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Centered densities and fractal measures. (English) Zbl 1112.28004

Summary: We have collected definitions and basic results for the (centered ball) density in metric space with respect to an arbitrary Hausdorff function. We have kept the definitions general: we do not assume the Hausdorff functions are continuous or blanketed, and we do not assume the metric space is a subset of Euclidean space. We discuss the covering measure (= centered Hausdorff measure) and packing measure defined from these densities.

MSC:

28A78 Hausdorff and packing measures
28A80 Fractals
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