Boundedness Of Iterated Spherical Average On Alpha-Modulation Spaces
CHINESE ANNALS OF MATHEMATICS SERIES B(2021)
摘要
For the iteration of spherical average (A(1))N and the Laplace operator Delta, we consider the boundedness of the operator Delta(A(1))N on the alpha-modulation spaces M-p,q(s,alpha) . The authors obtain some sufficient and necessary conditions to ensure the boundedness on the alpha-modulation spaces. The main theorems significantly improve some known results.
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关键词
Spherical average, alpha-Modulation spaces, Bessel functions
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