SIMPLE CRITERIA FOR UNIVALENCE AND COEFFICIENT BOUNDS FOR A CERTAIN SUBCLASSES OF ANALYTIC FUNCTIONS

被引:4
|
作者
Jafari, Mostafa [1 ]
Bulboaca, Teodor [2 ]
Zireh, Ahmad [3 ]
Adegani, Ebrahim Analouei [3 ]
机构
[1] Islamic Azad Univ, Dept Math, Najafabad Branch, Najafabad, Iran
[2] Babes Bolyai Univ, Fac Math & Comp Sci, Cluj Napoca 400084, Romania
[3] Univ Shahrood, Fac Math Sci, POB 316-36155, Shahrood, Iran
来源
COMMUNICATIONS FACULTY OF SCIENCES UNIVERSITY OF ANKARA-SERIES A1 MATHEMATICS AND STATISTICS | 2020年 / 69卷 / 01期
关键词
Univalent function; differential subordination; starlike functions; close-to-convex functions; bi-univalent functions; fractional q-calculus operators; Faber polynomials; CALCULUS; OPERATORS;
D O I
10.31801/cfsuasmas.596546
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
In the first part of this work we present several new geometric properties of analytic functions by applying the differential subordination. In addition, several results in the geometric functions theory pointed out. In the second part we find upper bounds for coefficients of functions in class B-Sigma(q,mu)(beta, lambda, h) which is defined by fractional q-calculus operators.
引用
收藏
页码:394 / 412
页数:19
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