A note on the Hausdorff dimension of uniformly non flat sets with plenty of big projections
arXiv:2109.10087
Abstract
Using a recent result of Orponen (Invent. math. '21), we show that sets with plenty of big projections (PBP) admit an Analyst's Travelling Salesman Theorem. We then show that sets with PBP which are uniformly non-flat (or wiggly) have large Hausdorff dimension. We also obtain a corollary on analytic/Lipschitz harmonic capacities.
14 pages. V2: the corollary on Hausdorff dimension was incorrectly stated in the first version. Also, added a corollary on analytic and Lipschitz harmonic capacity. This preprint will be superseded by an upcoming work with D. Dabrowski