Fuzzy Korovkin type Theorems via deferred Cesaro and deferred Euler equi-statistical convergence

Abstract

We establish a fuzzy Korovkin type approximation theorem by using \(eq-stat^{D}_{CE}\)(deferred Ces\'{a}ro and deferred Euler equi-statistical) convergence proposed by Saini et al. for continuous functions over \([a,b]\). Further, we determine the rate of convergence via fuzzy modulus of continuity.

Keywords

• Korovkin theorem
• fuzzy number
• $eq-stat^{D}_{CE}$
• fuzzy positive linear operators
• fuzzy modulus of continuity