A consistent Markov partition process generated from the paintbox process

Details A consistent Markov partition process generated from the paintbox process A consistent Markov partition process generated from the paintbox process

2011-07-12

arxiv.org/abs/1107.2413v1

Mathematics

Probability

20 pages; J. Appl. Probab. 2011, 48 (3)

Scientific paper

We study a family of Markov processes on $\mathcal{P}^{(k)}$, the space of partitions of the natural numbers with at most $k$ blocks. The process can be constructed from a Poisson point process on $\mathbb{R}^+\times\prod_{i=1}^k\mathcal{P}^{(k)}$ with intensity $dt\otimes\varrho_{\nu}^{(k)}$, where $\varrho_{\nu}$ is the distribution of the paintbox based on the probability measure $\nu$ on $\masspartition$, the set of ranked-mass partitions of 1, and $\varrho_{\nu}^{(k)}$ is the product measure on $\prod_{i=1}^k\mathcal{P}^{(k)}$. We show that these processes possess a unique stationary measure, and we discuss a particular set of reversible processes for which transition probabilities can be written down explicitly.

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