| 调和函数类的一些界的估计结果北大核心CSCD |
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| 引用本文： | 熊良鹏,王雅倩.调和函数类的一些界的估计结果北大核心CSCD[J].数学年刊A辑(中文版),2022,43(4):431-444. |
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| 作者姓名： | 熊良鹏 王雅倩 |
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| 作者单位： | 江西科技师范大学数学与计算机科学学院, 南昌 330038. |
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| 基金项目： | 国家自然科学基金(No.12061035), 江西省自然科学基金(No.20212BAB201012),江西省教育厅科研项目(No.GJJ201104)和江西科技师范大学青年拔尖人才项目(No.2021QNBJRC003) |
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| 摘 要： | 研究了单位开圆盘内保向复值的调和函数类,其中函数的解析部分满足一定的从属条件.完整的给出了该函数类Bloch常数的界、系数估计、增长和偏差不等式的界.进一步,通过指定一些关键参数,证明其pre-Schwarzian导数的范数也是有界的.
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| 关 键 词： | Bloch常数 偏差定理 调和函数 Janowsk凸函数 pre-Schwarzian导数 |
| 收稿时间： | 2021/2/24 0:00:00 |
| 修稿时间： | 2022/10/2 0:00:00 |
Some Bounds for a Family of Harmonic Mappings |
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| XIONG Liangpeng,WANG Yaqian.Some Bounds for a Family of Harmonic Mappings[J].Chinese Annals of Mathematics,2022,43(4):431-444. |
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| Authors: | XIONG Liangpeng WANG Yaqian |
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| Institution: | Corresponding author. School of Mathematics and Computer Science, Jiangxi Science and Technology Normal University, Nanchang 330038, China. |
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| Abstract: | In this paper, the authors introduce a class of the sense-preserving complexvalued harmonic functions f in open unit disk, and the analytic parts of f are restricted to subordinate a fractional function whose image is symmetric with respect to the real axis.With this class, the authors obtain the bounds on Bloch constant, coefficients estimates,growth and distortion theorems. By specifying some crucial parameters, the authors also prove that the norm of pre-Schwarzian derivative for the class is bounded. |
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| Keywords: | Bloch constant Distortion theorem Harmonic functions Janowsk convex functions Pre-Schwarzian derivative |
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