International Journal of Mathematics and Mathematical Sciences 
Volume 20 (1997), Issue 2, Pages 403-404
doi:10.1155/S0161171297000525

On radii of starlikeness and convexity for convolutions of starlike functions

Yi Ling1 and Shusen Ding2

 1Department of Mathematics, Harbin Institute of Technology, Harbin, China
2Department of Mathematics, The Florida State University, Tallahassee 32306-3027, FL, USA
Received 5 May 1995; Revised 10 October 1995

Abstract

In this paper, we obtain the radiuses of univalence, starlikeness and convexity for convolutions of starlike functions.