## The Annals of Probability

### Splitting at Backward Times in Regenerative Sets

Olav Kallenberg

#### Abstract

By a backward time is meant a random time which only depends on the future, in the same sense as a stopping time only depends on the past. We show that backward times taking values in a regenerative set $M$ split $M$ into conditionally independent subsets. The conditional distributions of the past may further be identified with the Palm distributions $P_t$ with respect to the local time random measure $\xi$ of $M$ both a.e. $E\xi$ and wherever $\{P_t\}$ has a continuous version. Continuity of $\{P_t\}$ occurs essentially where $E\xi$ has a continuous density, and the latter continuity set may be described rather precisely in terms of the growth rate and regularity properties of the Levy measure of $M$.

#### Article information

Source
Ann. Probab., Volume 9, Number 5 (1981), 781-799.

Dates
First available in Project Euclid: 19 April 2007

https://projecteuclid.org/euclid.aop/1176994308

Digital Object Identifier
doi:10.1214/aop/1176994308

Mathematical Reviews number (MathSciNet)
MR628873

Zentralblatt MATH identifier
0526.60061

JSTOR