This book describes the direct and inverse problems of the multidimensional Schrödinger operator with a periodic potential, a topic that is especially importan

The book describes the direct problems and the inverse problem of the multidimensional Schrödinger operator with a periodic potential. This concerns perturbati

The book is devoted to perturbation theory for the Schrödinger operator with a periodic potential, describing motion of a particle in bulk matter. The Bloch ei