Journal of East China Normal University(Natural Sc ›› 2013, Vol. 2013 ›› Issue (2): 154-159.

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Normal families on sequence of omitted functions

YANG Liu, CHEN Qiao-yu   

  1. Department of Mathematics, East China Normal University, Shanghai 200241, China
  • Received:2012-04-01 Revised:2012-07-01 Online:2013-03-25 Published:2013-03-20

Abstract: Let~$\{f_{n}\}$~be a sequence  of meromorphic functions on
a domain~$D$,~all of whose zeros have multiplicity at least $ 3$,and
each of which has a multiple pole. Let $\{h_{n}\}$~be a sequence of
meromorphic functions on~$D$, such that~$\{h_{n}\}$~converges
spherically locally uniformly to  a function~$h$ which is
meromorphic and zero-free on $D$. If~$f'_{n}\ne h_{n}$,
then~$\{f_{n}\}$~is normal on~$D$.

Key words: meromorphic function, normal family, sequence of omitted functions

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