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International Journal of Mathematics and Mathematical Sciences
Volume 2009, Article ID 685435, 13 pages
Research Article

An Application of Differential Subordination

1Department of Mathematics, College of Engineering, Anna University, Chennai 600025, India
2Department of Mathematics, Easwari Engineering College, Chennai 600089, India

Received 27 July 2009; Accepted 8 October 2009

Academic Editor: Narendra Kumar Govil

Copyright © 2009 T. N. Shanmugam and M. P. Jeyaraman. 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.


We apply the general theory of differential subordination to obtain certian interesting criteria for 𝑝 -valent starlikeness and strong starlikeness. Some applications of these results are also discussed.