Approximate solutions of homomorphisms and derivations of the generalized Cauchy-Jensen functional equation in $C^*$-ternary algebras

Journal of Linear and Topological Algebra

مقاله 1، دوره 09، شماره 01، خرداد 2020، صفحه 1-15   

نوع مقاله: Research Paper

نویسندگان

P. Kaskasem^{* 1}؛ C. Klin-eam²

¹Department of Mathematics, Faculty of Science Naresuan University, Phitsanulok, 65000, Thailand

²Research center for Academic Excellence in Mathematics, Naresuan University, Phitsanulok, Thailand

چکیده

In this paper, we prove Hyers-Ulam-Rassias stability of $C^*$-ternary algebra homomorphism for the following generalized Cauchy-Jensen equation
$$\eta \mu f\left(\frac{x+y}{\eta}+z\right) = f(\mu x) + f(\mu y) +\eta f(\mu z)$$
for all $\mu \in \mathbb{S}:= \{ \lambda \in \mathbb{C} : |\lambda | =1\}$ and for any fixed positive integer $\eta \geq 2$ on $C^*$-ternary algebras by using fixed poind alternative theorem. Moreover, we investigate Hyers-Ulam-Rassias stability of generalized $C^*$-ternary derivation for such function on $C^*$-algebras by the same method.

کلیدواژه‌ها

Cauchy-Jensen functional equations؛ Hyers-Ulam-Rassias stability؛ C*-ternary algebras؛ alternative fixed point theorem

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