机构:
PSL Res Univ, CNRS, Dept Math & Applicat, Ecole Normale Super, 45 Rue Ulm, F-75005 Paris, FrancePSL Res Univ, CNRS, Dept Math & Applicat, Ecole Normale Super, 45 Rue Ulm, F-75005 Paris, France
Cuno, Johannes
[1
]
Sava-Huss, Ecaterina
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机构:
Graz Univ Technol, Inst Discrete Math, Steyrergasse 30-3, A-8010 Graz, AustriaPSL Res Univ, CNRS, Dept Math & Applicat, Ecole Normale Super, 45 Rue Ulm, F-75005 Paris, France
Sava-Huss, Ecaterina
[2
]
机构:
[1] PSL Res Univ, CNRS, Dept Math & Applicat, Ecole Normale Super, 45 Rue Ulm, F-75005 Paris, France
We consider random walks on non-amenable Baumslag-Solitar groups BS(p, q) and describe their Poisson-Furstenberg boundary. The latter is a probabilistic model for the long-time behaviour of the random walk. In our situation, we identify it in terms of the space of ends of the Bass-Serre tree and the real line using Kaimanovich's strip criterion.