In 1996 the International Federation for Information Processing (IFIP) establ- hed its rst Technical Committee on foundations of computer science, TC1. The aim of IFIP TC1 is to support the development of theoretical computer science as a fundamental science and to promote the exploration of fundamental c- cepts, models, theories, and formal systems in order to understand laws, limits, and possibilities of information processing. This volume constitutes the proceedings of the rst IFIP International C- ference on Theoretical Computer Science (IFIP TCS 2000) { Exploring New Frontiers of Theoretical Informatics { organized by IFIP TC1, held at Tohoku University, Sendai, Japan in August 2000. The IFIP TCS 2000 technical program consists of invited talks, contributed talks, and a panel discussion. In conjunction with this program there are two special open lectures by Professors Jan van Leeuwen and Peter D. Mosses. The decision to hold this conference was made by IFIP TC1 in August 1998, and since then IFIP TCS 2000 has bene ted from the e orts of many people; in particular, the TC1 members and the members of the Steering Committee, the Program Committee, and the Organizing Committee of the conference. Our special thanks go to the Program Committee Co-chairs: Track (1): Jan van Leeuwen (U. Utrecht), Osamu Watanabe (Tokyo Inst. Tech.) Track (2): Masami Hagiya (U. Tokyo), Peter D. Mosses (U. Aarhus).

This book constitutes the refereed proceedings of the Third International Symposium on Theoretical Aspects of Computer Software, TACS'97, held in Sendai, Japan, in September 1997. The book presents 20 revised full papers selected from a total of 46 submissions. Also included are seven invited papers by internationally leading scientists. Among the topics addressed are action calculi, polymorphisms, type theory, lambda calculi, refinement, finite transition systems, model checking, process algebras, logical frameworks, higher-order logics, etc.

This book presents the refereed proceedings of the International Workshop on Parallel Symbolic Languages and Systems, PSLS '95, held in Beaune, France, in October 1995.
The 21 full papers included in the book were carefully selected for presentation at the meeting and thoroughly revised afterwards. Parallel symbolic computing has gained in importance for high-performance computing; in recent years, many applications have been implemented using C, C++, and their parallel extensions. This volume is organized in sections on evaluation strategies, programming tools, irregular data structures and applications, systems, and distributed models and systems.

This volume presents the proceedings of the First International Workshop on Theory and Practice of Parallel Programming, TPPP '94, held in Sendai, Japan in November 1994.
Besides 9 full paper versions of the invited talks by prominent speakers, 15 revised contributed papers were selected for inclusion in this volume. TPPP '94 focused on theoretical foundations of parallel languages and parallel programming, related implementation issues, and practical applications. Among the topics covered are models of computation, logic, proof, specification of programs, semantics of languages, implementation of languages and systems, and architectural support for parallellism and massively parallel computation.

Parallel and distributed computing are becoming increasingly important as cost-effective ways to achieve high computational performance. Symbolic computations are notable for their use of irregular data structures and hence parallel symbolic computing has its own distinctive set of technical challenges. The papers in this book are based on presentations made at a workshop at MIT in October 1992. They present results in a wide range of areas including: speculative computation, scheduling techniques, program development tools and environments, programming languages and systems, models of concurrency and distribution, parallel computer architecture, and symbolic applications.

TACS'91 is the first International Conference on Theoretical Aspects of Computer Science held at Tohoku University, Japan, in September 1991. This volume contains 37 papers and an abstract for the talks presented at the conference. TACS'91 focused on theoretical foundations of programming, and theoretical aspects of the design, analysis and implementation of programming languages and systems. The following range of topics is covered: logic, proof, specification and semantics of programs and languages; theories and models of concurrent, parallel and distributed computation; constructive logic, category theory, and type theory in computer science; theory-based systems for specifying, synthesizing, transforming, testing, and verifying software.

This volume is a collection of papers on topics focused around concurrency, based on research work presented at the UK/Japan Workshop held at Wadham College, Oxford, September 25-27, 1989. The volume is organized into four parts: - Papers on theoretical aspects of concurrency which reflect strong research activities in the UK, including theories on CCS and temporal logic RDL. - Papers on object orientation and concurrent languages which reflect major research activities on concurrency in Japan. The languages presented include extensions of C, Prolog and Lisp as well as object-based concurrent languages. - Papers on parallel architectures and VLSI logic, including a rewrite rule machine, a graph rewriting machine, and a dataflow architecture. - An overview of the workshop including the abstracts of the talks and the list of participants. The appendix gives a brief report of the first UK/Japan Workshop in Computer Science, held at Sendai, Japan, July 6-9, 1987.

This volume presents the proceedings of a workshop at which major Parallel Lisp activities in the US and Japan were explained. Work covered includes Multilisp and Mul-T at MIT, Qlisp at Stanford, Lucid and Parcel at Illinois, PaiLisp at Tohoku University, Multiprocessor Lisp on TOP-1 at IBM Tokyo Research, and concurrent programming in TAO. Most papers present languages and systems of Parallel Lisp and are in particular concerned with: - Language constructs of Parallel Lisp and their meanings from the standpoint of implementing Parallel Lisp systems; - Some important technical issues such as parallel garbage collection, dynamic task partitioning, futures and continuations in parallelism, automatic parallelization of Lisp programs, and the kernel concept of Parallel Lisp. Some performance results are reported that suggest practical applicability of Parallel Lisp systems in the near future. Several papers on concurrent object-oriented systems are also included.