Séminaire Gaston Darboux

Le vendredi 06 juillet 2018 à 11:15 - salle 430

Tianyi Zheng
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.

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