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In this paper, we determine the stability of a generalized Hyers-Ulam-Rassias-type theorem concerning the additive functional equation 2f(x+y+z2)=f(x)+f(y)+f(z)Open image in new window in the framework of intuitionistic fuzzy normed spaces through the fixed-point alternative. Further, we prove some stability results of an additive functional equation in this setup through the direct method.

Stability of functional equation obtained through a fixed-point alternative in intuitionistic fuzzy normed spaces