2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/136816We study a class of higher-order KdV equations. We show that the associated initial value problem is well posed in weighted Besov and Sobolev spaces for small initial data. We also prove ill-posedness results when in H^s(\R), for any real s.27 pagesAnalysis of PDEs35Q53text