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The focus of this workshop was the development of mathematically-based techniques of formal specification of system behaviour, and the systematic development of implementations. The aim is to produce correct, efficient implementations in a reliable fashion. Topics covered at the workshop include category theory, logic, domain theory, semantics, concurrency, specification and verification. The papers published here range from the purely theoretical to practical applications.
This volume contains the proceedings of the third workshop of the Theory and Formal Methods Section of the Department of Computing, Imperial College, London. It covers various topics in theoretical computer science. Formal specification, theorem proving, operational and denotational semantics, real number computation, computational measure theory, and neural networks are all represented. Contents:A Smooth Approximation on the Edge of Chaos (P J Potts)Gamma and the Logic of Transition Traces (S J Gay & C L Hankin)The Generalized Riemann Integral on Locally Compact Spaces (A Edalat & S Negri)Specifications as Spans of Geometric Morphisms (T Plewe)A Semantic View on Distributed Computability and Complexity (E Goubault)Process Algebra for Object-Oriented Specification (S J Liebert)Type Inference for a Typed Process Calculus (R Harmer)On an Algebraic Flavoring of the Logical Approach (T Dimitrakos)Extending B AMN with Concurrency (K Lano et al.)Full Abstraction by Translation (G McCusker)Syntactic Continuity from Structural Operational Semantics (D Sands)Ordered SOS Rules and Weak Bisimulation (I Phillips & I Ulidowksi)and other papers Readership: Graduate students and researchers in computer science.
This book constitutes a refereed post-workshop selection of papers presented at the 6th International Workshop on Computer-Aided Systems Theory, EUROCAST'97, held in Las Palmas de Gran Canaria, Spain, in February 1997. The 50 revised full papers presented were carefully selected for inclusion in the volume. The book is divided into sections on design environments and tools, theory and methods, engineering systems, intelligent systems, signal processing, and specific methods and applications.
This book presents a collection of revised refereed papers selected from the contributions to the Fifth International Workshop on Computer Aided Systems Theory, EUROCAST '95, held in Innsbruck, Austria in May 1995. The 42 full papers contained have been contributed by CAST theoreticians, tool-makers, designers, and appliers and reflect the full spectrum of activities in the area. The papers are organized in sections on systems theory, design environments, complex systems design, and specific applications.
This volume contains the proceedings of the fIrst workshop held by the Theory and Formal Methods Section ofthe Imperial College Department of Computing. It contains papers from almost every member of the Section, from our long-term academic visitors, and from those who have recently left us. The papers fall into four broad areas: • semantics • concurrency • logic • specification with some papers spanning a number of disciplines. The subject material varies from work on mathematical foundations to practical applications of this theory, expressing the Section's commitment to both the foundations of computer science, and the application of theory to real computing problems. In preparing the workshop and these proceedings, care was taken to ensure that there were papers overviewing a field, as well as ones whose primary aim was to present new scientifIc results. This had a dual purpose: to bring our Section members up to speed in some of the areas being worked on by the Section; and to provide the reader of the proceedings not only with a good introduction to many of the specifIc areas being investigated by the Section, but also with details of some of our latest results. All the papers presented at the workshop were revised following comments made by the workshop participants, and all were subsequently reviewed by at least two people before producing the fInal versions contained in this volume.
This book constitutes the refereed proceedings of the Eighth International Symposium on Programming Languages, Implementations, Logics, and Programs, PLILP '96, held in conjunction with ALP and SAS in Aachen, Germany, in September 1996. The 30 revised full papers presented in the volume were selected from a total of 97 submissions; also included are one invited contribution by Lambert Meerlens and five posters and demonstrations. The papers are organized in topical sections on typing and structuring systems, program analysis, program transformation, implementation issues, concurrent and parallel programming, tools and programming environments, lambda-calculus and rewriting, constraints, and deductive database languages.
This book is a minor revision of the thesis submitted in August 1996; no major changes have been made. However, I would like to take this opportunity to mention that since the thesis was written, discoveries have been made which would allow a substantial simplification and strengthening of the results in Chapters 3 and 6. In particular, it is now possible to model sums correctly in the category I as well as in £, which means that the definability results of Chapter 6 can be stated and proved at the intensional level, making them simpler and much closer in spirit to the original proofs of Abramsky, Jagadeesan, Malacaria, Hyland, Ong and Nickau [10,61,79]. This also leads quite straightforwardly to an understanding of call-by-value languages. Details of these improvements can be found in [14,73]. It is also worth mentioning that progress has been made on some of the topics suggested for future research in Chapter 7. In particular, fully abstract models have been found for various kinds of languages with local variables [8,13-16], and a fully complete games model of the polymorphic language System F has been constructed by Hughes [59]. Guy McCusker February 1998 Acknowledgements First of all, I must thank my supervisor, Samson Abramsky. It was he who first introduced me to game semantics and suggested avenues of research in the area; this book would certainly not exist were it not for him.
This book constitutes the refereed proceedings of the 5th International Conference on Typed Lambda Calculi and Applications, TLCA 2001, held in Krakow, Poland in May 2001. The 28 revised full papers presented were carefully reviewed and selected from 55 submissions. The volume reports research results on all current aspects of typed lambda calculi. Among the topics addressed are type systems, subtypes, coalgebraic methods, pi-calculus, recursive games, various types of lambda calculi, reductions, substitutions, normalization, linear logic, cut-elimination, prelogical relations, and mu calculus.
A brief survey of the major DBMS and HeI conference proceedings over the past 10 years will reveal isolated pockets of research in database user interfaces but little sense of being swept along with the general advances in DBMS technology and Hel. New data models have evolved to meet the needs of different application domains; persistent programming languages are blurring the traditional distinction between data definition and application programming languages; distribution and inter-operability have become issues as have the storage of heterogeneous media types; yet it is still rare to read of the HeI issues raised by these technological innovations being expressly addressed and rarer still to find recognition of the usability problems with longer-established database technologies. There are at least two reasons why this should be surprising: • Database systems are not like other computer systems; existing both as back-ends to other applications and as stand-alone data stores, they are typically slow, deal with very large volumes of data and can involve all sorts of security, confidentiality and even cooperability issues. • Databases are everywhere. Perhaps only word processors and spread sheets are more widespread. In addition, as business cultures change and personal computing continues to mould expectations, end-users find themselves interacting increasingly closely with database systems.