Ma-Minda starlikeness of certain analytic functions

被引:0
作者
Janani, Baskar Babujee [1 ]
Ravichandran, V. [1 ]
机构
[1] Natl Inst Technol, Dept Math, Trichy 620015, Tamil Nadu, India
来源
STUDIA UNIVERSITATIS BABES-BOLYAI MATHEMATICA | 2025年 / 70卷 / 01期
关键词
Univalent functions; starlike functions; convex functions; subordination; radius of starlikeness; RADIUS;
D O I
10.24193/subbmath.2025.1.02
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
A normalized analytic function defined on the open unit disc D is called Ma-Minda starlike if z f'(z)/f (z) is subordinate to the function phi. For a normalized convex function f defined on D and alpha > 0, we determine the radius of Ma-Minda starlikeness of the function g defined as g(z) = (z f'(z)/f (z))(alpha) f (z) for certain choices of phi. In particular, we investigate the radius of Janowski starlikeness of the function g.
引用
收藏
页码:15 / 32
页数:18
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