Intuitionistic fuzzy stability of a quadratic functional equation

N. Ch. Kayal, P. Mondal, T. K. Samanta

The aim of this paper is to determine Hyers-Ulam-Rassias Stability results concerning the quadratic functional equation f(2x+y)+f(2x-y)=2f(x+y)+2f(x-y)+4f(x)-2f(y) in intuitionistic fuzzy Banach spaces. 

Tbilisi Mathematical Journal, Vol. 8(2) (2015), pp. 139-147