PSSL71 - Peripatetic Seminar on Sheaves and Logic. UCL, Louvain-la-Neuve, Belgium; 16--17 October 1999.CatMAT 2000 - Categorical Methods in Algebra and Topology - Commemorating 25 years of Category Theory in Bremen. University of Bremen, Germany; 21--25 August 2000.
CT99 - University of Coimbra, Portugal; 19--24 July 1999.
School on Category Theory and Applications - University of Coimbra, Portugal; 13--17 July 1999.
CT95 - Canadian Mathematical Society Annual Seminar. Dalhousie University, Halifax, Canada; 9--15 July 1995.
CTCS'97 - 7th conference on Category Theory and Computer Science. S. Margherita Ligure, Italy; 4--6 September 1997.
CTCS'99 - 8th conference on Category Theory and Computer Science. Edinburgh, Scotland, UK; 10--12 September 1999.
Applications of Category Theory to Computer Science - Mount Allison University, Sackville, NB, Canada; 8--12 June 1998.
Category Theory OctoberFest - McGill University, Montreal, Canada; 16--17 October 1999.
CT2000 - Villa Olmo, Como, Italy; 16--22 July 2000.
Union College Conference on Algebraic Topology and Category Theory - Union College, Schenectady, NY, USA; 29--30 September 2001.