Realization of the amenable radical by a random-walk subgroup

Let GG be a finitely generated group. For a probability measure μ\mu on GG, let AμA_\mu denote the associated subgroup, and let the amenable radical be the largest amenable normal subgroup of GG. Amenable-radical realization conjecture. There exists some probability measure μ\mu on GG such that

Aμ=the amenable radical of G.A_\mu=\text{the amenable radical of }G.

This is presented as a stronger or more desirable formulation concerning whether the amenable radical can be exactly recovered from a suitable random walk. The supplied text does not specify additional conditions on μ\mu or give evidence that the conjecture has been resolved.

Sources & referencesView supporting material

Primary source

Murray Elder and Cameron Rogers, “On a theorem of Avez”, arXiv:1605.04065 (2017).

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