2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/119203We prove that Gevrey regularity is propagated by the Boltzmann equation with Maxwellian molecules, with or without angular cut-off. The proof relies on the Wild expansion of the solution to the equation and on the characterization of Gevrey regularity by the Fourier transform.18 pagesAnalysis of PDEs76P05text