Abstract
The aim of the present paper is to study some coefficient problems for certain classes associated with starlike functions such as sharp bounds for initial coefficients, logarithmic coefficients, Hankel determinants and Fekete–Szegö problems. Moreover, we obtain some geometric properties as applications of differential subordinations.
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The authors would like to express their thanks to the referees for their constructive advices and comments that helped to improve this paper.
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The third author was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (No. 2019R1I1A3A01050861).
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Ebadian, A., Bulboacă, T., Cho, N.E. et al. Coefficient bounds and differential subordinations for analytic functions associated with starlike functions. RACSAM 114, 128 (2020). https://doi.org/10.1007/s13398-020-00871-x
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DOI: https://doi.org/10.1007/s13398-020-00871-x
Keywords
- Coefficient estimates
- Differential subordination
- Starlike, convex, and univalent functions
- Hankel determinant
- Fekete–Szegő problem