Geometry and Topology Seminar: Many polytopal realizations of generalized associahedra
13 March 2014 13:00 in CM221
Associahedra were defined independently by Tamari and Stasheff more than 50 years ago and have been rediscovered and studied in many different contexts since then. Fomin and Zelevinsky observed their relation to finite cluster algebras of type A and obtained generalized associahedra by extending their description to cluster algebras of other finite types. I will present a unified construction that yields many polytopal realizations of these objects and uses geometry and combinatorics of finite Coxeter groups.