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Weighted Sobolev Spaces and Pseudodifferential Operators with Smooth Symbols

1982
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Transactions of the American Mathematical Society
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Let u* be the Fefferman-Stein sharp function of u, and for 1 < r < oo, let Mru be an appropriate version of the Hardy-Littlewood maximal function of u. If A is a (not necessarily homogeneous) pseudodifferential operator of order 0, then there is a constant c > 0 such that the pointwise estimate (Au)*(x) < cMru(x) holds for all x G R" and all Schwartz functions u. This estimate implies the boundedness of 0-order pseudodifferential operators on weighted Lp spaces whenever the weight function

doi:10.2307/1998595
fatcat:invlf7ugk5eklnqdr4ointk64m