Commutators of singular integrals revisited
classification
🧮 math.CA
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commutatorsintegralssingularbloom-typeboundednesscharacterizationclassestablished
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We obtain a Bloom-type characterization of the two-weighted boundedness of iterated commutators of singular integrals. The necessity is established for a rather wide class of operators, providing a new result even in the unweighted setting for the first order commutators.
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