• Title/Summary/Keyword: Hewitt-Stromberg measure

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REGULARITIES OF MULTIFRACTAL HEWITT-STROMBERG MEASURES

  • Attia, Najmeddine;Selmi, Bilel
    • Communications of the Korean Mathematical Society
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    • v.34 no.1
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    • pp.213-230
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    • 2019
  • We construct new metric outer measures (multifractal analogues of the Hewitt-Stromberg measure) $H^{q,t}_{\mu}$ and $P^{q,t}_{\mu}$ lying between the multifractal Hausdorff measure ${\mathcal{H}}^{q,t}_{\mu}$ and the multifractal packing measure ${\mathcal{P}}^{q,t}_{\mu}$. We set up a necessary and sufficient condition for which multifractal Hausdorff and packing measures are equivalent to the new ones. Also, we focus our study on some regularities for these given measures. In particular, we try to formulate a new version of Olsen's density theorem when ${\mu}$ satisfies the doubling condition. As an application, we extend the density theorem given in [3].

NOTE ON THE MULTIFRACTAL MEASURES OF CARTESIAN PRODUCT SETS

  • Attia, Najmeddine;Guedri, Rihab;Guizani, Omrane
    • Communications of the Korean Mathematical Society
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    • v.37 no.4
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    • pp.1073-1097
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    • 2022
  • In this paper, we shall be concerned with evaluation of multifractal Hausdorff measure 𝓗q,t𝜇 and multifractal packing measure 𝓟q,t𝜇 of Cartesian product sets by means of the measure of their components. This is done by investigating the density result introduced in [34]. As a consequence, we get the inequalities related to the multifractal dimension functions, proved in [35], by using a unified method for all the inequalities. Finally, we discuss the extension of our approach to studying the multifractal Hewitt-Stromberg measures of Cartesian product sets.