NEW REFEREED ELECTRONIC JOURNAL: THEORY AND APPLICATIONS OF CATEGORIES * Editorial Board. John Baez, Michael Barr, Lawrence Breen, Ronald Brown, Jean-Luc Brylinski, Aurelio Carboni, G. Max Kelly, Anders Kock, F. William Lawvere, Jean-Louis Loday, Ieke Moerdijk, Susan Niefield, Robert Pare, Andrew Pitts, Robert Rosebrugh, Jiri Rosicky, James Stasheff, Ross Street, Walter Tholen, R. W. Thomason, Myles Tierney, Robert F. C. Walters, R. J. Wood. * Topics. All areas of pure category theory, including higher dimensional categories; applications of category theory to algebra, geometry and topology and other areas of mathematics; applications of category theory to computer science, physics and other mathematical sciences; contributions to scientific knowledge that make use of categorical methods. * Subscription Information. Individual subscribers receive (by e-mail) abstracts of articles as they are published. Full text of published articles is available in .dvi and Postscript format. Details will be e-mailed to new subscribers and are available by WWW/gopher/ftp. To subscribe, send e-mail to email@example.com including a full name and postal address. For institutional subscription, send enquiries to the Managing Editor, Robert Rosebrugh, firstname.lastname@example.org. * Further Information. WWW, or by anonymous ftp from ftp.tac.mta.ca:pub/tac. WORKSHOP ON ADVANCES IN TYPE SYSTEMS FOR COMPUTING August 14-18, 1995, Newton Institute, Cambridge, UK * Topics. The use of typing in computing, with particular emphasis on the following three related areas: extensions of the ML type system, types in object-oriented programming, type theories for reactive systems. * Invited speakers. M Abadi, X Leroy, V Saraswat, K Bruce, D MacQueen, S Smith, L Cardelli, J Palsberg, M Tofte, R Harper, B Pierce, A Yonezawa. * Programme committee. S Abramsky, L Cardelli, J Mitchell (Chair) A Pitts, A Yonezawa. * Submissions. The organizers invite offers of contributed talks. These will be selected by the programme committee on the basis of submitted abstracts. Five copies of an abstract in English (up to 2 pages) should be sent to the program committee chairman John Mitchell (ATSC), Department of Computer Science, Stanford University, Stanford, CA 94305-2140, USA, to arrive not later than 1 April, 1995. * Grants. The conference will provide grants towards registration, travel and subsistence costs of selected young (under 35 years) participants who are citizens of a European Union Member State, or a person residing and working for at least one year in such a country. Application forms are available by ftp from ftp.newton.cam.ac.uk as pub/programmes/semATSCform.txt, or by post from Florence Leroy at the address below, and are due by April 30, 1995. * Further information, registration forms. Florence Leroy, Isacc Newton Institute, 20 Clarkson Road, Cambridge CB3 0EH. Tel: +44 1223 335984. Fax: +44 1223 330508. Email: email@example.com. UPDATE: CONF. ON THEORY AND PRACTICE OF SOFTWARE DEVELOPMENT (TAPSOFT'95) May 22-26, 1995, Univ. of Aarhus, Denmark [Call for papers appears in Newsletter 17.] * Preliminary programme. Preliminary programme, abstracts of talks, registration form obtainable electronically. WWW. FTP: ftp.brics.aau.dk, userid ftp, get pub/TAPSOFT/README. E-mail: firstname.lastname@example.org. Fax: +45 8942 3255. BRICS - TAPSOFT '95, Dept. of Computer Science, Univ. of Aarhus, Ny Munkegade Bldg. 540, DK-8000 Aarhus C, Denmark. * Satellite Meetings. TACAS (Workshop on Tools and Algorithms for Construction and Analysis of Systems, 19-20 May), TPA (Workshop on Types for Program Analysis, 26-27 May), COMPASS WG (ESPRIT BR WG, 26-27 May). UPDATE: LOGIC COLLOQUIUM 1995 August 9-17 [*new start date*], 1995, Haifa, Israel [First announcement appears in Newsletter 15.] * Invited Speakers. Tutorials: K. Compton (0-1 Laws in Finite Model Theory), S. Goldwasser (Interactive Proofs), D. Marker (Stability: From the Spectrum Problem to Geometric Stability), T. Slaman (Recent Developments Recursion Theory). Plenary lectures: H. Becker (Set Theory), P. Blackburn (Logic and