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Pocket groups and random walks on them

Monday, March 1, 2021 - 11:00am

Speaker:   Laurent Saloff-Coste, Cornell University

Abstract:   "Pocket groups" is how the speaker and co-author Tianyi Zheng calls a simple class of groups obtained from a construction that is rather simple-minded but not particularly familiar to most of us. This construction associates to a given countable group G another (bigger) group G*. There are similarities with the better known "lamplighter group" construction. In this talk, I will describe this construction and some basic results regarding random walk on these groups.

This is joint work with Tianyi Zheng, San Diego.