2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/76652A unified analytic solution to the Busemann-Petty problem was recently found by Gardner, Koldobsky and Schlumprecht. We give an elementary proof of their formulas for the inverse Radon transform.5 pagesMetric GeometryFunctional Analysis52A40, 52A38, 44A12text