UPPER BOUNDS OF SECOND HANKEL DETERMINANT FOR UNIVERSALLY PRESTARLIKE FUNCTIONS

被引:3
|
作者
Ahuja, Om [1 ]
Kasthuri, Murugesan [2 ]
Murugusundaramoorthy, Gangadharan [3 ]
Vijaya, Kaliappan [3 ]
机构
[1] Kent State Univ, Dept Math Sci, Kent, OH 44242 USA
[2] DKM Coll Women Autonomous, Dept Math, Vellore 632001, Tamil Nadu, India
[3] VIT Univ, Dept Math, Sch Adv Sci, Vellore 632014, Tamil Nadu, India
关键词
analytic functions; prestarlike functions; universally prestarlike functions; second Hankel determinant;
D O I
10.4134/JKMS.j160143
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
In [12,13] the researchers introduced universally convex, universally starlike and universally prestarlike functions in the slit domain C\[1,infinity). These papers extended the corresponding notions from the unit disc to other discs and half-planes containing the origin. In this paper, we introduce universally prestarlike generalized functions of order alpha with alpha <= 1 and we obtain upper bounds of the second Hankel determinant vertical bar alpha(2)alpha(4) - alpha(2)(3)vertical bar for such functions.
引用
收藏
页码:1019 / 1030
页数:12
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