Abstract
For the iteration of spherical average (A1)N and the Laplace operator Δ, we consider the boundedness of the operator Δ(A1)N on the α-modulation spaces \(M_{p,q}^{s,\alpha }\). The authors obtain some sufficient and necessary conditions to ensure the boundedness on the α-modulation spaces. The main theorems significantly improve some known results.
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This work was supported by the Science Foundation of Zhejiang Education Department (No. Y201738640) and the National Natural Science Foundation of China (Nos. 11801518, 11671362).
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Huang, Q., Wu, X. Boundedness of Iterated Spherical Average on α-Modulation Spaces. Chin. Ann. Math. Ser. B 42, 721–736 (2021). https://doi.org/10.1007/s11401-021-0287-0
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DOI: https://doi.org/10.1007/s11401-021-0287-0