Characterization of in terms of generalized Littlewood-Paley g-functions
Akihito Uchiyama (1985)
Studia Mathematica
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Akihito Uchiyama (1985)
Studia Mathematica
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Jonathan Cohen, John Gosselin (1982)
Studia Mathematica
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David Adams, Michael Frazier (1988)
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.
M. Mateljević, M. Pavlović (1984)
Studia Mathematica
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Michał Wojciechowski (2000)
Studia Mathematica
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An integral criterion for being an Fourier multiplier is proved. It is applied in particular to suitable regular functions which depend on the product of variables.
G. Sampson (1993)
Studia Mathematica
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We consider operators of the form with Ω(y,u) = K(y,u)h(y-u), where K is a Calderón-Zygmund kernel and (see (0.1) and (0.2)). We give necessary and sufficient conditions for such operators to map the Besov space (= B) into itself. In particular, all operators with , a > 0, a ≠ 1, map B into itself.
G. Sampson, A. Naparstek, V. Drobot (1976)
Studia Mathematica
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Robert Latter (1978)
Studia Mathematica
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Roberto Macías, Carlos Segovia (1979)
Studia Mathematica
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