Canonical systems occupy a central position in the spectral theory of second order differential operators. They may be used to realize arbitrary spectral data,

Canonical systems occupy a central position in the spectral theory of second order differential operators. They may be used to realize arbitrary spectral data,

This book treats some basic topics in the spectral theory of dynamical systems, where by a dynamical system we mean a measure space on which a group of automorp

The central topic of this book is the spectral theory of bounded and unbounded self-adjoint operators on Hilbert spaces. After introducing the necessary prerequ

This volume is dedicated to V. A. Marchenko on the occasion of his 90th birthday. It contains refereed original papers and survey articles written by his collea