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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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Maximal function characterizations for new local Hardy-type spaces on spaces of homogeneous type
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by The Anh Bui, Xuan Thinh Duong and Fu Ken Ly PDF
Trans. Amer. Math. Soc. 370 (2018), 7229-7292 Request permission

Abstract:

Let $X$ be a space of homogeneous type and let $\mathfrak {L}$ be a nonnegative self-adjoint operator on $L^2(X)$ enjoying Gaussian estimates. The main aim of this paper is twofold. Firstly, we prove (local) nontangential and radial maximal function characterizations for the local Hardy spaces associated to $\mathfrak {L}$. This gives the maximal function characterization for local Hardy spaces in the sense of Coifman and Weiss provided that $\mathfrak {L}$ satisfies certain extra conditions. Secondly we introduce local Hardy spaces associated with a critical function $\rho$ which are motivated by the theory of Hardy spaces related to Schrödinger operators and of which include the local Hardy spaces of Coifman and Weiss as a special case. We then prove that these local Hardy spaces can be characterized by (local) nontangential and radial maximal functions related to $\mathfrak {L}$ and $\rho$, and by global maximal functions associated to ‘perturbations’ of $\mathfrak {L}$. We apply our theory to obtain a number of new results on maximal characterizations for the local Hardy type spaces in various settings ranging from Schrödinger operators on manifolds to Schrödinger operators on connected and simply connected nilpotent Lie groups.
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Additional Information
  • The Anh Bui
  • Affiliation: Department of Mathematics, Macquarie University, NSW 2109, Australia
  • MR Author ID: 799948
  • Email: the.bui@mq.edu.au, bt_anh80@yahoo.com
  • Xuan Thinh Duong
  • Affiliation: Department of Mathematics, Macquarie University, NSW 2109, Australia
  • MR Author ID: 271083
  • Email: xuan.duong@mq.edu.au
  • Fu Ken Ly
  • Affiliation: The School of Mathematics and Statistics, Faculty of Science and the Mathematics Learning Center, Education Portfolio, University of Sydney, NSW 2006, Australia
  • MR Author ID: 1038101
  • Email: ken.ly@sydney.edu.au
  • Received by editor(s): November 3, 2016
  • Received by editor(s) in revised form: March 17, 2017
  • Published electronically: July 5, 2018
  • Additional Notes: The first and second authors were supported by the research grant ARC DP140100649 from the Australian Research Council.
  • © Copyright 2018 American Mathematical Society
  • Journal: Trans. Amer. Math. Soc. 370 (2018), 7229-7292
  • MSC (2010): Primary 42B30, 42B35, 47B38
  • DOI: https://doi.org/10.1090/tran/7289
  • MathSciNet review: 3841848