Coefficient Problems in a Class of Functions with Bounded Turning Associated with Sine Function
DOI:
https://doi.org/10.29020/nybg.ejpam.v14i1.3902Keywords:
Holomorphic functions, Subordinations, Trigonometric function, Hankel determinantAbstract
The Hankel determinant for a function having power series was first defined by Pommerenke. The growth of Hankel determinant has been evaluated for different subcollections of univalent functions. Many subclasses with bounded turning are several interesting geometric properties. In this paper, some classes of functions with bounded turning which connect to the sine function are studied in the region of the unit disc in order. Our purpose is to obtain some upper bounds for the third and fourth Hankel determinants related to such classes.Downloads
Published
2021-01-31
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Section
Nonlinear Analysis
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How to Cite
Coefficient Problems in a Class of Functions with Bounded Turning Associated with Sine Function. (2021). European Journal of Pure and Applied Mathematics, 14(1), 53-64. https://doi.org/10.29020/nybg.ejpam.v14i1.3902