2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/223460We prove the uniqueness of the maximizers of a Hardy-Littlewood type functional under constraints. We also establish a quantitative stability estimate. Introduction7 PagesOptimization and Control14J32Quantitative Stability Estimate of the Hardy-Littlewood Functional Under Constraintstext