Linguistics), W. Buchholz (Proof Theory), Z. Chatzidakis (Model Theory), B. Cooper (Recursion Theory), A. Dawar (Finite Model Theory), R. Downey (Recursion Theory), L. Harrington (Recursion Theory), I. Herzog (Model Theory), E. Hrushovski (Model Theory), P. King (Logic and Linguistics), J. Krajicek (Proof Theory and Complexity), J. Lynch (Finite Model Theory), P. Maddy (Set Theory: 100 years), M. Makkai (Categorical Model Theory), D. Martin (Set Theory: 100 Years), G. Moore (Set Theory: 100 Years), A. Nies (Recursion Theory), M. Rathjen (Proof Theory), M. Pentus (Logic and Linguistics), Y. Peterzil (Model Theory), A. Pillay, (Model Theory), S. Shelah (Set Theory), L. Soukup (Set Theory), A. Stolboushkin (Theoretical CS), S. Wainer (Proof Theory). * Submissions. Participants intending to present a contributed paper are requested to submit a one page abstract, preferably by e-mail to: email@example.com by April 30, 1995. * Grants. Limited number available for the participants of the following categories: graduate students in logic, participants from countries with severe foreign currency problems, and individuals without any external financial support. * Further Information. WWW. E-mail: firstname.lastname@example.org (for general information), email@example.com (for preregistration and registration), firstname.lastname@example.org (for applications for grants), email@example.com (for submitting abstracts). Correspondence: Logic Colloquium 95, Yvonne Sagi, Department of Computer Science, Technion--Israel Institute of Technology, Haifa 32000, Israel. REMINDER: INT'L CONF. ON TYPED LAMBDA CALCULI AND APPLICATIONS (TLCA'95) April 10-12, 1995, Edinburgh INTRODUCTION TO THEOREM PROVING, USING ISABELLE (COURSE) 12-14 July 1995, Cambridge, England, immediately prior to Mathematics of Program Construction (MPC '95) * Topics. The course uses lectures and practical sessions to teach students how to use the Isabelle system to perform proofs in higher-order logic. Main points: single-step proof checking; forward and backward proof; declaring types and constants; quantifier reasoning; higher-order logic in Isabelle; advanced proof tools. * Lecturer. Lawrence C Paulson, the originator of Isabelle. * Cost. 650 pounds sterling (350 pounds for academics) plus accommodation * Technical Correspondence. Lawrence C Paulson, Computer Laboratory, Pembroke Street, Cambridge CB2 3QG, England. E-mail firstname.lastname@example.org * Adminstrative Correspondence. The Registration Administrator, Programme for Industry, 1 Trumpington St, Cambridge CB2 1QA, England. Tel +44 (0)1223 302233. E-mail: email@example.com NEW BOOK: ISOMORPHISMS OF TYPES, ROBERTO DI COSMO * Full Title. Isomorphisms of types, from lambda calculus to information retrieval and language design. * Summary. This is a study of the notion of type-isomorphisms in functional languages, both from a theoretical and a practical point of view. Based on the author's PhD dissertation, it has been extensively revised, updated and provided with a completely new introduction to the topic, that makes it accessible to a wide spectrum of readers. It tries hard to provide a complete reference and discussion of all research done in this area, from the definition of confluent rewriting systems for typed lambda calculi equipped with various extensionality rules, to the characterization of isomorphisms of types in different typed calculi, to the applications to extensions of ML-style type-inference algorithms and the design of library search tools based on types. * To Order. In North America call: 1 800 777-4643 or fax to: 1 617 876-1272 or write to Birkhauser, 675 Massachusetts Ave., Cambridge, MA 02139. Outside N. America fax to 41 61 271 7666 or write to Birkhauser Verlag AG, P.O. Box 133, Klosterberg 23, CH-1040 Basel, Switzerland. Please give the ISDN number when ordering. * Further Information. References, summary and table of contents available from WWW page. * ISBN number. 