Displaying similar documents to “On the behaviour of sine series near the origin.”

Average decay of Fourier transforms and geometry of convex sets.

Luca Brandolini, Marco Rigoli, Giancarlo Travaglini (1998)

Revista Matemática Iberoamericana

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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.

A remark on polyconvex envelopes of radially symmetric functions in dimension 2 × 2

Ondřej Došlý (1997)

Applications of Mathematics

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We study polyconvex envelopes of a class of functions related to the function of Kohn and Strang introduced in . We present an example of a function of this class for which the polyconvex envelope may be computed explicitly and we also point out some general features of the problem.

Carleman estimates for a subelliptic operator and unique continuation

Nicola Garofalo, Zhongwei Shen (1994)

Annales de l'institut Fourier

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We establish a Carleman type inequality for the subelliptic operator = Δ z + | x | 2 t 2 in n + 1 , n 2 , where z n , t . As a consequence, we show that - + V has the strong unique continuation property at points of the degeneracy manifold { ( 0 , t ) n + 1 | t } if the potential V is locally in certain L p spaces.

The length of a lemmiscate.

Elia, M., Angeli, M.T.Galizia (1984)

Publications de l'Institut Mathématique. Nouvelle Série

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