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Transactions of the American Mathematical Society

Published by the American Mathematical Society since 1900, Transactions of the American Mathematical Society is devoted to longer research articles in all areas of pure and applied mathematics.

ISSN 1088-6850 (online) ISSN 0002-9947 (print)

The 2020 MCQ for Transactions of the American Mathematical Society is 1.48.

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Two weight estimates with matrix measures for well localized operators
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by Kelly Bickel, Amalia Culiuc, Sergei Treil and Brett D. Wick PDF
Trans. Amer. Math. Soc. 371 (2019), 6213-6240 Request permission

Abstract:

In this paper, we give necessary and sufficient conditions for weighted $L^2$ estimates with matrix-valued measures of well localized operators. Namely, we seek estimates of the form \[ \| T(\mathbf {W} f)\|_{L^2(\mathbf {V})} \le C\|f\|_{L^2(\mathbf {W})}, \] where $T$ is formally an integral operator with additional structure, $\mathbf {W}, \mathbf {V}$ are matrix measures, and the underlying measure space possesses a filtration. The characterization we obtain is of Sawyer type; in particular, we show that certain natural testing conditions obtained by studying the operator and its adjoint on indicator functions suffice to determine boundedness. Working in both the matrix-weighted setting and the setting of measure spaces with arbitrary filtrations requires novel modifications of a T1 proof strategy; a particular benefit of this level of generality is that we obtain polynomial estimates on the complexity of certain Haar shift operators.
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Additional Information
  • Kelly Bickel
  • Affiliation: Department of Mathematics, Bucknell University, 701 Moore Avenue, Lewisburg, Pennsylvania 17837
  • MR Author ID: 997443
  • Email: kelly.bickel@bucknell.edu
  • Amalia Culiuc
  • Affiliation: School of Mathematics, Georgia Institute of Technology, 686 Cherry Street, Atlanta, Georgia 30332-0160
  • Email: amalia@math.gatech.edu
  • Sergei Treil
  • Affiliation: Department of Mathematics, Brown University, Providence, Rhode Island 02912
  • MR Author ID: 232797
  • Email: treil@math.brown.edu
  • Brett D. Wick
  • Affiliation: Department of Mathematics, Washington University in St. Louis, One Brookings Drive, St. Louis, Missouri 63130-4899
  • MR Author ID: 766171
  • ORCID: 0000-0003-1890-0608
  • Email: wick@math.wustl.edu
  • Received by editor(s): January 6, 2017
  • Received by editor(s) in revised form: August 24, 2017
  • Published electronically: February 1, 2019
  • Additional Notes: The first author’s research is supported in part by National Science Foundation DMS grant #1448846.
    The third author’s research is supported in part by National Science Foundation DMS grants #1301579, #1600139.
    The fourth author’s research is supported in part by National Science Foundation DMS grant #1500509.
  • © Copyright 2019 American Mathematical Society
  • Journal: Trans. Amer. Math. Soc. 371 (2019), 6213-6240
  • MSC (2010): Primary 42B20; Secondary 60G42, 60G46, 47G10
  • DOI: https://doi.org/10.1090/tran/7400
  • MathSciNet review: 3937322