{"title":"新的一般分形度量的一些特性","authors":"Rim Achour, Bilel Selmi","doi":"10.1007/s00605-024-01979-7","DOIUrl":null,"url":null,"abstract":"<p>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 </p><span>$$\\begin{aligned} \\sum \\limits _i h^{-1}\\Big (q h\\big (\\mu \\bigl (B(x_i,r_i)\\bigl )\\big )+tg(r_i)\\Big ), \\end{aligned}$$</span><p>where <span>\\(\\mu \\)</span> represents a Borel probability measure on <span>\\(\\mathbb R^d\\)</span>, and <i>q</i> and <i>t</i> are real numbers. The functions <i>h</i> and <i>g</i> 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 <i>X</i> that is not limited to a specific context or framework.</p>","PeriodicalId":18913,"journal":{"name":"Monatshefte für Mathematik","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Some properties of new general fractal measures\",\"authors\":\"Rim Achour, Bilel Selmi\",\"doi\":\"10.1007/s00605-024-01979-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>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 </p><span>$$\\\\begin{aligned} \\\\sum \\\\limits _i h^{-1}\\\\Big (q h\\\\big (\\\\mu \\\\bigl (B(x_i,r_i)\\\\bigl )\\\\big )+tg(r_i)\\\\Big ), \\\\end{aligned}$$</span><p>where <span>\\\\(\\\\mu \\\\)</span> represents a Borel probability measure on <span>\\\\(\\\\mathbb R^d\\\\)</span>, and <i>q</i> and <i>t</i> are real numbers. The functions <i>h</i> and <i>g</i> 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 <i>X</i> that is not limited to a specific context or framework.</p>\",\"PeriodicalId\":18913,\"journal\":{\"name\":\"Monatshefte für Mathematik\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-04-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Monatshefte für Mathematik\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1007/s00605-024-01979-7\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Monatshefte für Mathematik","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1007/s00605-024-01979-7","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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。
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
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.