Séminaire Gaston Darboux :

Le 06 juillet 2018 à 11:15 - salle 430

Présentée par Zheng Tianyi - UC San Diego

Growth of the first Grigorchuk group

On the first Grigorchuk group we construct random walks of finite entropy and power-law tail decay with non-trivial Poisson boundary. Such random walks provide near optimal volume lower estimates for the group. Joint with Anna Erschler.