This meeting will take place in conjunction with the Joint Mathematics Meetings, which will be held January 7--10, 2004. The members of the Program Committee are V. Harizanov, J. Steel, and C. Wood (Chair). Invited speakers include: M. Foreman, S. Jackson, B. Kim, J. Knight, R. W. Knight, S. Lempp, Y. Peterzil, F. Point, L. Shulman, and S. Solecki. There will be an AMS-ASL Joint Special Session on Infinite Combinatorics and Inner Model Theory, organized by M. D. Foreman and M. Zeman.