Journals / Hacettepe Journal of Mathematics and Statistics / 2019 / Cilt: 48 - Sayı: 6

On third Hankel determinants for subclasses of analytic functions and close-to-convex harmonic mappings

Pages
1695–1705
Publication Date
2022-10-18
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Connections of the results presented here to those that can be found in the literature are also discussed.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this paper, we obtain the upper bounds to the third Hankel determinants for convex functions of order $\alpha$ and bounded turning functions of order $\alpha$.
📊
Key Findings & Data:Furthermore, several relevant results on a new subclass of close-to-convex harmonic mappings are obtained.
💡
Conclusion & Impact:Connections of the results presented here to those that can be found in the literature are also discussed.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Univalent function · starlike function · convex function

Abstract

In this paper, we obtain the upper bounds to the third Hankel determinants for convex functions of order $\alpha$ and bounded turning functions of order $\alpha$. Furthermore, several relevant results on a new subclass of close-to-convex harmonic mappings are obtained. Connections of the results presented here to those that can be found in the literature are also discussed.

🔖

Cite This Article

Sun, Y., Wang, Z., Rasila, A. (2022). On third Hankel determinants for subclasses of analytic functions and close-to-convex harmonic mappings. Hacettepe Journal of Mathematics and Statistics, Cilt: 48 - Sayı: 6, 1695–1705. https://ajindex.com/articles/529714

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (19)

  1. Y. Abu Muhanna, L. Li, and S. Ponnusamy, Extremal problems on the class of convex functions of order -1/2, Arch. Math. (Basel) 103 (6), 461–471, 2014
  2. K.O. Babalola, On H3(1) Hankel determinant for some classes of univalent functions, in: Inequal. Theory and Appl. 6, 1–7, editors: Y. J. Cho, J.K. Kim and S.S. Dragomir, 2010
  3. D. Bansal, Upper bound of second Hankel determinant for a new class of analytic functions, Appl. Math. Lett. 26 (1), 103–107, 2013
  4. D. Bansal, S. Haharana, and J.K. Prajapat, Third order Hankel determinant for certain univalent functions, J. Korean Math. Soc. 52, 1139–1148, 2015
  5. S.V. Bharanedhar and S. Ponnusamy, Coefficient conditions for harmonic univelent mappings and hypergeometric mappings, Rocky Mt. J. Math. 44, 753–777, 2014
  6. D. Bshouty, S.S. Joshi, and S.B. Joshi, On close-to-convex harmonic mappings, Complex Var. Elliptic Equ. 58, 1195–1199, 2013
  7. D. Bshouty and A. Lyzzaik, Close-to-convexity criteria for planar harmonic mappings, Complex Appl. Oper. Theory 5, 767–774, 2011
  8. D.G. Cantor, Power series with integral coefficients, Bull. Amer. Math. Soc. 69, 362– 366, 1963
  9. J. Chen, A. Rasila, and X. Wang, Coefficient estimates and radii problems for certain classes of polyharmonic mappings, Complex Var. Elliptic Equ. 60, 354–371, 2015
  10. J. Clunie and T. Sheil-Small, Harmonic univalent functions, Ann. Acad. Sci. Fenn. Ser. A. I Math. 9, 3–25, 1984
  11. P. Dienes, The Taylor Series, Dover, New York, 1957
  12. P.L. Duren, Univalent functions, Springer Verlag, New York Inc., 1983
  13. P.L. Duren, Harmonic mappings in the plane, Cambridge University Press, Cambridge, 2004
  14. A. Edrei, Sur les déterminants récurrents et les singularités d’une fonction donnée par son développement de Taylor, Compos. Math. 7, 20–88, 1940
  15. M. Fekete and G. Szegő, Eine bemerkung über ungerade schlichte functions, J. London Math. Soc. 8, 85–89, 1933
  16. T. Hayami and S. Owa, Generalized Hankel determinant for certain classes, Int. J. Math. Anal. 4 (52), 2573–2585, 2010
  17. W.K. Hayman, On the second Hankel determinant of mean univalent functions, Proc. Lond. Math. Soc. 18 (3), 77–94, 1968
  18. A. Janteng, S. Halim, and M. Darus, Coefficient inequality for a function whose derivative has a positive real part, J. Inequal. Pure Appl. Math. 7 (2), Art. 50, 5 pp, 2006
  19. A. Janteng, S.A. Halim, and M. Darus, Hankel determinant for starlike and convex functions, Int. J. Math. Anal. 1 (13), 619–625, 2007.