EN
INTRODUCING A NOVEL SUBCLASS OF HARMONIC FUNCTIONS WITH CLOSE-TO-CONVEX PROPERTIES
Abstract
In this paper, we introduce a new subclass of close-to-convex harmonic functions. We present a sufficient coefficient condition for a function to be a member of this class. Furthermore, we establish a distortion theorem. These results lay the groundwork for extending the findings to function classes involving higher-order derivatives.
Keywords
References
- [1] Clunie, J., Sheil-Small, T., (1984), Harmonic univalent functions, Annales Fennici Mathematici, 9(1), 3-25. DOI: https://doi.org/10.5186/aasfm.1984.0905.
- [2] Kowalczyk, J., Le´s-Bomba, E., (2010), On a subclass of close-to-convex functions, Applied Mathematics Letters, 23(10), 1147-1151. DOI: https://doi.org/10.1016/j.aml.2010.03.004.
- [3] Owa, S., Nunokawa, M., Saitoh, H., Srivastava, H. M., (2002), Close-to-convexity, starlikeness, and convexity of certain analytic functions, Applied Mathematics Letters, 15(1), 63-69. DOI: https:// doi.org/10.1016/S0893-9659(01)00094-5.
- [4] Gao, C., Zhou, S., (2005), On a class of analytic functions related to the starlike functions, Kyungpook Mathematical Journal, 45(1), 123-130.
- [5] Şeker, B., (2011), On certain new subclass of close-to-convex functions, Applied Mathematics and Computation, 218(3), 1041-1045. DOI: https://doi.org/10.1016/j.amc.2011.03.018.
- [6] Ponnusamy, S., Yamamoto, H., Yanagihara, H., (2013), Variability regions for certain families of harmonic univalent mappings, Complex Variables and Elliptic Equations, 58(1), 23-34. DOI: https: //doi.org/10.1080/17476933.2010.551200.
- [7] Li, L., Ponnusamy, S., (2013), Disk of convexity of sections of univalent harmonic functions, Journal of Mathematical Analysis and Applications, 408, 589-596. DOI: https://doi.org/10.1016/j.jmaa.2013.06.021.
- [8] Li, L., Ponnusamy, S., (2013), Injectivity of sections of univalent harmonic mappings, Nonlinear Analysis, 89, 276-283. DOI: https://doi.org/10.1016/j.na.2013.05.016.
Details
Primary Language
English
Subjects
Real and Complex Functions (Incl. Several Variables)
Journal Section
Research Article
Publication Date
September 1, 2025
Submission Date
August 21, 2024
Acceptance Date
January 18, 2025
Published in Issue
Year 2025 Volume: 15 Number: 9
APA
Çakmak, S., & Yalcın, S. (2025). INTRODUCING A NOVEL SUBCLASS OF HARMONIC FUNCTIONS WITH CLOSE-TO-CONVEX PROPERTIES. TWMS Journal of Applied and Engineering Mathematics, 15(9), 2181-2191. https://izlik.org/JA75SL53MM
AMA
1.Çakmak S, Yalcın S. INTRODUCING A NOVEL SUBCLASS OF HARMONIC FUNCTIONS WITH CLOSE-TO-CONVEX PROPERTIES. JAEM. 2025;15(9):2181-2191. https://izlik.org/JA75SL53MM
Chicago
Çakmak, Serkan, and Sibel Yalcın. 2025. “INTRODUCING A NOVEL SUBCLASS OF HARMONIC FUNCTIONS WITH CLOSE-TO-CONVEX PROPERTIES”. TWMS Journal of Applied and Engineering Mathematics 15 (9): 2181-91. https://izlik.org/JA75SL53MM.
EndNote
Çakmak S, Yalcın S (September 1, 2025) INTRODUCING A NOVEL SUBCLASS OF HARMONIC FUNCTIONS WITH CLOSE-TO-CONVEX PROPERTIES. TWMS Journal of Applied and Engineering Mathematics 15 9 2181–2191.
IEEE
[1]S. Çakmak and S. Yalcın, “INTRODUCING A NOVEL SUBCLASS OF HARMONIC FUNCTIONS WITH CLOSE-TO-CONVEX PROPERTIES”, JAEM, vol. 15, no. 9, pp. 2181–2191, Sept. 2025, [Online]. Available: https://izlik.org/JA75SL53MM
ISNAD
Çakmak, Serkan - Yalcın, Sibel. “INTRODUCING A NOVEL SUBCLASS OF HARMONIC FUNCTIONS WITH CLOSE-TO-CONVEX PROPERTIES”. TWMS Journal of Applied and Engineering Mathematics 15/9 (September 1, 2025): 2181-2191. https://izlik.org/JA75SL53MM.
JAMA
1.Çakmak S, Yalcın S. INTRODUCING A NOVEL SUBCLASS OF HARMONIC FUNCTIONS WITH CLOSE-TO-CONVEX PROPERTIES. JAEM. 2025;15:2181–2191.
MLA
Çakmak, Serkan, and Sibel Yalcın. “INTRODUCING A NOVEL SUBCLASS OF HARMONIC FUNCTIONS WITH CLOSE-TO-CONVEX PROPERTIES”. TWMS Journal of Applied and Engineering Mathematics, vol. 15, no. 9, Sept. 2025, pp. 2181-9, https://izlik.org/JA75SL53MM.
Vancouver
1.Serkan Çakmak, Sibel Yalcın. INTRODUCING A NOVEL SUBCLASS OF HARMONIC FUNCTIONS WITH CLOSE-TO-CONVEX PROPERTIES. JAEM [Internet]. 2025 Sep. 1;15(9):2181-9. Available from: https://izlik.org/JA75SL53MM