Many of the practical techniques developed for treating systems described by periodic differential equations have arisen in different fields of application; con

Six papers deal with interrelated problems of modern operator theory, complex analysis, and system theory at a level accessible to advanced mathematicians and e

Discrete-time systems arise as a matter of course in modelling biological or economic processes. For systems and control theory they are of major importance, pa

This book offers a comprehensive treatment of the theory of periodic systems, including the problems of filtering and control. It covers an array of topics, pre