Geometric criteria for $C^{1,\alpha}$ rectifiability
Abstract
We prove criteria for $\mathcal{H}^k$rectifiability of subsets of $\mathbb{R}^n$ with $C^{1,\alpha}$ maps, $0<\alpha\leq 1$, in terms of suitable approximate tangent paraboloids. We also provide a version for the case when there is not an a priori tangent plane, measuring on dyadic scales how close the set is to lying in a $k$plane. We then discuss the relation with similar criteria involving Peter Jones' $\beta$ numbers, in particular proving that a sufficient condition is the boundedness for small $r$ of $r^{\alpha}\beta_p(x,r)$ for $\mathcal{H}^k$a.e. $x$ and for any $1\leq p\leq \infty$.
 Publication:

arXiv eprints
 Pub Date:
 September 2019
 arXiv:
 arXiv:1909.10625
 Bibcode:
 2019arXiv190910625D
 Keywords:

 Mathematics  Classical Analysis and ODEs;
 28A75;
 28A78;
 26A16