System of Additive Functional Equations in Banach Algebras
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Abstract
In this paper, we solve the system of functional equations f (x + y) + g(y − x) = 2f (x) g(x + y) − f (y − x) = 2g(y) and we investigate the stability of g-derivations in Banach algebras.
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- europepmc
- last seen: 2026-05-19T01:45:01.086888+00:00