| TWO PROBLEMS ABOUT COMPOSITION OPERATORS ON HARDY SPACE |
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| 作者姓名： | 吴树宏 王茂发 刘培德 |
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| 作者单位： | [1]DepartmentofMothematies.HuazhongUniversityofScieaeeandTechnology,Wuhan430074,China [2]SchoolofMathematicsandStatistics,WuhanUniversity,Wuhan430072.China |
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| 基金项目： | This research is supported by the NNSF of China (10401027) |
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| 摘 要： | In this paper, two problems about composition operator on Hardy space are considered. Firstly, a new estimation of the norm of a class of composition operators is given. Secondly, the cyclic behavior of the adjoint operator of a composition operator is discussed.
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| 关 键 词： | 哈迪空间 复合算子 数值域 循环矢量 |
| 收稿时间： | 12 February 2003 |
TWO PROBLEMS ABOUT COMPOSITION OPERATORS ON HARDY SPACE |
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| WU Shuhong,WANG Maofa,Liu Peide.TWO PROBLEMS ABOUT COMPOSITION OPERATORS ON HARDY SPACE[J].Acta Mathematica Scientia,2005,25(3):515-524. |
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| Authors: | WU Shuhong WANG Maofa Liu Peide |
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| Abstract: | In this paper, two problems about composition operator on Hardy space are considered. Firstly, a new estimation of the norm of a class of composition operators is given. Secondly, the cyclic behavior of the adjoint operator of a composition operator is discussed. |
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| Keywords: | Hardy space composition operator numerical range cyclic vector |
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