Z User Workshop: Proceedings of the Fourth Annual Z User Meeting Oxford, 15 December 1989

This volume contains the papers presented at the Oxford University Computing Laboratory Programming Research Group 4th Annual Z user Meeting, held on 15 December 1989 at the Oxford University. This meeting provided an opportunity for Z users to meet and to hear about the latest developments in both the theoretical and practical aspects of Z. The papers cover recent research on the formal notation of Z, with descriptions of its application in industry. Z tools and support environments are also described.