亚纯函数及其各级导数的线性组合的辐角分布

本文考虑了亚纯函数结合其导数的线性组合涉及重值的辐角分布方面的问题,证明了: 定理 设f(z)是λ级亚纯函数,0<λ<∞,则存在一条由原点出发的半直线B:argz=θ_0(0≤θ_0≤2π),使得对于任意正数ε,一切有穷复数a与一切有穷非零复数b有;其中F(z)=a_0f~((m))(z)+a_1f~((m-1))(z)+…+a_m(f(z)(a_0≠0)而k,l是满足(m+1)/k+1/l<1的正整数。

THE ANGULAR DISTRIBUTION OF MEROMORPHIC FUNCTIONS

This paper concerns with the angle distrbution of meromorphic function. The results are following:Theorem Let f (z) be a meromorphic function of order X ,then there exists a direction B:argz=0o ,such that for any e>0,any finite complex number a and any finte non -zero complex number b:k,l are positive integers satisfying