Shift of a Meromorphic Function Sharing Three Values with Its First Derivative

In the paper, we deal with the uniqueness problem of a shift of a meromorphic function that shares three values CM with its first derivative, and obtain two results. Our first result improves the recent result of Qi et al. [1] by dropping the assumption on the order of f , and our second result reduces the lower bound of n of another result of Qi et al. [1]. Moreover, we exhibit two examples to show that our results are the best possible.