2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/76400The Tits alternative for Out(F_n) is reduced to the case where all elements in the subgroup under consideration grow polynomially.107 pages, published versionGeometric TopologyThe Tits alternative for Out(F_n) I: Dynamics of exponentially-growing automorphismstext