本文研究了平面上亚纯函数的奇异方向.利用角域内Ahlfors-Shimize特征函数和几个已有的关于函数增长性估计的引理,证明了复平面上的零级超越亚纯函数存在一条涉及小函数的T方向.推广了吴昭君和孙道椿给出的结果.
In this paper,the authors study the singular direction of a meromorphic function.By using the Ahlfors-Shimize characteristic in an angular domain and several growth lemmas established earlier,they establish the existence of a singular direction for zero order meromorphic function f,namely T direction with small meromorphic functions as targets.The result is an extended version of the related results given by Wu Z.J and Sun D.C.