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The Scientific World JournalVolume 2014 2014, Article ID 898614, 6 pages

Research Article

Department of Mathematics, College of Natural Sciences and Mathematics, California State University, 800 North State College Boulevard, Fullerton, CA 92831-3599, USA

School of Mathematical Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia

Department of Mathematics, University of Delhi, Delhi 110 007, India

Received 3 February 2014; Accepted 13 June 2014; Published 1 July 2014

Academic Editor: Ming-Sheng Liu

Copyright © 2014 Mahnaz M. Nargesi 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

Let be analytic in the unit disk with the second coefficient satisfying , . Sharp radius of Janowski starlikeness is obtained for functions whose th coefficient satisfies or . Other radius constants are also obtained for these functions, and connections with earlier results are made.





Autor: Mahnaz M. Nargesi, Rosihan M. Ali, and V. Ravichandran

Fuente: https://www.hindawi.com/



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