On Normal Families Of Meromorphic Functions With Differential Polynomial

In this thesis,we mainly study normal families of meromorphic functions,which is an important subject in complex analysis.Many results were made on this respect. Normal families concerning function,s derivatives were becoming an activated subject all the time. In this thesis, we will do a further study in normal families of meromorphic functions concerning function,s derivative by using mainly the Nevanlinna,s value distribution theory of normal families of meromorphic functions. Through the analysis, the author obtains some normality criteria concerning function,s derivative and differential polynomial,which extends existing results.