Oberwolfach, Germany.

Centre for Experimental and Constructive Mathematics, Simon Fraser University, Canada.

American Institute of Mathematics, Palo Alto, CA.

Institute of Mathematics "Simion Stoilow" of the Romanian Academy.

An international consortium of research institutes in the mathematical sciences that run thematic research programs and have large visitor programs. IMSI meetings are normally held in conjunction with major international meetings and provide a forum for developing cooperation among the member institutions.

Euler Institute for Discrete Mathematics and its Applications: Eindhoven, Twente and Delft, The Netherlands.

Applied Mathematics Laboratory, Courant Institute, New York University, NY.

AT&T Laboratories, Murray Hill, NJ.

Stefan Banach International Mathematical Center, Warsaw, Poland.

Centre de Recerca Matemàtica, Barcelona, Catalonia, Spain.