Sawyer-type weak inequality for the multilinear maximal operator with rectangular weights

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Let 1≤p1,…,pm<∞1\leq p_1,\dots,p_m<\infty and define pp by

1p=1p1+⋯+1pm.\frac{1}{p}=\frac{1}{p_1}+\dots+\frac{1}{p_m}.

Let w1,…,wmw_1,\dots,w_m and ν\nu be weights such that (w1,…,wm,ν)∈AP⃗R(w_1,\dots,w_m,\nu)\in A_{\vec P}^{\mathcal R}, and let vv be a weight satisfying νvp∈A∞\nu v^p\in A_{\infty}. Sawyer-type conjecture. There exists a constant C>0C>0 such that

∥M(f⃗)v∥Lp,∞(νvp)≤C∏i=1m∥fi∥Lpi,1(wi)\left\|\frac{\mathcal M(\vec f)}{v}\right\|_{L^{p,\infty}(\nu v^p)}\leq C\prod_{i=1}^m\left\|f_i\right\|_{L^{p_i,1}(w_i)}

for every vector of measurable functions f⃗=(f1,…,fm)\vec f=(f_1,\dots,f_m). This conjecture proposes the complete multilinear analogue of Sawyer-type inequalities for the maximal operator under AP⃗RA_{\vec P}^{\mathcal R} weight conditions; its resolution is not specified in the supplied text.

References

Primary source

Carlos Pérez and Eduard Roure Perdices, “Sawyer-type inequalities for Lorentz spaces”, arXiv:2003.04167 (2021).

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