Journal of Inequalities and Applications
Volume 2010 (2010), Article ID 926302, 10 pages
Research Article

Some Normality Criteria of Meromorphic Functions

Department of Mathematics, Wuyi University, Jiangmen, Guangdong 529020, China

Received 2 September 2009; Revised 11 January 2010; Accepted 23 March 2010

Academic Editor: Ram N. Mohapatra

Copyright © 2010 Junfeng Xu and Wensheng Cao. 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.


This paper studies some normality criteria for a family of meromorphic functions, which improve some results of Lahiri, Lu and Gu, as well as Charak and Rieppo.