On multifractality and time subordination for continuous functions

Details On multifractality and time subordination for continuous functions On multifractality and time subordination for continuous functions

2008-04-11

arxiv.org/abs/0804.1887v1

Mathematics

Functional Analysis

Scientific paper

We show that if $Z$ is "homogeneously multifractal" (in a sense we precisely define), then $Z$ is the composition of a monofractal function $g$ with a time subordinator $f$ (i.e. $f$ is the integral of a positive Borel measure supported by $\zu$). When the initial function $Z$ is given, the monofractality exponent of the associated function $g$ is uniquely determined. We study in details a classical example of multifractal functions $Z$, for which we exhibit the associated functions $g$ and $f$. This provides new insights into the understanding of multifractal behaviors of functions.

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