Unified weighted-condition conjecture for the multilinear maximal operator

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Let mm be a positive integer, let w⃗=(w1,…,wm)∈A1⃗\vec{w}=(w_1,\ldots,w_m)\in A_{\vec{1}}, let vv be a weight with v1/m∈A∞v^{1/m}\in A_{\infty}, and define

ν=w11/m⋯wm1/m.\nu=w_1^{1/m}\cdots w_m^{1/m}.

Unified weighted-condition conjecture. There is a constant CC such that

∥M(f⃗ )(x)v∥L1/m,∞(νv1/m)≤C∏i=1m∥fi∥L1(wi).\left\|\frac{\mathcal{M}(\vec f\,)(x)}{v}\right\|_{L^{1/m,\infty}(\nu v^{1/m})}\leq C\prod_{i=1}^m\|f_i\|_{L^1(w_i)}.

This would unify the two sufficient conditions already obtained: w⃗∈A1⃗\vec w\in A_{\vec 1} with νv1/m∈A∞\nu v^{1/m}\in A_\infty, and wi∈A1w_i\in A_1 for every ii with v∈A∞v\in A_\infty. The supplied status evidence says that this fact was proved in Remark 7.5 of the cited work, so the conjecture is solved.

References

Primary source

Kangwei Li, Sheldy J. Ombrosi and Belén Picardi, “Weighted mixed weak-type inequalities for multilinear operators”, arXiv:1705.09206 (2017).

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