Chinese Quarterly Journal of Mathematics ›› 2015, Vol. 30 ›› Issue (1): 20-29.doi: 10.13371/j.cnki.chin.q.j.m.2015.01.003

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Normality Criteria of Meromorphic Functions Concerning Shared Fixed-points

  

  1. School of Mathematical Sciences, Xinjiang Normal University
  • Received:2014-01-09 Online:2015-03-30 Published:2020-11-24
  • About author:YANG Qi(1979-), female, native of Akesu, Xinjiang, a lecturer of Xinjiang Normal University, engages in teaching and studying of complex analysis.
  • Supported by:
    Supported by the NSFC(11461070);

Abstract: In this paper, we study the normality criteria of meromorphic functions concerning shared fixed-points, we obtain: Let F be a family of meromorphic functions defined in a domain D. Let n, k ≥ 2 be two positive integers. For every f ∈ F, all of whose zeros have multiplicity at least (nk+2)/(n-1). If f(f(k)nand g(g(k)nshare z in D for each pair of functions f and g, then F is normal. 

Key words: meromorphic function, fixed-points, shared value, normal criterion

CLC Number: