Abstract
We give a new proof of a theorem of L. Carleson and P. Sjölin onL p-boundedness of spherical summation operators in two variables.
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References
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Fefferman, C. A note on spherical summation multipliers. Israel J. Math. 15, 44–52 (1973). https://doi.org/10.1007/BF02771772
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DOI: https://doi.org/10.1007/BF02771772