Sharp moderate maximal inequalities for upward skip-free Markov chains

Chen Jia

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arXiv · 1803.01120

Sharp moderate maximal inequalities for upward skip-free Markov chains

Chen Jia

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Abstract

The $L^p$ maximal inequalities for martingales are one of the classical results in probability theory. Here we establish the sharp moderate maximal inequalities for upward skip-free Markov chains, which include the $L^p$ maximal inequalities as special cases. Furthermore, we apply our theory to two specific examples and obtain their moderate maximal inequalities: the first one is the M/M/1 queue and the second one is an upward skip-free Markov chain with large death jumps. These two examples have the same total birth and death rates. However, the former exhibits a phase transition phenomenon while the latter does not.

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Chen Jia. 2018-03-03. Sharp moderate maximal inequalities for upward skip-free Markov chains. https://arxiv.org/abs/1803.01120

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