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Small sets containing any pattern
Mathematical Proceedings of the Cambridge Philosophical Society ( IF 0.8 ) Pub Date : 2018-07-31 , DOI: 10.1017/s0305004118000567
URSULA MOLTER , ALEXIA YAVICOLI

Given any dimension function h, we construct a perfect set E${\mathbb{R}}$ of zero h-Hausdorff measure, that contains any finite polynomial pattern.This is achieved as a special case of a more general construction in which we have a family of functions $\mathcal{F}$ that satisfy certain conditions and we construct a perfect set E in ${\mathbb{R}}^N$, of h-Hausdorff measure zero, such that for any finite set {f1,. . .,fn} ⊆ $\mathcal{F}$, E satisfies that $\bigcap_{i=1}^n f^{-1}_i(E)\neq\emptyset$.We also obtain an analogous result for the images of functions. Additionally we prove some related results for countable (not necessarily finite) intersections, obtaining, instead of a perfect set, an $\mathcal{F}_{\sigma}$ set without isolated points.

中文翻译:

包含任何模式的小集合

给定任何维度函数H, 我们构造一个完美的集合${\mathbb{R}}$H-Hausdorff 测度,包含任何有限多项式模式。这是作为更一般构造的特例实现的,其中我们有一系列函数$\数学{F}$满足某些条件,我们构造一个完美的集合${\mathbb{R}}^N$, 的H-Hausdorff 测度为零,使得对于任何有限集 {F1,. . .,Fn} ⊆$\数学{F}$,满足$\bigcap_{i=1}^nf^{-1}_i(E)\neq\emptyset$.对于函数的图像,我们也得到了类似的结果。此外,我们证明了可数(不一定是有限)交集的一些相关结果,获得,而不是完美集合,$\mathcal{F}_{\sigma}$设置没有孤立点。
更新日期:2018-07-31
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