Abstract
We consider certain Littlewood–Paley operators and prove characterization of some function spaces in terms of those operators. When treating weighted Lebesgue spaces, a generalization to weighted spaces will be made for Hörmander’s theorem on the invertibility of homogeneous Fourier multipliers. Also, applications to the theory of Sobolev spaces will be given.
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The author is partly supported by Grant-in-Aid for Scientific Research (C) No. 25400130, Japan Society for the Promotion of Science.
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Sato , S. Littlewood–Paley Equivalence and Homogeneous Fourier Multipliers. Integr. Equ. Oper. Theory 87, 15–44 (2017). https://doi.org/10.1007/s00020-016-2333-y
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DOI: https://doi.org/10.1007/s00020-016-2333-y