Closing the Littlewood-Paley inequality from below by duality, using almost orthogonality of the dyadic blocks, then $L^2$ atoms and the atomic space $X$ on which a Calderon-Zygmund operator maps into $L^1$.
Harmonic Analysis ·
September 2026
I use analytics to see which pages get read and how the site is used,
including recordings of how pages are navigated. Nothing is loaded or
stored until you agree. More.