2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/132362Levy flights and subdiffusive processes and their properties are discussed. We derive the space- and time-fractional transport equations, and consider their solutions in external potentials. An extensive list of references is included.36 pages, 15 figures, REVTeX, Review articleStatistical Mechanicstext