96 research outputs found
On the symbol calculus for multidimensional Hausdorff operators
The aim of this work is to derive a symbol calculus on
for multidimensional Hausdorff operators. Two aspects of this activity result
in two almost independent parts. While throughout the perturbation matrices are
supposed to be self-adjoint and form a commuting family, in the second part
they are additionally assumed to be positive definite. What relates these two
parts is the powerful method of diagonalization of a normal Hausdorff operator
elaborated earlier by the second author
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Weighted Fourier inequalities for radial functions
Weighted Lp(Rn) ! Lq(Rn) Fourier inequalities are studied. We prove Pitt-Boas type results on integrability with power weights of the Fourier transform of a radial function
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