most citedStability of generalized mixed type additive-quadratic-cubic functional equation in non-Archimedean spaces

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math.CA2009

On approximate cubic homomorphisms

M. Eshaghi Gordji, M. Bavand Savadkouhi

In this paper, we investigate the generalized Hyers--Ulam--Rassias stability of the system of functional equations $$f(xy)=f(x)f(y), \qquad\qquad. f(2x+y)+f(2x-y)=2f(x+y)+2f(x-y)+1…