论文标题
关于单价函数某些子类的某些特性
On certain properties of some subclasses of univalent functions
论文作者
论文摘要
在本文中,我们确定磁盘$ | z | <r \ le1 $,对于不同类别的单价函数,我们拥有属性$$ {\ rm re} \ left \ left \ {2 \ frac {zf {zf'(z)} {f(z){f(z)} {z)} - \ frac {z f''(z)}} (| z | <r)。$$
In this paper we determine the disks $|z|<r\le1$ where for different classes of univalent functions, we have the property $${\rm Re}\left\{2\frac{zf'(z)}{f(z)}-\frac{z f''(z)}{f'(z)}\right\}>0\qquad (|z|<r).$$