Abstract

In this paper, we consider sufficient conditions for the boundedness of every solution of fractional order fuzzy integral equations. Some examples are given to illustrate our results.

Highlights

  • The concept of fuzzy derivative was first introduced by Chang and Zadeh [1]

  • Authors considered the boundedness of solutions of the fuzzy differential equation x (t) = f t, x(t), t ∈ R+ = [0, +∞), (1.2)

  • The purpose of this paper is to investigate the boundedness of solutions of the following fuzzy functional integral equation with fractional order: t x(t) = (t – s)q–1 G1(t, s)x(s) + G2(t, s)x θ (s) ds + f (t), (1.3)

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Summary

Introduction

The concept of fuzzy derivative was first introduced by Chang and Zadeh [1]. Kaleva [2], Puri and Ralescu [3] introduced the notion of fuzzy derivative as an extension of the Hukuhara derivative and the fuzzy integral, which was the same as that proposed by Dubois and Prade [4]. It was proved in [9] that the boundedness of solutions of the following fuzzy integral equation: t x(t) = G(t, s)x(s) ds + f (t), (1.1) The purpose of this paper is to investigate the boundedness of solutions of the following fuzzy functional integral equation with fractional order: t x(t) = (t – s)q–1 G1(t, s)x(s) + G2(t, s)x θ (s) ds + f (t), (1.3)

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