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On two weight estimates for dyadic operators (1602.02084v1)

Published 5 Feb 2016 in math.FA

Abstract: We provide a quantitative two weight estimate for the dyadic paraproduct $\pi_b$ under certain conditions on a pair of weights $(u;v)$ and $b$ in $Carl_{u,v}$, a new class of functions that we show coincides with BMO when $u = v \in Ad_2$. We obtain quantitative two weight estimates for the dyadic square function and the martingale transforms under the assumption that the maximal function is bounded from $L_2(u)$ into $L_2(v)$ and $v \in RHd_1$. Finally we obtain a quantitative two weight estimate from $L_2(u)$ into $L_2(v)$ for the dyadic square function under the assumption that the pair $(u; v)$ is in joint $Ad_2$ and $u{-1} \in RHd_1$, this is sharp in the sense that when $u = v$ the conditions reduce to $u \in Ad_2$ and the estimate is the known linear mixed estimate.

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