HERMITE–HADAMARD-TYPE INEQUALITIES FOR s-PREINVEX INTERVAL-VALUED FUNCTIONS VIA GENERALIZED FRACTIONAL INTEGRALS

This paper is dedicated to establishing some Hermite–Hadamard-type inequalities for [Formula: see text]-preinvex interval-valued functions by using the generalized Riemann–Liouville fractional integrals. The results not only generalize some known findings in the literature, but also contribute to deeper research on inequalities concerning interval-valued fractional integrals. Additionally, some examples are given to illustrate the effectiveness of the results.