| Further Extension on a Theorem of the Value Distribution of f＇f^n |
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| 引用本文： | 窦盼英 吴昌群. Further Extension on a Theorem of the Value Distribution of f＇f^n[J]. 数学季刊, 2007, 22(1): 155-158 |
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| 作者姓名： | 窦盼英 吴昌群 |
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| 作者单位： | DOU Pan-ying（Department of Mathematics and Information Engineering, Puyang Professional Technical Institute,Puyang 457000, China） WU Chang-qun（College of Mathematics and Information Science, Henan University, Kaifeng 475001, China） |
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| 基金项目： | Supported by the Nature Science foundation of Henan Province(0211050200) |
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| 摘 要： | By using small function method, the following result is obtained. If f(z) is transcendental meromorphic and that Ψ(z) is non-zero meromorphic and that T(r, Ψ) =S(r, f), then (n 1)T(r,f)≤(-N)(r,1/f'fn-Ψ) 2(-N)(r,1/f) (-N)(r,f) S(r,f).
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| 关 键 词： | 超越亚纯函数 值分布 扩张 小函数法 |
| 文章编号： | 1002-0462(2007)01-0155-04 |
| 修稿时间： | 2005-12-20 |
Further Extension on a Theorem of the Value Distribution of f'fn |
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| DOU Pan-ying WU Ghang-qun. Further Extension on a Theorem of the Value Distribution of f'fn[J]. Chinese Quarterly Journal of Mathematics, 2007, 22(1): 155-158 |
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| Authors: | DOU Pan-ying WU Ghang-qun |
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| Affiliation: | [1]Department of Mathematics and Information Engineering, Puyang Professional Technical Institute, Puyang 457000, China [2]College of Mathematics and Information Science, Henan University, Kaifeng 475001, China |
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| Abstract: | |
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| Keywords: | transcendental meromorphic value distribution small function |
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