Journal
INTERNATIONAL MATHEMATICS RESEARCH NOTICES
Volume 2023, Issue 13, Pages 11432-11452Publisher
OXFORD UNIV PRESS
DOI: 10.1093/imrn/rnac158
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This article examines the characteristics of Poisson processes on closed convex cones in R-d, and demonstrates that under certain conditions, they can serve as examples of decomposable E-0 semigroups that do not satisfy the CCR flow.
Let P be a closed convex cone in R-d, which we assume is pointed and spanning, i.e, P boolean AND -P = {0} and P - P = R-d. We demonstrate that, when d >= 2, in contrast to the one-parameter situation, Poisson processes on R-d, with intensity measure absolutely continuous with respect to the Lebesgue measure, restricted to P-invariant closed subsets, provide us with a source of examples of decomposable E-0-semigroups that are not always CCR f lows.
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