International Journal of Mathematics and Mathematical Sciences
Volume 2006 (2006), Article ID 29684, 13 pages
doi:10.1155/IJMMS/2006/29684

On sandwich theorems for some classes of analytic functions

T. N. Shanmugam,1 S. Sivasubramanian,2 and H. Silverman3

1Department of Mathematics, College of Engineering, Anna University, Chennai 600 025, India
2Department of Mathematics, Easwari Engineering College, Ramapuram, Chennai 600 089, India
3College of Charleston, Charleston 29424, SC, USA

Received 20 April 2006; Revised 31 July 2006; Accepted 5 September 2006

Copyright © 2006 T. N. Shanmugam et al. 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

The purpose of this present paper is to derive some subordination and superordination results for certain normalized analytic functions in the open unit disk. Relevant connections of the results, which are presented in the paper, with various known results are also considered.