2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/58229The basic adiabatic theorems of classical and quantum mechanics are over-viewed and an adiabatic theorem in quantum mechanics without a gap condition is described.Talk at QMath 7, Prague, 1998. 10 pages, 7 figuresMathematical PhysicsSpectral Theorytext