Several Problems Related To Normal Criteria Of Families Of Meromorphic Functions

This thesis studies the normal families and normal function. With regard to normal families of meromorphic functions, the author analyzes and studies the normal families of meromorphic functions concerning shared values or shared a set in the theory of Nevanlinna's value distribution. The author obtains some normal criteria with improved the results of Zhang wenhua, Pang xuecheng and Zalcman, Huang xiaojun and Gu yongxing. At the same time we improved the Montel Criteria. With regard to normal function, we obtain several results of normal of meromorphic functions on the complex C or on the unit discΔ.