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Normality of Meromorphic Functions with Shared Values

SONG Hongwei1, YE Yasheng2   

  1. 1. College of Science, Henan University of Science and Technology, Luoyang 471003, Henan Province, China;2. College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China
  • Received:2007-12-18 Revised:1900-01-01 Online:2008-11-26 Published:2008-11-26
  • Contact: YE Yasheng

Abstract: The normality of meromophic functions with shared values is dealt with and the following result is achieved. Let Fbe a family of m eromorphic functions on the unit circle Δ , and a≠b, b≠0, c≠0 are finite complex  numbers. For f∈F, the zeros of f(z) are of mulitiplicity, at least, k(k≥2). F is normal on unit circle Δ.

Key words: meromophic function, share value, normal criterion 