In this paper,it is proved:Let ■ be a family of meromorphic functions on the unit disc△,and a_1,a_2 and a_3 be three distinct complex numbers.If for every f∈■,f and f′share the set S={a_1,a_2,a_3},then ■ is normal on△.
Xiao Jun LIU; Xue Cheng PANG.
Shared Values and Normal Families. Acta Mathematica Sinica, Chinese Series, 2007, 50(2): 409-412 https://doi.org/10.12386/A2007sxxb0049