Refinement

John Derrick works in the field of formal methods and software engineering. He has interests across a range of subjects including: refinement, verification of concurrent algorithms, integrated formal methods, testing, and distributed systems. He has published over 140 journal and conference articles, edited a number of collected works and research monographs. He currently works at the University of Sheffield, where he is Vice President and Head of the Faculty of Science.Eerke Boiten has been doing research in formal methods for 30 years, working on topics such as program transformation, viewpoint specification, and in particular: refinement. He has published some 70 refereed journal articles and conference papers as well as a research monograph in this area. In recent years, he has branched out into computer security and privacy, and engages widely on those topics beyond the academic circles. He is currently Professor of Cyber Security at De Montfort University, Leicester, UK.

• Semantics.- Labeled Transition Systems and their Refinement.- Automata - introducing simulations.- Simple State Based Refinement.- A Relational View of Refinement.- Perspicuity, Divergence, and Internal Operations.- Refinement in Specification Languages.- State-based Languages: Z and B.- State-based Languages: Event-B and ASM.- Relating Notions of Refinement.- Relational Concurrent Refinement.- Relating Data Refinement and Failures-divergences Refinement.- Process data types - a fully general model of concurrent refinement.