关于Nevanlinna方向存在性的一个证明

A proof about the existence of the Nevanlinna direction

将复平面分割成有限个角域,再根据重新定义亏值的方法下,讨论了开平面上的亚纯函数f(z)的Nevanlinna方向的存在性问题,并给出了简易证明。

The complex plane is divided into a finite number of angular domain, then according to the following method to redefine the deficit values, discuss the existence of the problem Nevanlinna direc- tion of complex surface of meromorphic functions, and gives a simple proof.