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JMB Journal of Microbiolog and Biotechnology

OPEN ACCESS eISSN 0454-8124
pISSN 1225-6951
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Original Article

Kyungpook Mathematical Journal 2008; 48(2): 317-321

Published online June 23, 2008

Copyright © Kyungpook Mathematical Journal.

Normal Families and Shared Values of Meromorphic Functions

Chao Meng

Department of Mathematics, Shandong University, Jinan 250100, Shandong, China

Abstract

Some criteria for determining the normality of the family $F$ of meromorphic functions in the unit disc, which share values depending on $fin F$ with their derivatives is obtained. The new results in this paper improve some earlier related results given by Pang and Zalcman cite{Pang}, Fang and Zalcman cite{Fang}, A. P. Singh and A. Singh cite{A.Singh}.

Keywords: meromorphic function, shared value, normal family