Enveloping semigroups of system of order $d$

Orateur: Sebastian DONOSO
Type: Séminaire des doctorants
Site: UPEC
Salle: P3-037
Date de début: 29/05/2013 - 15:00
Date de fin: 29/05/2013 - 15:00

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.