2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/164035The flag curvature of the Numata Finsler structures is shown to admit a nontrivial prolongation to the one-dimensional case, revealing an unexpected link with the Schwarzian derivative of the diffeomorphisms associated with these Finsler structures.LaTeX, 4 pages. Reference added. To appear in Advances in Pure and Applied MathematicsMathematical PhysicsDifferential Geometrytext