Weak type (p,p) estimates for Riesz transforms
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- Blunck, S. & Kunstmann, P. Math. Z. (2004) 247: 137. doi:10.1007/s00209-003-0627-7
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We consider the problem of Lp-boundedness of higher order Riesz transforms associated to elliptic operators L of order 2m on As an application of the recently solved Kato conjecture, we show for all This generalizes the result of Auscher and Tchamitchian restricted to the case D≤2m.