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math.CA2010★ 12 cited
Multi-Parameter Div-Curl Lemmas
Michael T. Lacey, Stefanie Petermichl, Jill C. Pipher +1
We study the possible analogous of the Div-Curl Lemma in classical harmonic analysis and partial differential equations, but from the point of view of the multi-parameter setting.…
math.CA2007★ 29 cited
Multiparameter Riesz Commutators
Michael Lacey, Stefanie Petermichl, Jill Pipher +1
It is shown that product BMO of Chang and Fefferman, defined on the product of Euclidean spaces can be characterized by the multiparameter commutators of Riesz transforms. This ext…