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Dear all, does there exist a characterization of the space of harmonic functions ? (To be clear, let us consider the Banach space of harmonic functions on the
Dear all, As you know, the linear bounded operators mapping L^p(R^N) to L^q(R^N) (that commute with translations) are given by a convolution of a tempered
... I have an elementary proof of a similar result at the end of the paper: http://www.math.missouri.edu/~stephen/preprints/thin.html You may be able to adopt
This reply assumes that you left out a square root: (1+|m|^2)^{(n/2-1)/2}. This operator may be expressed as convolution with a kernel k(x) which has a