Properties and characteristics of certain subclasses of starlike functions of order β

被引:16
作者
Liu, Ming-Sheng [2 ]
Zhu, Yu-Can [3 ]
Srivastava, H. M. [1 ]
机构
[1] Univ Victoria, Dept Math & Stat, Victoria, BC V8W 3P4, Canada
[2] S China Normal Univ, Sch Math Sci, Guangzhou 510631, Guangdong, Peoples R China
[3] Fuzhou Univ, Dept Math, Fuzhou 350002, Fujian, Peoples R China
基金
加拿大自然科学与工程研究理事会;
关键词
analytic functions; starlike functions; inclusion relations; Hadamard products; coefficient estimates; distortion theorems; covering theorems; Srivastava-Saigo Owa fractional integral operator; Gauss hypergeometric function;
D O I
10.1016/j.mcm.2006.09.026
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
The authors introduce and investigate the various properties and characteristics of two subclasses H-n(alpha, beta) and H-n(+) (alpha, beta) of starlike functions of order beta. In particular, several inclusion relations, Hadamard products, coefficient estimates, distortion theorems and covering theorems are proven here for each of these function classes. Furthermore, some interesting distortion theorems for the Srivastava-Saigo-Owa fractional integral operator are obtained. Some of the results, presented in this paper, generalize and extend the corresponding results of earlier authors. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码:402 / 419
页数:18
相关论文
共 15 条
[1]  
Chatterjea S. K., 1981, J PURE MATH, V1, P23
[2]   Some functional inequalities and inclusion relationships associated with certain families of integral operators [J].
Gao, CY ;
Yuan, SM ;
Srivastava, HM .
COMPUTERS & MATHEMATICS WITH APPLICATIONS, 2005, 49 (11-12) :1787-1795
[3]  
Goodman A. W., 1983, Univalent functions, VI and II
[4]  
GRAHAM I., 2003, Monographs and Textbooks in Pure and Applied Mathematics, V255
[5]   GENERATING FUNCTIONS FOR SOME CLASSES OF UNIVALENT FUNCTIONS [J].
LEWANDOWSKI, Z ;
MILLER, S ;
ZLOTKIEWICZ, E .
PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY, 1976, 56 (APR) :111-117
[6]  
Li JL, 2002, INDIAN J PURE AP MAT, V33, P313
[7]   On certain classes of strongly starlike functions [J].
Obradovic, M ;
Joshi, SB .
TAIWANESE JOURNAL OF MATHEMATICS, 1998, 2 (03) :297-302
[8]   Close-to-convexity, starlikeness, and convexity of certain analytic functions [J].
Owa, S ;
Nunokawa, M ;
Saitoh, H ;
Srivastava, HM .
APPLIED MATHEMATICS LETTERS, 2002, 15 (01) :63-69
[9]  
Ramesha C., 1995, CHINESE J MATH, V23, P167
[10]  
Ravichandran V, 2002, J INEQUAL PURE APPL, V3, P1