A Remark on Meromorphic Functions Sharing Four Values

Abstract

In this paper, we prove that if two distinct non-constant meromorphic functions f and g share four distinct values a1,a2,a3,a4 \\DM \\ such that each ai-point is either a (p,q)-fold or (q,p)-fold point of f and g, then (p,q) is either (1,2) or (1,3) and f,g are in some particular forms.