与斐波那契数连接的类壳曲线有关的一价和双一价函数的某些子类

General Letters in Mathematics Pub Date : 2020-06-01 DOI:10.2478/gm-2020-0010

Gurmeet Singh, G. Singh, G. Singh

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引用次数: 3

摘要

摘要本文讨论了与斐波那契数相连的类壳曲线有关的一价函数和双一价函数的某些子类。我们找到了这类函数的初始系数|a2|和|a3|的估计。我们还研究了这些类的Fekete-Szegö泛函和第二汉克尔行列式的上界。

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Certain subclasses of univalent and bi-univalent functions related to shell-like curves connected with Fibonacci numbers

Abstract This paper is concerned with certain subclasses of univalent and bi-univalent functions related to shell-like curves connected with Fibonacci numbers. We find estimates of the initial coefficients |a2| and |a3| for the functions in these classes. Also we investigate upper bounds for the Fekete-Szegö functional and second Hankel determinant for these classes.

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General Letters in Mathematics

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审稿时长

6 weeks