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math.DS2013
On invariant Schreier structures
Jan Cannizzo
Schreier graphs, which possess both a graph structure and a Schreier structure (an edge-labeling by the generators of a group), are objects of fundamental importance in group theor…
math.DS2013
The boundary action of a sofic random subgroup of the free group
Jan Cannizzo
We prove that the boundary action of a sofic random subgroup of a finitely generated free group is conservative. This addresses a question asked by Grigorchuk, Kaimanovich, and Nag…