0-8176-3763-X. TWELFTH INTERNATIONAL CONFERENCE ON LOGIC PROGRAMMING June 13--18, 1995, Kanagawa, Japan * Further Information. WWW, or the local arrangements chair: Dr. Mutsumi Imai, Faculty of Information Environment, Keio University, 5322 Endo, Fujisawa-shi, Kanagawa 252, Japan. Email: firstname.lastname@example.org. Phone: +81-466-47-5111 ext. 3223. Fax: +81-466-47-5350. WORKSHOP ON THEOREM PROVING WITH ANALYTIC TABLEAUX AND RELATED METHODS May 7-10, 1995, castle Rheinfels, St. Goar am Rhein, Germany * Topics. Mechanisation of reasoning with tableaux and related systems (analytic tableaux, model elimination, connection method, sequent calculi). Covered are theoretical aspects of classical and non-classical logics, as well as topics related to practical implementations. * Invited speakers. Wolfgang Bibel, Ricardo Caferra. * Program Committee. Peter Baumgartner, Krysia Broda, Marcello D'Agostino, Melvin Fitting, Ulrich Furbach, Dov Gabbay, Rajeev Gore, Jean Goubault, Reiner H"ahnle, Ryuzo Hasegawa, Rob Johnson, Thomas K"aufl, Reinhold Letz, Neil Murray, Ugo Moscato, Joachim Posegga, Peter Schmitt, Camilla Schwind, Graham Wrightson. * Local Arrangements. Ulrich Furbach, Computer Science Institute, University of Koblenz, Rheinau 1, 56075 Koblenz, Germany. Fax: ++ 49 261 9119 499. Phone: ++ 49 261 9119 433. E-mail: email@example.com. MATHEMATICAL FOUNDATIONS OF PROGRAMMING SEMANTICS, 11TH INT'L CONF (MFPS XI) March 29 - April 1, 1995, Tulane University, New Orleans, LA USA * Invited Speakers. Andreas Blass, Ed Clarke, Neil Jones, Robin Milner, John Reynolds, Robert Tennent. SEVENTH EUROPEAN SUMMER SCHOOL IN LOGIC LANGUAGE AND INFORMATION August 14-25 1995, Barcelona. * Topics. The main focus of the Summer School is the interface between logic, linguistics and computation, where it concerns the modelling of human linguistic and cognitive abilities. The 1995 School programme will include courses, workshops, and symposia covering a variety of topics within six areas of interest: Logic, Language, Computation, Logic and Computation, Computation and Language, Language and Logic. * Lecturers. Logic and Language: G Link, J van Eijck, J Jaspars, A Visser, C.Vermeulen, M Kracht, B Keller, M Kanazawa, D de Jongh, F Moltmann, C Fox, H Rott, R Cooper, M Poesio. Logic: R Jansana, I Hodkinson, J Flum, P Blackburn, M de Rijke, Y de Venema, J Font, K Devlin. Computation and Logic: D Basin, S Mathews, F Baader, G Koestler, H Barringer, D Gabbay, C Brink, L Wallen, M Marx, S Mikulas, F Baader, K Schlecta, S Biundo. Computation: M Nielsen, C Paulin-Mohring, N Jones, L Meertens, S Peyton-Jones, B Haglund. Language and Computation: E Stabler, M Johnson, R Bod, R Scha, M Moortgat, M Dalrymple, R Kaplan, B Carpenter, G Morrill, V Abrusci, R Dale, M Ellison, F verdejo, R Kempson. Language: P Miller, J Bresnan, H Verkuyl, H Clahsen, D Oehrle, J Doerre, S Manandhar, A Zaenen, L Sadler. * Further Information. ESSLLI95, GILCUB, Avda. Vallvidrera 25, 08017 Barcelona. Fax +43 3 2054656. Tlf +43 3 2033597. E-mail firstname.lastname@example.org. ORDER IN ALGEBRA AND LOGIC V 21-25 March 1995, Merton College, Oxford * Further Information. Angus Macintyre (email: email@example.com), Anne Hodgson(firstname.lastname@example.org) or Stefano Aguzzoli (email@example.com). SIXTH INT'L CONF ON CONCURRENCY THEORY (CONCUR '95) August 21-24, 1995, Philadelphia, Pennsylvania, USA * Topics. All areas of semantics, logics, and verification techniques for concurrent systems. Potential topics include, but are not limited to, process algebras, Petri nets, true concurrency, shared-memory and message-passing formalisms, operational and denotational models, programming language semantics, probabilistic and real-time processes, hybrid systems, concurrent logic and constraint programming, fairness, temporal logics, compositional analysis techniques, and verification tools. * Submissions. Uuencoded dvi or postscript (tm) files should be e-mailed to: firstname.lastname@example.org. When electronic submission is not possible, send five hardcopies of the paper to CONCUR '95, Attn: Scott Smolka, Dept. of Computer Science, SUNY at Stony Brook, Stony Brook, NY 11794-4400, USA (telephone: +1 516 632 8453; fax: +1 516 632 8334). Submissions