Normality and shared values

作者:Pang XC; Zalcman L
来源:Arkiv for Matematik, 2000, 38(1): 171-182.
DOI:10.1007/BF02384496

摘要

Let F be a family of meromorphic functions on the unit disc Delta and let a and b be distinct values. If for every f is an element of F, f and f' share a and b on Delta, then F is normal on Delta.