2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/141951Using relative oscillation theory and the reducibility result of Eliasson, we study perturbations of quasiperiodic Schroedinger operators. In particular, we derive relative oscillation criteria and eigenvalue asymptotics for critical potentials.Spectral TheoryMathematical Physics34C10; 34B24text