Veranstaltungskalender

The cyclic sieving phenomenon (CSP) was introduced in 2004 by Reiner, Stanton and White and generalizes Stembridge\\'s q=-1 phenomenon. It appears in various contexts and in particular in Coxeter-Catalan combinatorics: for example, several instances of the CSP can be found in the context of non-crossing partitions associated to Coxeter groups. I will define the CSP in general and will give several examples. Moreover, I will introduce a less known instance of the CSP on non-crossing partitions using the Kreweras complement and will relate it to a new instance on non-nesting partitions which can be associated to crystallographic Coxeter groups.

www.iazd.uni-hannover.de/oberseminar.html

Dr. Christian Stump (Université du Québec à Montréal, Kanada)

Institut für Algebra, Zahlentheorie und Diskrete Mathematik

Dienstag, 06. April 2010, 15:15 bis 17:00 Uhr

Hauptgebäude (Gebäude 1101, a410)
Welfengarten 1, 30177 Hannover

StandortFinder - so finden Sie zu Ihrer Veranstaltung