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Asymptotic strong Feller property and local weak irreducibility via generalized couplings

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).

preprint2020arXivOpen access
Oleg ButkovskyFabrice Wunderlich
math.PR
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Oleg ButkovskyFabrice Wunderlich

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