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Lattice points in rotated convex domains. (English) Zbl 1359.52022

Let \(B \in \mathbb R^n\) be a compact convex domain with a smooth boundary and containing the origin in the interior. Consider the standard lattice \(\mathbb Z^n\). It is known that the number of lattice points in the dilated domain \(tB\) equals approximately to the volume of the dilated domain, while the reminder is not greater than \(Ct^{n-1}\) asymptotically. In this paper the author proves that for almost every rotation the reminder is of order \(Ct^{n-2+2/(n+1)+\zeta_n}\) with a positive \(\zeta_n\). In the case of the plane (\(n=2\)) this estimate is further extended to general compact convex domains.

MSC:

52C07 Lattices and convex bodies in \(n\) dimensions (aspects of discrete geometry)
52C05 Lattices and convex bodies in \(2\) dimensions (aspects of discrete geometry)
11P21 Lattice points in specified regions
42B10 Fourier and Fourier-Stieltjes transforms and other transforms of Fourier type
11L07 Estimates on exponential sums

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