Meromorphic Function Sharing Two Small Functions with Its Derivative

In this paper, we deal with the problem of uniqueness of meromorphic functions that share two small functions with their derivatives, and obtain the following result which improves a result of Yao and Li: Let f(z) be a nonconstant meromorphic function, k > 5 be an integer. If f(z) and g(z) = share the value 0 CM, and share b(z) IM, , fg, where , and b(z) are small functions of f(z).