## Enveloping semigroups of system of order $d$

Type:
Site:
Date:
29/05/2013 - 15:00 - 16:00
Salle:
P3-037
Orateur:
DONOSO Sébastian
Résumé:

In this talk we present new relations between a minimal topological dynamical system and its enveloping semigroup. By using the Host-Kra-Maass cube structure we show that a $d$-step nilsystem has a $d$-step nilpotent enveloping semigroup.