Applied Functional Analysis

Focusing on functional analysis within Hilbert spaces, this book explores its applications in system optimization, control systems, and systems analysis. It reflects a growing trend towards practical applications of mathematics, particularly in economics and system science, influenced by the increasing use of digital computers. The second edition includes corrections and new material, thanks to collaborative efforts with colleagues. It serves as a vital resource for advanced graduate students in these fields, bridging theoretical concepts with real-world applications.