Contents i The Theory and Practice of Concurrency A.W. Roscoe Published 1997, revised to 2000 and lightly revised to 2005. The original version is in print in April 2005 with Prentice-Hall (Pearson). This version is made available for personal reference only. This version is copyright ( c �) Pearson and Bill Roscoe. Contents Preface ix 0 Introduction 1 0.1 Background 1 0.2 Perspective 4 0.3 Tools