Nonsingular transformations and dimension spaces

For any adic transformation $T$ defined on the path space $X$ of an ordered Bratteli diagram, endowed with a Markov measure $μ$, we construct an explicit dimension space (which corresponds to a matrix values random walk on $\mathbb{Z}$) whose Poisson boundary can be identified as a $\mathbb{Z}$-space with the dynamical system $(X,μ,T)$. We give a couple of examples to show how dimension spaces can be used in the study of nonsingular transformations.

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