Average decay of Fourier transforms and geometry of convex sets.
Luca Brandolini, Marco Rigoli, Giancarlo Travaglini (1998)
Revista Matemática Iberoamericana
Similarity:
Let B be a convex body in R, with piecewise smooth boundary and let ^χ denote the Fourier transform of its characteristic function. In this paper we determine the admissible decays of the spherical L averages of ^χ and we relate our analysis to a problem in the geometry of convex sets. As an application we obtain sharp results on the average number of integer lattice points in large bodies randomly positioned in the plane.