Abstract
We define and study the concept of non-Archimedean intuitionistic fuzzy normed space by using the idea of
t
-norm and
t
-conorm. Furthermore, by using the non-Archimedean intuitionistic fuzzy normed space, we investigate the stability of various functional equations. That is, we determine some stability results concerning the Cauchy, Jensen and its Pexiderized functional equations in the framework of non-Archimedean IFN spaces.