Some extensions of the Tumura-Clunie theorem

There are many applications and extensions on the Tumura-Clunie theorem. Generalizing a result of Weissenborn we prove that, for any meromorphic function f(z) and any differential polynomial P[f] of weight less than n, either the inequality holds or there exists a small function a(z) related to f(z) such that We also consider the case where the degree of P[f] is less than n.