English

Hausdorff dimension of wiggly metric spaces

Metric Geometry 2015-06-15 v2

Abstract

For a compact connected set XX\subseteq \ell^{\infty}, we define a quantity β(x,r)\beta'(x,r) that measures how close XX may be approximated in a ball B(x,r)B(x,r) by a geodesic curve. We then show there is c>0c>0 so that if β(x,r)>β>0\beta'(x,r)>\beta>0 for all xXx\in X and r<r0r<r_{0}, then dimX>1+cβ2\dim X>1+c\beta^{2}. This generalizes a theorem of Bishop and Jones and answers a question posed by Bishop and Tyson.

Keywords

Cite

@article{arxiv.1303.7305,
  title  = {Hausdorff dimension of wiggly metric spaces},
  author = {Jonas Azzam},
  journal= {arXiv preprint arXiv:1303.7305},
  year   = {2015}
}

Comments

Corrected several errors and typos, improved exposition