Examples of $d-$sets with irregular projection of Hausdorff measures

math.DS

/ Authors

/ Abstract

Given positive integers $\ell<n$ and a real $d\in (\ell,n)$, we construct sets $K\subset \mathbb R^n$ with positive and finite Hausdorff $d-$measure such that the Radon-Nikodym derivative associated to all projections on $\ell-$dimensional planes is not an $L^p$ function, for all $p>1$.

Examples of $d-$sets with irregular projection of Hausdorff measures

math.DS

/ Authors

Yuri Lima, Carlos Gustavo Moreira

/ Abstract

Given positive integers $\ell<n$ and a real $d\in (\ell,n)$, we construct sets $K\subset \mathbb R^n$ with positive and finite Hausdorff $d-$measure such that the Radon-Nikodym derivative associated to all projections on $\ell-$dimensional planes is not an $L^p$ function, for all $p>1$.