2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/98586We prove L^1 --> L^\infty estimates for linear Schroedinger equations in dimensions one and three. The potentials are only required to satisfy some mild decay assumptions. No regularity on the potentials is assumed.20 pages. Corrected typos and improved explanatory remarks at the endAnalysis of PDEs35Q40text