Incremental moments and Hölder exponents of multifractional multistable processes

Details Incremental moments and Hölder exponents of multifractional multistable processes Incremental moments and Hölder exponents of multifractional multistable processes

2010-01-18

arxiv.org/abs/1001.3130v3

Mathematics

Probability

Scientific paper

Multistable processes, that is, processes which are, at each "time", tangent to a stable process, but where the index of stability varies along the path, have been recently introduced as models for phenomena where the intensity of jumps is non constant. In this work, we give further results on (multifractional) multistable processes related to their local structure. We show that, under certain conditions, the incremental moments display a scaling behaviour, and that the pointwise exponent is, as expected, lower than the localisability index.

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