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arXiv · 1110.6805

On the Mattila-Sjolin theorem for distance sets

Alex Iosevich·Mihalis Mourgoglou·Krystal Taylor
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Abstract

We extend a result, due to Mattila and Sjolin, which says that if the Hausdorff dimension of a compact set $E \subset {\Bbb R}^d$, $d \ge 2$, is greater than $\frac{d+1}{2}$, then the distance set $Δ(E)=\{|x-y|: x,y \in E \}$ contains an interval. We prove this result for distance sets $Δ_B(E)=\{{||x-y||}_B: x,y \in E \}$, where ${|| \cdot ||}_B$ is the metric induced by the norm defined by a symmetric bounded convex body $B$ with a smooth boundary and everywhere non-vanishing Gaussian curvature. We also obtain some detailed estimates pertaining to the Radon-Nikodym derivative of the distance measure.

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Alex Iosevich, Mihalis Mourgoglou, Krystal Taylor. 2011-10-31. On the Mattila-Sjolin theorem for distance sets. https://arxiv.org/abs/1110.6805

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