English

On the tube-occupancy of sets in $\mathbb{R}^d$

Classical Analysis and ODEs 2016-02-02 v2

Abstract

Call a pair (s,t)[0,d]×[0,d](s,t) \in [0,d] \times [0,d] admissible, if there exists a compact set KRdK \subset \mathbb{R}^{d} and a constant C>0C > 0 such that 0<Hs(K)<0 < \mathcal{H}^{s}(K) < \infty, and Hs(KT)Cw(T)t\mathcal{H}_{s}(K \cap T) \leq Cw(T)^{t} for all tubes TRdT \subset \mathbb{R}^{d} of width w(T)w(T). The purpose of this paper is to show that all pairs (s,s)(s,s) with s<1s < 1 are admissible. Combined with previous results, this settles a question of A. Carbery.

Keywords

Cite

@article{arxiv.1311.7340,
  title  = {On the tube-occupancy of sets in $\mathbb{R}^d$},
  author = {Tuomas Orponen},
  journal= {arXiv preprint arXiv:1311.7340},
  year   = {2016}
}

Comments

15 pages. v2: referee comments incorporated, to appear in IMRN