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Open AccessArticle

The Fifth Coefficient of Bazilevič Functions

1
Department of Mathematics, Kyungsung University, Busan 48434, Korea
2
Department of Mathematics, Swansea University, Bay Campus, Swansea SA1 8EN, UK
*
Author to whom correspondence should be addressed.
Symmetry 2020, 12(8), 1228; https://doi.org/10.3390/sym12081228
Received: 12 July 2020 / Revised: 22 July 2020 / Accepted: 25 July 2020 / Published: 26 July 2020
(This article belongs to the Special Issue Symmetry in Geometric Functions and Mathematical Analysis)
Let fA, the class of normalized analytic functions defined in the unit disk D, and be given by f(z)=z+n=2anzn for zD. This paper presents a new approach to finding bounds for |an|. As an application, we find the sharp bound for |a5| for the class B1(α) of Bazilevič functions when α1. View Full-Text
Keywords: univalent functions; Bazilevič functions; coefficient problems univalent functions; Bazilevič functions; coefficient problems
MDPI and ACS Style

Kwon, O.S.; Thomas, D.K.; Sim, Y.J. The Fifth Coefficient of Bazilevič Functions. Symmetry 2020, 12, 1228.

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