DS McCormick, JC Robinson, JL Rodrigo - arXiv preprint arXiv:1303.6351, 2013 - arxiv.org
Using elementary arguments based on the Fourier transform we prove that for $1\leq q<
p<\infty $ and $ s\geq 0$ with $ s> n (1/2-1/p) $, if $ f\in L^{q,\infty}(\R^ n)\cap\dot {H}^ s (\R …