A New Factorization Property of the Selfdecomposable Probability Measures

Details A New Factorization Property of the Selfdecomposable Probability Measures A New Factorization Property of the Selfdecomposable Probability Measures

2010-09-18

arxiv.org/abs/1009.3545v1

The Annals of Probability, vol. 32(2), (2004), pp.1356-1369

Mathematics

Probability

Scientific paper

We prove that the convolution of a selfdecomposable distribution with its background driving law is again selfdecomposable if and only if the background driving law is s-selfdecomposable. We will refer to this as the \textit{factorization property} of a selfdecomposable distribution; let $L^f$ denote the set of all these distributions. The algebraic structure and various characterizations of $L^f$ are studied. Some examples are discussed, the most interesting one being given by the L\'evy stochastic area integral. A nested family of subclasses $L^{f}_n, n\ge 0,$ (or a filtration) of the class $L^f$ is given.

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