Workshop on Algebraic K-theory, algebraic homotopy, and global actions Mathematics Division, School of Informatics, University of Wales, Bangor January 4-12, 2000 This workshop is the next in a series of Bangor/Bielefeld workshops which have formed part of a British Council/ARC programme in collaboration with Prof A Bak (Bielefeld). Colleagues outside Bangor/Bielefeld are welcome to participate at their own costs. The matters for lectures and discussion will include the following and their interactions (i) Global actions and groupoid atlases (ii) Homotopy limits and colimits (iii) Generalised dimension theory for categories (iv) Related topics Participants (as of December 3) Bangor Ronnie Brown Tim Porter Chris Wensley Anne Heyworth Jan Snellman (Stockholm and Bangor) Emma Moore Bielefeld Tony Bak Arun Munkur Rooz Hazrat Niko Inassaridze (Tbilisi, Bangor) . Background Bak's theory of Global Actions gives a framework for an algebraic approach to higher Algebraic K-theory, and in fact has more general applications. This framework has been generalised in joint work with Bangor to the notion of Groupoid Atlas. There have emerged from previous workshops links between single domain global actions and recent work in Geometric Group Theory, including complexes of groups, higher generation by subgroups, and identities among relations for presentations. Enquiries to: Prof R Brown r.brown@bangor.ac.uk We can give lists of local B&B and hotels. Prof R. Brown, School of Mathematics, University of Wales, Bangor Dean St., Bangor, Gwynedd LL57 1UT, United Kingdom Tel. direct:+44 1248 382474|office: 382475 fax: +44 1248 361429 World Wide Web: home page: http://www.bangor.ac.uk/~mas010/ (Links to survey articles: Higher dimensional group theory Groupoids and crossed objects in algebraic topology) Symbolic Sculpture and Mathematics: http://www.bangor.ac.uk/SculMath/ Mathematics and Knots: http://www.bangor.ac.uk/ma/CPM/exhibit/welcome.htm