2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/127051We prove that if d is an integer number bigger than 1 and f_1,...,f_d are commuting circle diffeomorphisms respectively of class C^(1+τ_k), where τ_1 + ... + τ_k > 1, then these maps are simultaneously conjugate to rotations provided that their rotation numbers are independent over the rationals.14 pages, 4 figuresDynamical Systemstext