导数具四个公共小函数的亚纯函数

Meromorphic Functions with Derivatives Sharing Four Small Functions

该文主要讨论亚纯函数的导数具有四个公共小函数时的唯一性问题 ,考虑了 Nevanlinna四值定理在亚纯函数的导数具公共小函数时的情形 ,推广并改进了作者近期的一个结果 .

In this paper, the author mainly discusses the uniqueness problem of derivatives of meromorphic functions that share four small functions, and considers that the case of Nevanlinna's Four Values Theorem when the derivatives of meromorphic functions that share some small functions, which generalizes and improves a recent result by the author.