2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/67089We give a semiclassical analysis of a nonlinear eigenvalue problem arising from the study of the failure of analytic hypoellipticity and obtain a general family of hypoelliptic, but not analytic hypoelliptic operators.Analysis of PDEsSpectral TheorySemiclassical analysis of a nonlinear eigenvalue problem and non analytic hypoellipticitytext