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arXiv 2008.06833math.CV
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心形区域与星形函数

A Cardioid Domain and Starlike Functions

S. Sivaprasad Kumar, Kamaljeet Gangania

摘要:

引入并研究了一类由\begin{equation*} \mathscr{S}^*_\wp:=\left\{f\in\mathcal{A}: \frac{zf'(z)}{f(z)}\prec 1+ze^z=:\wp(z)\right\}, \end{equation*}定义的星形函数,其中$\wp$将单位圆盘映射到心形区域上.我们找到了$\wp(z)$的凸半径,建立了类$ \mathscr{S}^*_\wp$与一些著名类之间的包含关系.进一步我们得到了类$ \mathscr{S}^*_\wp$的半径常数和系数相关的结果。

英文摘要:

We introduce and study a class of starlike functions defined by \begin{equation*} \mathscr{S}^*_\wp:=\left\{f\in\mathcal{A}: \frac{zf'(z)}{f(z)}\prec 1+ze^z=:\wp(z)\right\}, \end{equation*} where $\wp$ maps the unit disk onto a cardioid domain. We find the radius of convexity of $\wp(z)$ and establish the inclusion relations between the class $ \mathscr{S}^*_\wp$ and some well-known classes. Further we derive sharp radius constants and coefficient related results for the class $ \mathscr{S}^*_\wp$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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