2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/142792We prove sharp Lieb-Thirring inequalities for Schroedinger operators with potentials supported on a hyperplane and we show how these estimates are related to Lieb-Thirring inequalities for relativistic Schroedinger operators.Dedicated to M. Sh. Birman on the occasion of his 80th birthdayMathematical PhysicsSpectral Theorytext