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arXiv 1608.07520math.CV
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近于凸函数的对数系数

Logarithmic coefficients of close-to-convex functions

Md Firoz Ali, D. K. Thomas, A. Vasudevarao

摘要:

对于解析单叶函数$f$在单位圆$\mathbb{D}:=\{z\in\mathbb{C}:|z|<1\}$中的归一化$f(0)=0=f'(0)-1$,对数系数$γ_n$由$\log \frac{f(z)}{z}= 2\sum_{n=1}^{\infty} γ_n z^n$定义。本文研究了一类逼近凸函数(带变元$0$),确定了这类函数$f$的$|γ_3|$的精确上界,从而证明了第一、第三作者[1]的一个猜想.

英文摘要:

For an analytic and univalent function $f$ in the unit disk $\mathbb{D}:=\{z\in\mathbb{C}:|z|<1\}$ with the normalization $f(0)=0=f'(0)-1$, the logarithmic coefficients $γ_n$ are defined by $\log \frac{f(z)}{z}= 2\sum_{n=1}^{\infty} γ_n z^n$. In the present paper, we consider the class of close-to-convex functions (with argument $0$), and determine the sharp upper bound of $|γ_3|$ for such functions $f$, which proves a recent conjecture of the first and third authors [1].

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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