NORMAL CRITERIA FOR TWO FAMILIES OF MEROMORPHIC FUNCTIONS SHARING SETS AND VALUES

Abstract

In 2013, X. J. Liu, S. H. Li and X. C. Pang [2] proved that: Let F and G be
two families of meromorphic functions on a domain D C; a1; a2; a3; a4 be
four distinct complex numbers. If G is normal, and for every f 2 F, there exists g 2 G such that f(z), g(z) share the value a1; a2; a3; a4, then F is normal on D: In this paper, we prove some normality criterias for two families meromorphic functions sharing sets and values related with above result. Up to now, our results are new.