Pseudo-localization of singular integrals and noncommutative Calderon-Zygmund theory

Details Pseudo-localization of singular integrals and noncommutative Calderon-Zygmund theory Pseudo-localization of singular integrals and noncommutative Calderon-Zygmund theory

2007-04-23

arxiv.org/abs/0704.2950v1

Mathematics

Classical Analysis and ODEs

72 pages, 6 figures

Scientific paper

In this paper we obtain the weak type (1,1) boundedness of Calderon-Zygmund operators acting over operator-valued functions. Our main tools for its solution are a noncommutative form of Calderon-Zygmund decomposition in conjunction with a pseudo-localization principle for singular integrals, which is new even in the classical setting and of independent interest. Perhaps because of the hidden role of pseudo-localization and almost orthogonality, this problem has remained open for quite some time. We also consider Calderon-Zygmund operators associated to certain operator-valued kernels.

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