Poisson Thinning by Monotone Factors

Karen Ball (Indiana University, USA)

Abstract


Let $X$ and $Y$ be Poisson point processes on the real numbers with rates $l_1$ and $l_2$ respectively. We show that if $l_1 > l_2$, then there exists a deterministic map $f$ such that $f(X)$ and $Y$ have the same distribution, the joint distribution of $(X, f(X))$ is translation-invariant, and which is monotone in the sense that for all intervals $I$, $f(X)(I) \leq X(I)$, almost surely.

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Pages: 60-69

Publication Date: April 16, 2005

DOI: 10.1214/ECP.v10-1134

References

  1. Ball, K. Monotone factors of i.i.d. processes, to appear in the Israel J. Math. Math. Review number not available.
  2. Ferrari, P.A., Landim, C., Thorisson, H. Poisson trees, succession lines and coalescing random walks, Ann. I. H. Poincaré-PR 40 (2004), 141-152. Math. Review 2044812
  3. Holroyd, A., Peres, Y. Trees and matchings from point processes, Elect. Comm. in Probab. 8 (2003), 17-27. Math. Review 2004b:60127
  4. Keane, M., Smorodinsky, M. A class of finitary codes, Israel J. Math. 26 (1977) nos. 3-4, 352-371. Math. Review MR0450514
  5. Keane, M., Smorodinsky, M. Bernoulli schemes of the same entropy are finitarily isomorphic, Ann.Math. 109 (1979), 397-406. Math. Review 80f:28024
  6. Reiss, R.-D. A course on point processes, Springer-Verlag, New York, 1993. Math. Review 94b:60058
  7. Strassen, V. The existence of probability measures with given marginals, Ann. Math. Statist. 36 (1965), 423-439. Math. Review MR0177430
  8. Timár, Á. Tree and grid factors for general point processes, Elect. Comm. in Probab. 9 (2004), 53-59. Math. Review MR2081459


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