Markov jump random c.d.f.'s and their posterior distributions

In this article we introduce the class of Markov jump random c.d.f.'s as a sub-class of the Q-Markov prior distributions studied in R.M. Balan [Q-Markov random probability measures and their posterior distributions, Stochastic Process. Appl. 109 (2004) 296-316]. Our main result states that if the prior distribution of a sample is a Markov jump process, then the posterior distribution can also be viewed as the distribution of a Markov jump process, whose transition mechanism and infinitesimal behavior have been updated in the light of the new data.