ON A CLOSE-TO-CONVEX ANALOGUE OF CERTAIN STARLIKE FUNCTIONS

被引:2
|
作者
Allu, Vasudevarao [1 ]
Sokol, Janusz [2 ]
Thomas, Derek K. [3 ]
机构
[1] Indian Inst Technol Bhubaneswar, Sch Basic Sci, Bhubaneswar 752050, Odisha, India
[2] Univ Rzeszow, Fac Math & Nat Sci, Ul Prof Pigonia 1, PL-35310 Rzeszow, Poland
[3] Swansea Univ, Dept Math, Singleton Pk, Swansea SA2 8PP, W Glam, Wales
关键词
univalent function; starlike function; convex function; alpha-convex function; coefficient estimate; integral mean;
D O I
10.1017/S0004972719001606
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
For f analytic in the unit disk D, we consider the close-to-convex analogue of a class of starlike functions introduced by R. Singh ['On a class of star-like functions', Compos. Math. 19(1) (1968), 78-82]. This class of functions is defined by vertical bar zf'(z)/g(z) - 1 vertical bar < 1 for z is an element of D, where g is starlike in D. Coefficient and other results are obtained for this class of functions.
引用
收藏
页码:268 / 281
页数:14
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