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Fuzzy stability of a mixed type functional equationKeywords: fuzzy normed space , fuzzy almost quadratic-additive mapping , mixed type functional equation Abstract: In this paper, we investigate a fuzzy version of stability for the functional equation f ( x + y + z ) - f ( x + y ) - f ( y + z ) - f ( x + z ) + f ( x ) + f ( y ) + f ( z ) = 0 in the sense of Mirmostafaee and Moslehian. 1991 Mathematics Subject Classification. Primary 46S40; Secondary 39B52.
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