Stability And Instability Of Additive Functional Equation In Banach And Quasi ??Normed Spaces

Abstract

In this paper, we study the generalized Hyers-Ulam stability issue for additive mappings for Banach and Quasi-? normed spaces and by methods for a counterexample, Additionally stability impacts were gotten by methods for a fixed point strategy. This technique shows that the stability is determined to have some fixed factor of a suitable administrator.