Hyperstability results for a generalized radical cubic functional equation related to additive mapping in non-Archimedean Banach spaces
2018
The aim of this paper is to introduce and solve the following generalized radical cubic functional equation
$$\begin{aligned} f\left( \root 3 \of {\sum _{i=1}^{k}x_{i}^{3}}\right) =\sum _{i=1}^{k}f(x_{i}),\quad k\in \mathbb {N}_{2}. \end{aligned}$$
We also investigate some hyperstability results for this equation in non-Archimedean Banach spaces.
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