Maximal functions related to subelliptic operators invariant under an action of a nilpotent Lie group
Ewa Damek (1992)
Studia Mathematica
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Ewa Damek (1992)
Studia Mathematica
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Andrzej Hulanicki, Joe Jenkins (1987)
Studia Mathematica
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S. Lachterman (1966)
Studia Mathematica
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O. Blasco (1987)
Studia Mathematica
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O. A. Oleinik, G. A. Yosifian (1977)
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
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Isreal Zirman (1978)
Studia Mathematica
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Loukas Grafakos (1992)
Revista Matemática Iberoamericana
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We continue the study of multilinear operators given by products of finite vectors of Calderón-Zygmund operators. We determine the set of all r ≤ 1 for which these operators map products of Lebesgue spaces L(R) into the Hardy spaces H(R). At the endpoint case r = n/(n + m + 1), where m is the highest vanishing moment of the multilinear operator, we prove a weak type result.
Ronald Coifman, Guido Weiss (1972)
Studia Mathematica
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Anna Canale, Patrizia Di Gironimo, Antonio Vitolo (1998)
Studia Mathematica
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We introduce a sort of "local" Morrey spaces and show an existence and uniqueness theorem for the Dirichlet problem in unbounded domains for linear second order elliptic partial differential equations with principal coefficients "close" to functions having derivatives in such spaces.
Wong, C.F., Narain Kesarwani, R. (1975)
Portugaliae mathematica
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