Abstract
We prove mapping properties of pseudodifferential operators with rough symbols on Hardy spaces for Fourier integral operators. The symbols a(x,η) are elements of C r* S m1,δ classes that have limited regularity in the x variable. We show that the associated pseudodifferential operator a(x, D) maps between Sobolev spaces ℌ s,pFIO (ℝn) and ℌ t,pFIO (ℝn) over the Hardy space for Fourier integral operator ℌ pFIO (ℝn). Our main result implies that for m = 0, δ =l/2 and r > n − 1, a(x, D) acts boundedly on ℌ pFIO (ℝn) for all p ∈ (1, ∞).
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Acknowledgements
The author would like to thank Andrew Hassell for many useful conversations about the article, and both Andrew Hassell and Pierre Portal for valuable advice. The author is also grateful to Dorothee Frey for a conversation regarding the use of the anisotropic multiplier theorem in Lemma 2.4, and to the anonymous referee for various helpful comments.
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This research was supported by ARC grant DP160100941, and partially supported by NCN grant UMO2017/27/B/ST1/00078. The research leading to these results has received funding from the Norwegian Financial Mechanism 2014–2021, grant 2020/37/K/ST1/02765.
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Rozendaal, J. Rough pseudodifferential operators on Hardy spaces for Fourier integral operators. JAMA 149, 135–165 (2023). https://doi.org/10.1007/s11854-022-0247-y
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DOI: https://doi.org/10.1007/s11854-022-0247-y