In this paper, we obtain the Hermite-Hadamard type inequalities for s-convex functions and m-convex functions via a generalized fractional integral, known as Katugampola fractional integral, which is the generalization of Riemann-Liouville fractional integral and Hadamard fractional integral. We show that through the Katugampola fractional integral we can find a Hermite-Hadamard inequality via the Riemann-Liouville fractional integral.
Keywords: Convex functions; Hadamard fractional integral; Hermite–Hadamard inequalities; Katugampola fractional integral; Riemann–Liouville fractional integral; m-convex functions; s-convex functions.