On zeros and fixed points of differences of meromorphic functions

On zeros and fixed points of differences of meromorphic functions
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DOI:
10.1016/j.jmaa.2008.02.048
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发表时间:
2008-08
影响因子:
1.3
通讯作者:
Zong-Xuan Chen;K. Shon
Zong-Xuan Chen;K. Shon
中科院分区:
数学3区
文献类型:
--
作者:
Zong-Xuan Chen;K. Shon

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令 f 为超越亚纯函数且 g(z)=f(z+1)−f(z)。证明了关于 g(z) 或 g(z)/f(z) 的零点和不动点存在性的许多结果,这些结果扩展了 Bergweiler 和 Langley [W.伯格韦勒,J.K.兰利,亚纯函数的差异零点,数学。过程。剑桥斐洛斯。苏克。 142(2007)133-147]。
Let f be a transcendental meromorphic function and g(z)=f(z+1)−f(z). A number of results are proved concerning the existences of zeros and fixed points of g(z) or g(z)/f(z) which expand results of Bergweiler and Langley [W. Bergweiler, J.K. Langley, Zeros of differences of meromorphic functions, Math. Proc. Cambridge Philos. Soc. 142 (2007) 133–147].