taylor@hplabsc.UUCP (01/16/87)
PLEASE POST PLEASE DISTRIBUTE Categories in Computer Science and Logic June 14 - 20, 1987, University of Colorado, Boulder A Joint Summer Research Conference in the Mathematical Sciences, sponsored by AMS-IMS-SIAM, and contingent on funding by the NSF. Category theory has had important uses in logic since the invention of topos theory sixteen years ago, and logic has always been an important component of theoretical computer science. What is new is the increasing direct interaction between category theory and computer science. The aim of this conference is to bring together researchers who are working on the interconnections between category theory and computer science or between category theory and logic. The conference will emphasize how the general machinery developed in category theory can be applied to specific questions and utilized for category-theoretic studies of concrete issues. There is a kernel of topics relevant to all three fields. It includes, for example, algebraic theories, Horn logic, lambda calculus, normal form reductions, and categorical models for computability theory. Such topics will be the central focus of the conference, but time will also be provided for category-theoretic topics presently related either to logic or to computer science. On the logic side, these include semantical (algebraic or topos-theoretic) approaches to proof-theoretic questions, problems concerning the internal properties of specific objects in (pre-) topoi and their representations, and categorical sharpening of model-theoretic notions. Category theory is useful in studying the proof theory and model theory of various non-classical logics as well as classical first order logic. At the base of many uses of topos theory is the fact that certain involved mathematical objects (frequently described in terms of equivariance or continuity in additional parameters) may be viewed as the interpretation, in a suitable category, of objects of a simpler nature. On the computer science side, it has recently been recognized that category theory is appropriate for formalizing many aspects of computer programming and program design. One reason for this is that in computer science it is necessary to consider many different structures at the same time. These structures must be viewed from different aspects and the interactions between them are a central component of program design. Category theory is specifically designed to deal with this kind of a situation on an abstract level. Specific areas where active research is going on include: semantics of programming languages, data type specifications, categorical programming , and categorical logic. The program will consist of invited lectures plus contributed talks that will be arranged on the first day of the conference. The invited speakers are H. P. Barendregt M. Hyland R. L. Constable J. Lambek P. Freyd F. W. Lawvere J.-Y. Girard A. Nerode J. Goguen J. Reynolds G. Huet Organizing Committee: A. Blass University of Michigan J. W. Gray University of Illinois at Urbana-Champaign M. Makkai McGill University A. Pitts University of Sussex A. Scedrov University of Pennsylvania D. Scott Carnegie-Mellon University Those interested in attending should send the following information to Carole Kohanski, Summer Research Conference Coordinator American Mathematical Society, P.O. Gox 6248 Providence, RK 02940 Please type or print the following: 1. Title and dates of conference 2. Full name 3. Mailing address 4. Telephone number and area code for office and home. 5. Your scientific background relevant to the topic of the conference 6. Financial assistance requested. Please estimate cost of travel. 7. Indicate if support is not required, and if interested in attending even if support is not offered. The deadline for receipt of applications in March 2, 1987. For further information, see the October issue of the Notices of the American Mathematical Society, p. 836. For information about the scientific program, contact John W. Gray Departments of Mathematics and Computer Science University of Illinois 1409 W. Green St. Urbana, Il, 61801 Tel. (217) 333 1468 gray@a.cs.uiuc.edu