Hermite-Hadamard-type inequalities for interval-valued preinvex functions via Riemann-Liouville fractional integrals

Abstract

In this paper, we introduce (h1, h2) -preinvex interval-valued function and establish the Hermite-Hadamard inequality for preinvex interval-valued functions by using interval-valued Riemann-Liouville fractional integrals. We obtain Hermite-Hadamard-type inequalities for the product of two interval-valued functions. Further, some examples are given to confirm our theoretical results. 2021, The Author(s).