It's not category theory, but you might anyway be interested in... THE RANKIN LECTURES 2008 The Rankin Lectures 2008 will be given by John Baez (University of California, Riverside). The series title is "My Favorite Numbers" and the individual lecture titles are Mon 15 September, 4pm: "5" Wed 17 September, 4pm: "8" Fri 19 September, 4pm: "24". They will be held at the University of Glasgow, and are supported by the Glasgow Mathematical Journal Trust. Information and abstracts can be found at http://www.maths.gla.ac.uk/~tl/rankin/ If you can come, you'd be very welcome to visit for the week and chat - there should be some like-minded people about. As it's a lecture series rather than a conference, there are no travel funds and we're not organizing accommodation, but you can find practical information on visiting at www.maths.gla.ac.uk . Best wishes, Tom -- Tom Leinster <tl@maths.gla.ac.uk>