ANNOUNCEMENT AND CALL FOR PAPERS This is announce a new refereed electronic journal THEORY AND APPLICATIONS OF CATEGORIES The Editors, who are listed below, invite submission of articles for publication in the first volume (1995) of the journal. The Editorial Policy of the journal, basic information about subscribing and some information for authors follows. More details are available from the journal's WWW server at URL http://www.tac.mta.ca/tac/ or by anonymous ftp from ftp.tac.mta.ca in the directory pub/tac. EDITORIAL POLICY The journal Theory and Applications of Categories will disseminate articles that significantly advance the study of categorical algebra or methods, or that make significant new contributions to mathematical science using categorical methods. The scope of the journal includes: 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. Articles appearing in the journal have been carefully and critically refereed under the responsibility of members of the Editorial Board. Only papers judged to be both significant and excellent are accepted for publication. The method of distribution of the journal is via the Internet tools WWW/gopher/ftp. The journal is archived electronically and in printed paper format. 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 tac@mta.ca including a full name and postal address. For institutional subscription, send enquiries to the Managing Editor, Robert Rosebrugh, <rrosebrugh@mta.ca> INFORMATION FOR AUTHORS The typesetting language of the journal is TeX, and LaTeX is the preferred flavour. TeX source of articles for publication should be submitted by e-mail directly to an appropriate Editor. Please obtain detailed information on submission format and style files by WWW or anonymous ftp from the sites listed above. You may also write to tac@mta.ca to receive details by e-mail. EDITORIAL BOARD John Baez, University of California, Riverside baez@math.ucr.edu Michael Barr, McGill University barr@triples.math.mcgill.ca Lawrence Breen, Universite de Paris 13 breen@math.univ-paris.fr Ronald Brown, University of North Wales r.brown@bangor.ac.ik Jean-Luc Brylinski, Pennsylvania State University jlb@math.psu.edu Aurelio Carboni, University of Genoa carboni@vmimat.mat.unimi.it G. Max Kelly, University of Sydney kelly_m@maths.su.oz.au Anders Kock, University of Aarhus kock@mi.aau.dk F. William Lawvere, State University of New York at Buffalo mthfwl@ubvms.cc.buffalo.edu Jean-Louis Loday, Universite de Strasbourg loday@math.u-strasbg.fr Ieke Moerdijk, University of Utrecht moerdijk@math.ruu.nl Susan Niefield, Union College niefiels@gar.union.edu Robert Pare, Dalhousie University pare@cs.dal.ca Andrew Pitts, University of Cambridge ap@cl.cam.ac.uk Robert Rosebrugh, Mount Allison University rrosebrugh@mta.ca Jiri Rosicky, Masaryk University rosicky@math.muni.cz James Stasheff, University of North Carolina jds@charlie.math.unc.edu Ross Street, Macquarie University street@macadam.mpce.mq.edu.au Walter Tholen, York University tholen@vm1.yorku.ca R. W. Thomason, Universite de Paris 7 thomason@mathp7.jussieu.fr Myles Tierney, Rutgers University tierney@math.rutgers.edu Robert F. C. Walters, University of Sydney walters_b@maths.su.oz.au R. J. Wood, Dalhousie University rjwood@cs.da.ca