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An $\alpha$-number characterization of $L^{p}$ spaces on uniformly rectifiable sets

Classical Analysis and ODEs 2023-06-28 v1 Analysis of PDEs

Abstract

We give a characterization of Lp(σ)L^{p}(\sigma) for uniformly rectifiable measures σ\sigma using Tolsa's α\alpha-numbers, by showing, for 1<p<1<p<\infty and fLp(σ)f\in L^{p}(\sigma), that fLp(σ)(0(αfσ(x,r)+fx,rασ(x,r))2 drr)12Lp(σ). \lVert f\rVert_{L^{p}(\sigma)}\sim \left\lVert\left(\int_{0}^{\infty} \left(\alpha_{f\sigma}(x,r)+|f|_{x,r}\alpha_{\sigma}(x,r)\right)^2\ \frac{dr}{r} \right)^{\frac{1}{2}}\right\rVert_{L^{p}(\sigma)}.

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Cite

@article{arxiv.2009.10111,
  title  = {An $\alpha$-number characterization of $L^{p}$ spaces on uniformly rectifiable sets},
  author = {Jonas Azzam and Damian Dąbrowski},
  journal= {arXiv preprint arXiv:2009.10111},
  year   = {2023}
}

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23 pages