Uniqueness of f nP(f) and [f nP(f)](k) Concerning Weakly Weighted Sharing

Abstract

In this paper, with the help of idea of weakly weighted sharing introduced by Lin-Lin [10], we study the uniqueness of a polynomial expression f ⁿP(f) and [f ⁿP(f)]^(k) of a meromorphic function f sharing a small function. The main result significantly improves the result of Molla-Basir Ahamad [23].