ON CRITERIA FOR STARLIKENESS AND CONVEXITY OF ANALYTIC FUNCTIONS

被引:0
|
作者
Vikramaditya Singh
Nikola Tuneski
机构
[1] Faculty of Mechanical Engineering
[2] Karpos Ⅱ b.b.
[3] 1000 Skopje
[4] Republic of Macedonia
关键词
Starlike; convex; criteria; Fekete-Szego;
D O I
暂无
中图分类号
O174 [函数论];
学科分类号
070104 ;
摘要
In this paper the authors study (1-γ + zf(?)(z)/f’(z))/(zf’(z)/f(z)) as a criteria for starlikeness and convexity. Sharp upper bound of |α2| and of the Fekete-Szego functional |α3-μα22| is given for a class of analytic functions defined by using this expression.
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页码:597 / 602
页数:6
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