Solution and two types of Ulam-Hyers stability of n􀀀 dimensional cubic-quartic functional equation in intuitionistic normed spaces

Abstract

In this paper, the authors investigate the generalized Ulam-Hyers stability of n− dimensional cubic-quartic functional equationwhere r is a positive integer with r = ±0, 1 in the setting of intuitionistic fuzzy normed spaces using direct and fixed point methods.