arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1203.0686math.CA
收藏

度量空间的豪斯多夫维数与立方体上的Lipschitz映射

Hausdorff dimension of metric spaces and Lipschitz maps onto cubes

Tamás Keleti, András Máthé, Ondřej Zindulka

摘要:

证明了一个豪斯多夫维数大于$k$的紧致度量空间(更一般地说,完备可分度量空间的解析子集)总是可以通过Lipschitz映射映射到一个$k$维立方体上.我们还表明,这并不适用于任意可分的度量空间。作为一个应用程序,我们基本上回答了一个问题的Urbaidski表明,超限豪斯多夫维数(介绍了他)的分析子集$A$的一个完整的可分度量空间是整数部分的$\dim_H A$如果$\dim_H A$是有限的,但不是一个整数,$\dim_H A$或$\dim_H A-1$如果$\dim_H A$是一个整数,至少$ω_0$如果$\dim_H A=\infty$。

英文摘要:

We prove that a compact metric space (or more generally an analytic subset of a complete separable metric space) of Hausdorff dimension bigger than $k$ can be always mapped onto a $k$-dimensional cube by a Lipschitz map. We also show that this does not hold for arbitrary separable metric spaces. As an application we essentially answer a question of Urbański by showing that the transfinite Hausdorff dimension (introduced by him) of an analytic subset $A$ of a complete separable metric space is the integer part of $\dim_H A$ if $\dim_H A$ is finite but not an integer, $\dim_H A$ or $\dim_H A-1$ if $\dim_H A$ is an integer and at least $ω_0$ if $\dim_H A=\infty$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