Value sharing of an entire function and its derivatives

抄録

In this paper, when an entire function f and the linear combination of its derivatives L(f) with small functions as its coefficients share one value CM and another value IM is studied. We also resolved the question when an entire function f and its derivative f^{'} share two values CM jointly. Some of the results remain to be valid if f is meromorphic and satisfying N(r, f)=o(T(r, f)) as r→∞ and the values a, b are replaced by small functions of f(z).