应用Ahlfors覆盖曲面的方法,得到几个单位圆内亚纯函数的Nevanlinna基本不等式,应用它们证明了亚纯函数在单位圆内关于小函数的奇异半径的存在性,推广了复平面上亚纯函数奇异方向的相关结论.
By using Ahlfors’ covering surface method,some Nevanlinna fundamental inequalities of meromorphic functions in |z|〈 1 are derived.Prom those inequalities,the authors confirm the existence of some singular radiuses dealing with small growth functions in |z|〈 1,which briefly extend the corresponding results in the complex plane.