Abstract
We prove a new transience criterion for Markov chains on an arbitrary state space and give a corollary for real-valued chains. We show by example that in the case of a homogeneous random walk with infinite mean the proposed sufficient conditions are close to those necessary. We give a new proof of the well-known criterion for finiteness of the supremum of a random walk.
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Denisov, D.E., Foss, S.G. On Transience Conditions for Markov Chains and Random Walks. Siberian Mathematical Journal 44, 44–57 (2003). https://doi.org/10.1023/A:1022008203109
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DOI: https://doi.org/10.1023/A:1022008203109