A Littlewood-Paley inequality for arbitrary intervals.
José L. Rubio de Francia (1985)
Revista Matemática Iberoamericana
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José L. Rubio de Francia (1985)
Revista Matemática Iberoamericana
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Robert Fefferman (1985)
Revista Matemática Iberoamericana
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Konstantin E. Tikhomirov (2011)
Banach Center Publications
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We consider a problem of intervals raised by I. Ya. Novikov in [Israel Math. Conf. Proc. 5 (1992), 290], which refines the well-known theorem of J. Marcinkiewicz concerning structure of closed sets [A. Zygmund, Trigonometric Series, Vol. I, Ch. IV, Theorem 2.1]. A positive solution to the problem for some specific cases is obtained. As a result, we strengthen the theorem of Marcinkiewicz for generalized Cantor sets.
L. Gordon (1967)
Studia Mathematica
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Jean-Lin Journé (1985)
Revista Matemática Iberoamericana
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Xue, Qingying, Yabuta, Kôzô (2007)
Journal of Inequalities and Applications [electronic only]
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Elias Stein, Stephen Wainger (1970)
Studia Mathematica
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Loukas Grafakos, Rodolfo H. Torres (2002)
Publicacions Matemàtiques
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A variety of results regarding multilinear singular Calderón-Zygmund integral operators is systematically presented. Several tools and techniques for the study of such operators are discussed. These include new multilinear endpoint weak type estimates, multilinear interpolation, appropriate discrete decompositions, a multilinear version of Schur's test, and a multilinear version of the T1 Theorem suitable for the study of multilinear pseudodifferential and translation invariant operators....
Ronald R. Coifman, Loukas Grafakos (1992)
Revista Matemática Iberoamericana
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In this article we study bilinear operators given by inner products of finite vectors of Calderón-Zygmund operators. We find that necessary and sufficient condition for these operators to map products of Hardy spaces into Hardy spaces is to have a certain number of moments vanishing and under this assumption we prove a Hölder-type inequality in the H space context.
Lennart Carleson, Per Sjölin (1972)
Studia Mathematica
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Christoph M. Thiele (2002)
Publicacions Matemàtiques
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We survey the theory of multilinear singular integral operators with modulation symmetry. The basic example for this theory is the bilinear Hilbert transform and its multilinear variants. We outline a proof of boundedness of Carleson's operator which shows the close connection of this operator to multilinear singular integrals. We discuss particular multilinear singular integrals which historically arose in the study of eigenfunctions of Schrödinger operators. ...