Delay differential equations driven by Levy processes: stationarity and Feller properties

Details Delay differential equations driven by Levy processes: stationarity and Feller properties Delay differential equations driven by Levy processes: stationarity and Feller properties

2005-05-31

arxiv.org/abs/math/0505684v1

Mathematics

Probability

28 pages

Scientific paper

We consider a stochastic delay differential equation driven by a general Levy process. Both, the drift and the noise term may depend on the past, but only the drift term is assumed to be linear. We show that the segment process is eventually Feller, but in general not eventually strong Feller on the Skorokhod space. The existence of an invariant measure is shown by proving tightness of the segments using semimartingale characteristics and the Krylov-Bogoliubov method. A counterexample shows that the stationary solution in completely general situations may not be unique, but in more specific cases uniqueness is established.

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