Abstract
We obtain endpoint estimates for multilinear singular integral operators whose kernels satisfy regularity conditions significantly weaker than those of the standard Calderón-Zygmund kernels. As a consequence, we deduce endpoint L1 X ⋯ X L1 to weak L1/m estimates for the mth-order commutator of Calderón. Our results reproduce known estimates for m =1, 2 but are new for m ≥ 3. We also explore connections between the 2nd-order higher-dimensional commutator and the bilinear Hilbert transform and deduce some new off-diagonal estimates for the former.
Original language | English |
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Pages (from-to) | 2089-2113 |
Number of pages | 25 |
Journal | Transactions of the American Mathematical Society |
Volume | 362 |
Issue number | 4 |
DOIs | |
Publication status | Published - Apr 2010 |