Qian LU(1),Yong Xing GU(2)
In this paper, the existence of the singular point related to normal criterion is widely proved for the meromorphic function of zero order on the unit disc, and thus, we obtain the follow result: suppose that f(z) is the meromorphic function on the unit disc and satisfies then there exists point eiθo (0≤θ0 ＜2π) such that for every positive ε＞0, every integer n ≥ 1, and every finite complex number a(a ≠ 0), we have limr→1-0 n(r, θ0, ε, fl fn = a) = +∞.
