English

Intermediate dimensions of slices of compact sets

Classical Analysis and ODEs 2025-11-07 v2

Abstract

θ\theta intermediate dimensions are a continuous family of dimensions that interpolate between Hausdorff and Box dimensions of fractal sets. In this paper we study the problem of the relationship between the dimension of a set ERdE\subset\mathbb{R}^d and the dimension of the slices EVE\cap V from the point of view of intermediate dimensions. Here VG(d,m)V\in G(d,m), where G(d,m)G(d,m) is the set of mm-dimensional subspaces of Rd\mathbb{R}^d. We obtain upper bounds analogous to those already known for Hausdorff dimension. In addition, we prove several corollaries referring to, among other things, the continuity of these dimensions at θ=0\theta=0, a natural problem that arises when studying them. We also investigate which conditions are sufficient to obtain a lower bound that provides an equality for almost all slices. Finally, a new type of Frostman measures is introduced. These measures combine the results already known for intermediate dimensions and Frostman measures in the case of Hausdorff dimension.

Keywords

Cite

@article{arxiv.2502.10376,
  title  = {Intermediate dimensions of slices of compact sets},
  author = {Angelini Nicolas and Molter Ursula},
  journal= {arXiv preprint arXiv:2502.10376},
  year   = {2025}
}

Comments

This paper has been withdrawn due to critical errors in the proofs of the slicing theorems, which invalidate the main results