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分担集合的亚纯函数正规族 被引量:2

Normal Families of Meromorphic Functions and Shared Sets
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摘要 对复平面C的非空有限子集S_1和S_2,记在复平面区域D内满足{z∈D:f(z)∈S_1}={z∈D:f′(z)∈S_2}的全体亚纯函数f形成的函数族为<S_1,S_2>D,那么当S_1和S_2共有至少12个元素对函数族<S_1,S_2>D正规.特别地,当S_1具有至少三个复数时,我们得到了准确的结果. For nonempty finite setsS1 and S2 and a domain D on C, denote by(S1, S2)D the family of meromorphic functions f which satisfy {z ∈D : f(z) C ∈S1} = {z E D : f^1(z) C∈S2}. We prove that if S1 and S2 have totally at least 12 elements, then 〈S1, S2〉D is normal. In particular, when S1 has at least three elements, we get the sharp results.
出处 《数学学报(中文版)》 SCIE CSCD 北大核心 2011年第6期1049-1056,共8页 Acta Mathematica Sinica:Chinese Series
基金 国家自然科学基金资助项目(10871094)
关键词 亚纯函数 正规族 分担集合 meromorphic functions normal family shared sets
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参考文献9

  • 1Yang L., Value Distribution Theory, Berlin: Spring-Verlag, 1993.
  • 2Hayman W. K., Meromorphic Functions, Oxford: Clarendon Press, 1964.
  • 3Schwick W., Shaving values and normality, Arch Math., 1992, 59: 50-54.
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同被引文献8

  • 1刘晓俊,庞学诚.分担值与正规族[J].数学学报(中文版),2007,50(2):409-412. 被引量:15
  • 2Yang L. Value Distribution Theory [M]. Berlin: Springer-Ver- lag, 1993.
  • 3Hayman W K. Meromorphic functions [M]. Oxford: The Clare- don, 1964.
  • 4Schwick W. Sharing values and normality [J]. Arch Math J, 1992, 59:50-54.
  • 5Hayman W K, Miles J. On the growth of a meromorphie function and its derivatives [J]. Complex Variables, 1989, 12.. 245 260.
  • 6Pang X C, Zalcman L. Normal families and shared values [J]. Bull London Math Soe, 2000, 32: 325-331.
  • 7Wang Yuefei,Fang Mingliang Institute of Mathematics, Academia Sinica, Beijing 100080, China Institute of Mathematics, Academia Sinica, Beijing 100080, China Department of Mathematics, Nanjing Normal University, Nanjing 210097, China.Picard Values and Normal Families of Meromorphic Functions with Multiple Zeros[J].Acta Mathematica Sinica,English Series,1998,14(1):17-26. 被引量:99
  • 8方明亮.关于分担值与正规性的─点注记[J].数学研究,1996,29(4):29-32. 被引量:16

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