新的一般分形度量的一些特性

Rim Achour, Bilel Selmi
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引用次数: 0

摘要

在这项研究中,我们采用了一种综合方法来解决多分形和分形分析问题。通过考虑涉及某些函数和变量的和,我们为一般豪斯多夫和堆积度量引入了一个新定义。具体来说,我们探讨了$$\begin{aligned}形式的和。\sum \limits _i h^{-1}\Big (q h\big (\mu \bigl (B(x_i,r_i)\bigl )\big )+tg(r_i)\Big ), \end{aligned}$$ 其中 \(\mu \)表示\(\mathbb R^d\)上的伯尔概率度量,q 和 t 是实数。函数 h 和 g 是预先确定的,在我们提出的内在定义中起着重要作用。我们的观察发现,估计 Hausdorff 和 packing 预度量要比估计精确的 Hausdorff 和 packing 度量容易得多。因此,探索 Hausdorff 和 packing 预度量与其相应度量之间的关系是自然而必要的。这一研究构成了本文的首要目标。此外,本文的次要目的是确定,在有限预度量的情况下,它们在度量空间 X 中具有一种形式的外部正则性,而这种正则性并不局限于特定的背景或框架。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Some properties of new general fractal measures

In this research, we adopt a comprehensive approach to address the multifractal and fractal analysis problem. We introduce a novel definition for the general Hausdorff and packing measures by considering sums involving certain functions and variables. Specifically, we explore the sums of the form

$$\begin{aligned} \sum \limits _i h^{-1}\Big (q h\big (\mu \bigl (B(x_i,r_i)\bigl )\big )+tg(r_i)\Big ), \end{aligned}$$

where \(\mu \) represents a Borel probability measure on \(\mathbb R^d\), and q and t are real numbers. The functions h and g are predetermined and play a significant role in our proposed intrinsic definition. Our observation reveals that estimating Hausdorff and packing pre-measures is significantly easier than estimating the exact Hausdorff and packing measures. Therefore, it is natural and essential to explore the relationships between the Hausdorff and packing pre-measures and their corresponding measures. This investigation constitutes the primary objective of this paper. Additionally, the secondary aim is to establish that, in the case of finite pre-measures, they possess a form of outer regularity in a metric space X that is not limited to a specific context or framework.

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