An Advanced Study of Hermite–Hadamard and Trapezoid-Type Inequalities via Generalized Convexity and Fractional Double Integral Operators. Eur. J. Pure Appl. Math. [Internet]. 2026 Feb. 16 [cited 2026 Feb. 17];19(1):7345. Available from: https://www.ejpam.com/index.php/ejpam/article/view/7345