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arXiv · 0903.1066

On approximate cubic homomorphisms

M. Eshaghi Gordji·M. Bavand Savadkouhi
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Abstract

In this paper, we investigate the generalized Hyers--Ulam--Rassias stability of the system of functional equations $$f(xy)=f(x)f(y), \qquad\qquad. f(2x+y)+f(2x-y)=2f(x+y)+2f(x-y)+12f(x), $$ on Banach algebras. Indeed we establish the superstability of above system by suitable control functions.

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M. Eshaghi Gordji, M. Bavand Savadkouhi. 2009-03-05. On approximate cubic homomorphisms. https://arxiv.org/abs/0903.1066

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