Reverse Hermite-Hadamard's inequalities using \(\psi \)-fractional integral

Our purpose in this paper is to use ψ − Riemann-Liouville fractional integral operator which is the fractional integral of any function with respect to another increasing function to establish some new fractional integral inequalities of Hermite-Hadamard, involving concave functions. Using the concave functions, we establish some new fractional integral inequalities related to the Hermite-Hadamard type inequalities via ψ − Riemann-Liouville fractional integral operator.