Filomat, cilt.40, sa.6, ss.1991-2010, 2026 (SCI-Expanded, Scopus)
We prove a fractional Hermite-Hadamard-Mercer inequality via ψ-Hilfer integral operators for the class of h−convex functions, where h is a B-function. Some novel fractional inequalities related to the left and right sides of the Hermite-Hadamard-Mercer inequalities are established for differentiable mappings whose absolute values of the derivatives are h−convex. Moreover, we construct new inequalities for these differentiable functions using Hölder’s inequality.