should contain a draft of a full paper of no more than 15 typed pages accompanied by a one-page abstract. Submission deadline: 1 March 1995. * Program Committee. B. Bloom, R. Cleaveland, P. Degano, R. van Glabbeek, R. Gerth, S. Graf, J.F. Groote, C. Heitmeyer, T. Henzinger, H. Hungar, L. Jategaonkar Jagadeesan, A. Jeffrey, I. Lee (co-chair), J. Parrow, A. Rabinovitch, D. Sangiorgi, S. Schneider, A. Skou, S. Smolka (co-chair), E. Stark, B. Thomsen, M. Young. * Further Information. Plain text, dvi, and postscript versions of the Call For Papers as well as the latest information on CONCUR '95 can be obtained electronically via: e-mail: email@example.com; ftp: ftp.cis.upenn.edu (18.104.22.168) -- pub/concur95; www. LOGIC COURSEWARE: TURING'S WORLD, TARSKI'S WORLD, HYPERPROOF * Authors. Jon Barwise (firstname.lastname@example.org), John Etchemendy (email@example.com). * Tarski's World. The Macintosh version of Tarski's World is available in two ways, either alone (called "Tarski's World 4.0") or as part of the logic textbook/software package called "The Language of First-order Logic," by Barwise and Etchemendy. Tarski's World is also available for IBM-compatible computers equipped with Microsoft Windows. * Hyperproof. Hyperproof is proof system that allows the user to reason using both sentences of first-order logic and blocks world diagrams similar to those used in Tarski's World. It is an excellent companion to Tarski's World or The Language of First-order Logic. It is presently available only for the Macintosh. * Turing's World. The new version allows the user to build finite state machines and nondeterministic machines, in addition to Turing machines. It is currently available only on Macintosh. A version of Turing's World for IBM-compatible machines running Microsoft Windows is nearing completion and should be available in Spring, 1995. * Ordering Information. See the WWW page or contact the authors. UPDATE: 2ND WORKSHOP ON AUTOMATED REASONING: BRIDGING THE GAP BETWEEN THEORY AND PRACTICE April 4, 1995, University of Sheffield, England * Submission Deadline [*Extended*]. Thursday February 16th. * Topics. Researchers across the broad spectrum of automated reasoning have observed a gap between theory and practice in their area of specialization. This workshop series aims to bring together researchers from all areas of automated reasoning to address approaches to bridging this gap. The workshop also aims to foster links and facilitate cross-fertilization of ideas among researchers from various disciplines; among researchers from academia, industry and government; and between theoreticians and practitioners. The scope of the workshop will cover the full breadth and diversity of automated reasoning, including topics such as logic and functional programming; equational reasoning; deductive databases; unification and constraint solving; the application of formal methods to specifying, deriving, transforming and verifying computer systems and in particular safety-critical systems; deductive and non-deductive reasoning, including abduction, induction, nonmonotonic reasoning, and analogical reasoning; commonsense reasoning; and the wide range of topics that fall under the heading of knowledge representation and reasoning. * Format. The workshop will be structured around 3 or 4 panel sessions and will include open poster sessions. It will include sessions on "Can Automated Reasoning Bridge the Formal Methods Gap?", Alan Bundy; "Constraint Satisfaction", Barbara Smith. * Submissions. Submit a position paper by February 16th, 1995, to the programme chair at the address below. Authors either may submit three unstapled hardcopies of their paper, or may email their paper in postscript. * Correspondence. To Programme Chair: Andrew Ireland, Department of Artificial Intelligence, University of Edinburgh, 80 South Bridge, Edinburgh EH1 1HN, United Kingdom. Phone: +44 (31) 650 2721. Fax: +44 (31) 650 6516. Email: firstname.lastname@example.org. * Organizing Committee. Alan Bundy, Barry Crabtree, Alan Frisch, Roger Jones, Antony Galton, Andrew Ireland.