Hermite-Hadamard type inequalities for s-convex and s-concave functions via fractional integrals

New identity for fractional integrals have been defined. By using of this identity, some new Hermite-Hadamard type inequalities for Riemann-Liouville fractional integral have been developed. Our results have some relationships with the result of Avci et al., proved in AKO.
Comment: 9 pages