2018
DOI: 10.1007/s10959-018-0859-4
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Multiple Points of Operator Semistable Lévy Processes

Abstract: We determine the Hausdorff dimension of the set of k-multiple points for a symmetric operator semistable Lévy process X = {X(t), t ∈ R + } in terms of the eigenvalues of its stability exponent. We also give a necessary and sufficient condition for the existence of k-multiple points. Our results extend to all k ≥ 2 the recent work [23], where the set of double points (k = 2) was studied in the symmetric operator stable case.2010 Mathematics Subject Classification. 60J25, 60J30, 60G51, 60G17.

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Cited by 3 publications
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“…In recent years the fractal path behavior of semistable Lévy processes has been investigated, complementing previous classical results for their stable counterparts. It turned out that in terms of fractal dimension (mainly Hausdorff dimension) the range, the graph and multiple points of the sample paths almost surely are not affected by the log-periodic perturbations [9,10,19,30], even in terms of exact Hausdorff measure [11]. Nevertheless, semistable Lévy processes show a different behavior when turning from fractality to fractionality.…”
Section: Introductionmentioning
confidence: 99%
“…In recent years the fractal path behavior of semistable Lévy processes has been investigated, complementing previous classical results for their stable counterparts. It turned out that in terms of fractal dimension (mainly Hausdorff dimension) the range, the graph and multiple points of the sample paths almost surely are not affected by the log-periodic perturbations [9,10,19,30], even in terms of exact Hausdorff measure [11]. Nevertheless, semistable Lévy processes show a different behavior when turning from fractality to fractionality.…”
Section: Introductionmentioning
confidence: 99%