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Asymptotic strong Feller property and local weak irreducibility via generalized couplings
Oleg Butkovsky, Fabrice Wunderlich · 2019-12-13 · via math.PR updates on arXiv.org

In this short note we show how the asymptotic strong Feller property (ASF) and local weak irreducibility can be established via generalized couplings. We also prove that a stronger form of ASF together with local weak irreducibility implies uniqueness of an invariant measure. The latter result is optimal in a certain sense and complements some of the corresponding results of Hairer, Mattingly (2008).

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