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arXiv:math/0703732 [math.CA]AbstractReferencesReviewsResources

Weighted norm inequalities for fractional operators]

Pascal Auscher, José Maria Martell

Published 2007-03-25, updated 2008-02-05Version 2

We prove weighted norm inequalities for fractional powers of elliptic operators together with their commutators with BMO functions, encompassing what is known for the classical Riesz potentials and elliptic operators with Gaussian domination by the classical heat operator. The method relies upon a good-$\lambda$ method that does not use any size or smoothness estimates for the kernels.

Comments: accepted in Indiana University Mathematicla Journal. A thorough reorganisation has been done on suggestions from the referee
Categories: math.CA
Subjects: 42B25, 35J15
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