International Journal of Mathematics and Mathematical Sciences
Volume 2008 (2008), Article ID 159029, 11 pages
doi:10.1155/2008/159029
Starlike and convex properties for hypergeometric functions
Oh Sang Kwon1
and Nak Eun Cho2
1Department of Mathematics, Kyungsung University, Busan 608-736, South Korea
2Department of Applied Mathematics, Pukyong National University, Busan 608-737, South Korea
Abstract
The purpose of the present paper is to give some characterizations for a (Gaussian) hypergeometric function to be in various subclasses of starlike and convex functions. We also consider an integral operator related to the hypergeometric function.