Research Article

Coefficient estimates for a new subclass of m-fold symmetric analytic bi-univalent functions

Volume: 68 Number: 2 August 1, 2019
EN

Coefficient estimates for a new subclass of m-fold symmetric analytic bi-univalent functions

Abstract

Considering a new subclass of m-fold symmetric analytic bi-univalent functions, we determine estimates the coefficient bounds for the Taylor-Maclaurin coefficients |a_{m+1}| and |a_{2m+1}| of the functions in this class. In certain cases, our estimates improve some of those existing coeffcient bounds.

Keywords

References

  1. Altınkaya, Ş. and Yalçın, S., Coefficient bounds for certain subclasses of m-fold symmetric bi-univalent functions, J. Math. (2015), Art. ID 241683, 5 pp.
  2. Atshan, W.G. and Al-Ziadi, N.A.J., Coefficients bounds for a general subclasses of m-fold symmetric bi-univalent functions, J. Al-Qadisiyah Comput. Sci. Math. 9 (2) (2017), 33--39.
  3. Brannan, D.A. and Taha, T.S., On some classes of bi-univalent functions, in Mathematical Analysis and Its Applications (S. M. Mazhar, A. Hamoui and N. S. Faour, Editors) (Kuwait; February 18--21, 1985), KFAS Proceedings Series, Vol. 3, Pergamon Press (Elsevier Science Limited), Oxford, 1988, pp. 53--60; see also Studia Univ. Babes¸-Bolyai Math. 31 (2) (1986), 70--77.
  4. Bulut, S., Coefficient estimates for general subclasses of m-fold symmetric analytic bi-univalent functions, Turkish J. Math. 40 (6) (2016), 1386--1397.
  5. Bulut, S., Magesh, N. and Balaji, V.K., Faber polynomial coefficient estimates for certain subclasses of meromorphic bi-univalent functions, C. R. Acad. Sci. Paris, Ser. I, 353 (2015), 113--116.
  6. Frasin, B.A. and Aouf, M.K., New subclasses of bi-univalent functions, Appl. Math. Lett. 24 (2011) 1569--1573.
  7. Hamidi, S.G. and Jahangiri, J.M., Unpredictability of the coefficients of m-fold symmetric bi-starlike functions, Internat. J. Math. 25 (7) (2014), 1450064, 8 pp.
  8. Pommerenke, Ch., On the coefficients of close-to-convex functions, Michigan. Math. J. 9 (1962), 259--269.

Details

Primary Language

English

Subjects

Mathematical Sciences

Journal Section

Research Article

Publication Date

August 1, 2019

Submission Date

November 15, 2017

Acceptance Date

September 9, 208

Published in Issue

Year 2019 Volume: 68 Number: 2

APA
Bulut, S. (2019). Coefficient estimates for a new subclass of m-fold symmetric analytic bi-univalent functions. Communications Faculty of Sciences University of Ankara Series A1 Mathematics and Statistics, 68(2), 1401-1410. https://doi.org/10.31801/cfsuasmas.530879
AMA
1.Bulut S. Coefficient estimates for a new subclass of m-fold symmetric analytic bi-univalent functions. Commun. Fac. Sci. Univ. Ank. Ser. A1 Math. Stat. 2019;68(2):1401-1410. doi:10.31801/cfsuasmas.530879
Chicago
Bulut, Serap. 2019. “Coefficient Estimates for a New Subclass of M-Fold Symmetric Analytic Bi-Univalent Functions”. Communications Faculty of Sciences University of Ankara Series A1 Mathematics and Statistics 68 (2): 1401-10. https://doi.org/10.31801/cfsuasmas.530879.
EndNote
Bulut S (August 1, 2019) Coefficient estimates for a new subclass of m-fold symmetric analytic bi-univalent functions. Communications Faculty of Sciences University of Ankara Series A1 Mathematics and Statistics 68 2 1401–1410.
IEEE
[1]S. Bulut, “Coefficient estimates for a new subclass of m-fold symmetric analytic bi-univalent functions”, Commun. Fac. Sci. Univ. Ank. Ser. A1 Math. Stat., vol. 68, no. 2, pp. 1401–1410, Aug. 2019, doi: 10.31801/cfsuasmas.530879.
ISNAD
Bulut, Serap. “Coefficient Estimates for a New Subclass of M-Fold Symmetric Analytic Bi-Univalent Functions”. Communications Faculty of Sciences University of Ankara Series A1 Mathematics and Statistics 68/2 (August 1, 2019): 1401-1410. https://doi.org/10.31801/cfsuasmas.530879.
JAMA
1.Bulut S. Coefficient estimates for a new subclass of m-fold symmetric analytic bi-univalent functions. Commun. Fac. Sci. Univ. Ank. Ser. A1 Math. Stat. 2019;68:1401–1410.
MLA
Bulut, Serap. “Coefficient Estimates for a New Subclass of M-Fold Symmetric Analytic Bi-Univalent Functions”. Communications Faculty of Sciences University of Ankara Series A1 Mathematics and Statistics, vol. 68, no. 2, Aug. 2019, pp. 1401-10, doi:10.31801/cfsuasmas.530879.
Vancouver
1.Serap Bulut. Coefficient estimates for a new subclass of m-fold symmetric analytic bi-univalent functions. Commun. Fac. Sci. Univ. Ank. Ser. A1 Math. Stat. 2019 Aug. 1;68(2):1401-10. doi:10.31801/cfsuasmas.530879

Cited By

Communications Faculty of Sciences University of Ankara Series A1 Mathematics and Statistics

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.