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Characterization of local dimension functions of subsets of d

L. Olsen — 2005

Colloquium Mathematicae

For a subset E d and x d , the local Hausdorff dimension function of E at x is defined by d i m H , l o c ( x , E ) = l i m r 0 d i m H ( E B ( x , r ) ) where d i m H denotes the Hausdorff dimension. We give a complete characterization of the set of functions that are local Hausdorff dimension functions. In fact, we prove a significantly more general result, namely, we give a complete characterization of those functions that are local dimension functions of an arbitrary regular dimension index.

Typical multifractal box dimensions of measures

L. Olsen — 2011

Fundamenta Mathematicae

We study the typical behaviour (in the sense of Baire’s category) of the multifractal box dimensions of measures on d . We prove that in many cases a typical measure μ is as irregular as possible, i.e. the lower multifractal box dimensions of μ attain the smallest possible value and the upper multifractal box dimensions of μ attain the largest possible value.

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