, Motamednezhad A, Salehian S. COEFFICIENT BOUNDS AND FEKETE-SZEGÖ FUNCTIONAL PROBLEM FOR A NEW SUBCLASS OF M-FOLD SYMMETRIC BI-UNIVALENT FUNCTIONS. JAEM. 2025;15(12):2732-2741. https://izlik.org/JA22FF93LJ

Chicago

Gorganli Davaji, Ayyub, Ahmad Motamednezhad, and Safa Salehian. 2025. “COEFFICIENT BOUNDS AND FEKETE-SZEGÖ FUNCTIONAL PROBLEM FOR A NEW SUBCLASS OF M-FOLD SYMMETRIC BI-UNIVALENT FUNCTIONS”. TWMS Journal of Applied and Engineering Mathematics 15 (12): 2732-41. https://izlik.org/JA22FF93LJ.

EndNote

Gorganli Davaji A, Motamednezhad A, Salehian S (December 1, 2025) COEFFICIENT BOUNDS AND FEKETE-SZEGÖ FUNCTIONAL PROBLEM FOR A NEW SUBCLASS OF M-FOLD SYMMETRIC BI-UNIVALENT FUNCTIONS. TWMS Journal of Applied and Engineering Mathematics 15 12 2732–2741.

IEEE

[1]A. Gorganli Davaji, A. Motamednezhad, and S. Salehian, “COEFFICIENT BOUNDS AND FEKETE-SZEGÖ FUNCTIONAL PROBLEM FOR A NEW SUBCLASS OF M-FOLD SYMMETRIC BI-UNIVALENT FUNCTIONS”, JAEM, vol. 15, no. 12, pp. 2732–2741, Dec. 2025, [Online]. Available: https://izlik.org/JA22FF93LJ

ISNAD

Gorganli Davaji, Ayyub - Motamednezhad, Ahmad - Salehian, Safa. “COEFFICIENT BOUNDS AND FEKETE-SZEGÖ FUNCTIONAL PROBLEM FOR A NEW SUBCLASS OF M-FOLD SYMMETRIC BI-UNIVALENT FUNCTIONS”. TWMS Journal of Applied and Engineering Mathematics 15/12 (December 1, 2025): 2732-2741. https://izlik.org/JA22FF93LJ.

JAMA

1.Gorganli Davaji A, Motamednezhad A, Salehian S. COEFFICIENT BOUNDS AND FEKETE-SZEGÖ FUNCTIONAL PROBLEM FOR A NEW SUBCLASS OF M-FOLD SYMMETRIC BI-UNIVALENT FUNCTIONS. JAEM. 2025;15:2732–2741.

MLA

Gorganli Davaji, Ayyub, et al. “COEFFICIENT BOUNDS AND FEKETE-SZEGÖ FUNCTIONAL PROBLEM FOR A NEW SUBCLASS OF M-FOLD SYMMETRIC BI-UNIVALENT FUNCTIONS”. TWMS Journal of Applied and Engineering Mathematics, vol. 15, no. 12, Dec. 2025, pp. 2732-41, https://izlik.org/JA22FF93LJ.

Vancouver

1.Ayyub Gorganli Davaji, Ahmad Motamednezhad, Safa Salehian. COEFFICIENT BOUNDS AND FEKETE-SZEGÖ FUNCTIONAL PROBLEM FOR A NEW SUBCLASS OF M-FOLD SYMMETRIC BI-UNIVALENT FUNCTIONS. JAEM [Internet]. 2025 Dec. 1;15(12):2732-41. Available from: https://izlik.org/JA22FF93LJ