[IPAM was a] great environment to work harder and more productively on graph and hypergraph theory. I listened to great talks and talked to many great mathematicians. I worked with some of them. I got new ideas and managed to implement some of them. It was enlightening and inspiring.
Alexander Kostochka, Professor of Mathematics, University of Illinois Urbana-Champaign,
and participant in the 2009 Combinatorics program.