International Journal of Mathematics and Mathematical Sciences
Volume 19 (1996), Issue 2, Pages 381-388
doi:10.1155/S016117129600052X
Extreme points and convolution properties of some classes of multivalent functions
Division of Mathematics, National Institute of Education, Nanyang Technological University, 469 Bukit Timah Road, Singapore 259756, Singapore
Received 5 April 1988; Revised 26 June 1991
Copyright © 1996 O. P. Ahuja. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
This paper deals with the extreme points of closed convex hulls of the classes of
multivalent functions related to Ruscheweyh derivatives and then these are used to determine the
coefficient bounds. Finally, we investigate convolution conditions and other properties of the functions in
these classes.