Upper endpoint estimates and extrapolation for commutators.

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Li, Kangwei
Ombrosi, Sheldy J.
Rivera Ríos, Israel P.

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Instituto de Matemática de Bahía Blanca (CONICET - UNS)

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In this note we revisit the upper endpoint estimates for commutators following the line by Harboure, Segovia, and Torrea [Illinois J. Math. 41 no. 4 (1997), 676–700]. Relying upon the suitable BMO subspace suited for the commutator that was introduced in Accomazzo’s PhD thesis (2020), we obtain a counterpart for commutators of the upper endpoint extrapolation result by Harboure, Mac´ıas and Segovia [Amer. J. Math. 110 no. 3 (1988), 383–397]. Multilinear counterparts are provided as well.

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Política de acceso abierto: https://inmabb.criba.edu.ar/revuma/

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Rev. Un. Mat. Argentina 66, (2023), no. 1, 213–228

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Except where otherwised noted, this item's license is described as Attribution 4.0 Internacional