| Applications of Category Theory to Computer Science: Mount Allison University, Sackville, NB, Canada; 8--12 June 1998. |
| Categorical Structures for Descent and Galois Theory, Hopf Algebras and Semiabelian Categories: Workshop, Fields Institute, Toronto, Canada; 23--28 September 2002. |
| Category Theory OctoberFest: McGill University, Montreal, Canada; 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. |
| CT2000: Villa Olmo, Como, Italy; 16--22 July 2000. |
| CT95: Canadian Mathematical Society Annual Seminar. Dalhousie University, Halifax, Canada; 9--15 July 1995. |
| CT99: University of Coimbra, Portugal; 19--24 July 1999. |
| 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. |
| Derived Categories and Applications: ICMS, Edinburgh, Scotland, UK; 2--7 June 2003. |
| School on Category Theory and Applications: University of Coimbra, Portugal; 13--17 July 1999. |
Classical
