Abstract:Using direct method, Kenary (Acta Universitatis Apulensis, to appear) proved the Hyers-Ulam stability of the following functional equationin non-Archimedean normed spaces and in random normed spaces, where m, n are different integers greater than 1. In this article, using fixed point method, we prove the Hyers-Ulam stability of the above functional equation in various normed spaces.
“…During the last seven decades, the stability problems of a variety of functional equations in quite a lot of spaces have been broadly investigated by number of mathematicians [3,5,8,12,15,17,22,27,32,34,36,39,42].…”
In this paper, we introduce and investigate the generalized Ulam-Hyers stability of a quattuorvigintic functional equation in various Banach spaces using two methods.
“…During the last seven decades, the stability problems of a variety of functional equations in quite a lot of spaces have been broadly investigated by number of mathematicians [3,5,8,12,15,17,22,27,32,34,36,39,42].…”
In this paper, we introduce and investigate the generalized Ulam-Hyers stability of a quattuorvigintic functional equation in various Banach spaces using two methods.
“…The stability of Equation (2) was studied by Kenary et.al. 7 via fixed point approach. It was Park 14 who investigated the stabilization of functional equations in complete 2-normed spaces.…”
In this article, the stabilization of following cubic and quadratic functional equations is studied in complete 2-normed space for a mapping h from a normed linear space into a complete 2-normed space.
“…the general solution and generalized Hyers-Ulam stability were established by Chang and Kim [2]. By a direct method of fixed points, Kenary et al [15] obtained the generalized Hyers-Ulam stability for a quadratic functional equation…”
The purpose of this article is to generalize the theory of stability of functional equations to the case of n‐Banach spaces. In this article, we prove the generalized Hyers–Ulam stabilities of the Cauchy functional equations, Jensen functional equations and quadratic functional equations on n‐Banach spaces.
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