Acta mathematica scientia,Series B ›› 2019, Vol. 39 ›› Issue (5): 1277-1289.doi: 10.1007/s10473-019-0507-9

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ON FIXED POINTS OF MEROMORPHIC FUNCTIONS f(z) AND f(z + c),∆cf(z)

Shuangting LAN1, Zongxuan CHEN2   

  1. 1. School of Mathematics and Systems Science, Guangdong Polytechnic Normal University, Guangzhou 510665, China;
    2. School of Mathematical Sciences, South China Normal University, Guangzhou 510631, China
  • Received:2018-05-16 Revised:2018-08-07 Online:2019-10-25 Published:2019-11-11
  • Contact: Zongxuan CHEN E-mail:chzx@vip.sina.com
  • Supported by:
    The project was supported by the Natural Science Foundation of Guangdong Province in China (2016A030310106), the National Natural Science Foundation of China (11801110, 11771090, 11761035, 11871260), the Foundation of Guangzhou Civil Aviation College (17X0419).

Abstract: Let c be a nonzero constant and f(z) be a transcendental meromorphic function of finite order. Under some conditions, we study the relationships between the exponent of convergence of fixed points of f(z), its shift f(z +c) and forward differences ∆cn f(z), n ∈ N+.

Key words: fixed points, meromorphic function, differences

CLC Number: 

  • 30D35
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