THIRD ANNOUNCEMENT INTERNATIONAL CATEGORY THEORY CONFERENCE (CT04) July 18-24, 2004 University of British Columbia Vancouver, Canada This conference will be held on the University of British Columbia campus. It will begin with a reception at 6pm on Sunday July 18, 2004, and will end at 1pm on Saturday July 24, 2004. All those interested in category theory and its applications are welcome. The CT04 website is http://www.pims.math.ca/science/2004/CT04 You will find all information about Registration and Accommodation there, as well as a link to Visitor Information. Currently we are trying to make a preliminary estimate of the number of people who will be attending the conference for the purpose of booking lecture rooms and in order to provide an estimate to catering services. If you will or may attend and have not already indicated this to me by email, then please send a note to johnm@math.ubc.ca with the words "will attend" or "may attend", as appropriate. Some important deadlines are as follows: Graduate student requests for support of accommodation costs - March 15, 2004. A maximum of 5 such requests will be granted. Note that PIMS has no other support available to anyone for accommodation, registration or travel. Abstracts - May 31, 2004. Please use the form from the website. Registration Deposit or Early Registration payment - May 31, 2004 Accommodation - June 18, 2004. After this date the block of rooms reserved for CT04 will be released to the general public, although reservations can still be made if space is available. Early booking is recommended, especially for those with accompanying persons. Extra spaces for the excursion or banquet for accompanying persons - June 30, 2004. The excursion and banquet for delegates is included in the conference fee. CT04 Advisory Committee: Jiri Adamek, Braunschweig Michael Barr, Montreal Eduardo Dubuc, Buenos Aires Marco Grandis, Genoa George Janelidze, Capetown Michael Johnson, Sydney P. T. Johnstone, Cambridge F. W. Lawvere, Buffalo S. Niefield, Schenectady T. Porter, Bangor Jiri Rosicky, Brno Phil Scott, Ottawa Robert Seely, Montreal Art Stone, Vancouver Ross Street, Sydney Enrico Vitale, Louvain Walter Tholen, Toronto R. J. Wood, Halifax This conference is being organized with the help of the Pacific Institute of Mathematics(PIMS}. Please let me know of any errors, omissions or suggestions for changes that you may have. John MacDonald, Vancouver