This book gives an account of the necessary background for group algebras and crossed products for actions of a group or a semigroup on a space and reports on s

This book provides a very elementary introduction to K-theory for C*-algebras, and is ideal for beginning graduate students.

This book is directed towards graduate students that wish to start from the basic theory of C*-algebras and advance to an overview of some of the most spectacul

This book constitutes a first- or second-year graduate course in operator theory. It is a field that has great importance for other areas of mathematics and phy

These notes are based on the course of lectures I gave at Harvard in the fall of 1964. They constitute a self-contained account of vector bundles and K-theory a