For fractal branch profinite groups, the f-invariant of the associated dynamical system equals log|G1|-r_D(G), and groups with equal f and equal Hausdorff dimension yield isomorphic Markov processes over free semigroups.
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Markov processes associated to fractal branch groups
For fractal branch profinite groups, the f-invariant of the associated dynamical system equals log|G1|-r_D(G), and groups with equal f and equal Hausdorff dimension yield isomorphic Markov processes over free semigroups.