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Stochastic domination and Markovian couplings

Published online by Cambridge University Press:  01 July 2016

F. Javier López*
Affiliation:
Universidad de Zaragoza
Servet Martínez*
Affiliation:
Universidad de Chile
Gerardo Sanz*
Affiliation:
Universidad de Zaragoza
*
Postal address: Departamento de Métodos Estadísticos, Facultad de Ciencias, Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain.
∗∗ Postal address: Departamento de Ingeniería Matemática y Centro de Modelamiento Matemático UMR 2071, CNRS, Universidad de Chile, Casilla 170-3, Correo 3, Santiago, Chile. Email address: [email protected]
Postal address: Departamento de Métodos Estadísticos, Facultad de Ciencias, Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain.

Abstract

For continuous-time Markov chains with semigroups P, P' taking values in a partially ordered set, such that PstP', we show the existence of an order-preserving Markovian coupling and give a way to construct it. From our proof, we also obtain the conditions of Brandt and Last for stochastic domination in terms of the associated intensity matrices. Our result is applied to get necessary and sufficient conditions for the existence of Markovian couplings between two Jackson networks.

Type
General Applied Probability
Copyright
Copyright © Applied Probability Trust 2000 

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References

[1] Anderson, W. J. (1991). Continuous-time Markov chains. An applications-oriented approach. Springer, New York.Google Scholar
[2] Brandt, A. and Last, G. (1994). On the pathwise comparison of jump processes driven by stochastic intensities. Math. Nachr. 167, 2142.CrossRefGoogle Scholar
[3] Chen, M. F. (1992). From Markov Chains to Non-equilibrium Particle Systems. World Scientific, Singapore.Google Scholar
[4] Kamae, T., Krengel, G. and O'Brien, G. L. (1977). Stochastic inequalities on partially ordered spaces. Ann. Prob. 5, 899912.Google Scholar
[5] Keilson, J. and Kester, A. (1977). Monotone matrices and monotone Markov processes. Stoch. Proc. Appl. 5, 231241.Google Scholar
[6] Liggett, T. M. (1985). Interacting Particle Systems. Springer, New York.Google Scholar
[7] Lindvall, T. (1992). Lectures on the Coupling Method. John Wiley, New York.Google Scholar
[8] Lindvall, T. (1997). Stochastic monotonicities in Jackson queueing. Prob. Eng. Inf. Sci. 11, 19.Google Scholar
[9] Lindvall, T. (1999). On Strassen's theorem on stochastic domination. Electron. Comm. Prob. 4, 5159.Google Scholar
[10] López, F. J. and Sanz, G. (1998). Stochastic comparisons and couplings for interacting particle systems. Statist. Prob. Lett. 40, 93102.Google Scholar
[11] Massey, W.A. (1987). Stochastic orderings for Markov processes on partially ordered spaces. Math. Operat. Res. 40, 350367.Google Scholar
[12] Rockafellar, R.T. (1972). Convex Analysis, 2nd edn. Princeton University Press.Google Scholar
[13] Rudin, W. (1973). Functional Analysis. McGraw-Hill, New York.Google Scholar
[14] Stoyan, D. (1983). Comparison Methods for Queues and Other Stochastic Models. John Wiley, New York.Google Scholar
[15] Strassen, V. (1965). The existence of probability measures with given marginals. Ann. Math. Statist. 36, 423439.CrossRefGoogle Scholar
[16] Thorisson, H. (2000). Coupling, Stationarity and Regeneration. Springer, New York.CrossRefGoogle Scholar