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Abstract

We establish some stability results concerning the 2-dimensional vector variable quadratic functional equation $f (x + y, z + w) + f (x - y, z - w) = 2 f (x, z) + 2 f (y, w)$ in non-Archimedean $L^{*}$ -fuzzy normed spaces.

Keywords

ℒ*-fuzzy metric and normed space Hyers-Ulam stability quadratic functional equation non-Archimedean ℒ*-fuzzy normed space

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A fixed point approach to approximate quadratic functional equation in non-Archimedean L * -fuzzy normed spaces

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