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Main Authors: Edwin, Roni A., Lin, Allen
Format: Preprint
Published: 2024
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Online Access:https://arxiv.org/abs/2412.05485
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author Edwin, Roni A.
Lin, Allen
author_facet Edwin, Roni A.
Lin, Allen
contents The Gauss circle problem asks for an approximation to the number of lattice points of $\mathbb{Z}^2$ contained in $B_r$, the disk of radius $r$ centered at the origin. Upper, lower, and average bounds have been established for this number-theoretic problem and have been generalized to any lattice in any dimension. We extend this problem to a more general class of structures known as Fourier quasicrystals. Recent work from Alon, Kummer, Kurasov, and Vinzant provides an upper bound $\#(Λ\cap B_r) = c_0\textrm{Vol}_d\left(B_r\right)+ O\left(r^{d-1}\right)$ for any Fourier quasicrystal $Λ\subset \mathbb{R}^d$ of density $c_0$, where $B_r$ is the $d$-dimensional ball of radius $r$. In this paper, we improve the upper bound for any uniformly discrete Fourier quasicrystal, by showing we can write $\#\left(Λ\cap B_r\right) = c_0\textrm{Vol}_d\left(B_r\right) + O\left(r^{θ(Λ)}\right)$, where $\frac{d-1}{2} < θ(Λ) < d-1$ is some exponent depending on $Λ$. In the special case $d = 2$, we also prove lower and upper bounds for the average of the error.
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publishDate 2024
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spellingShingle The Gauss Circle Problem and Fourier Quasicrystals
Edwin, Roni A.
Lin, Allen
Mathematical Physics
The Gauss circle problem asks for an approximation to the number of lattice points of $\mathbb{Z}^2$ contained in $B_r$, the disk of radius $r$ centered at the origin. Upper, lower, and average bounds have been established for this number-theoretic problem and have been generalized to any lattice in any dimension. We extend this problem to a more general class of structures known as Fourier quasicrystals. Recent work from Alon, Kummer, Kurasov, and Vinzant provides an upper bound $\#(Λ\cap B_r) = c_0\textrm{Vol}_d\left(B_r\right)+ O\left(r^{d-1}\right)$ for any Fourier quasicrystal $Λ\subset \mathbb{R}^d$ of density $c_0$, where $B_r$ is the $d$-dimensional ball of radius $r$. In this paper, we improve the upper bound for any uniformly discrete Fourier quasicrystal, by showing we can write $\#\left(Λ\cap B_r\right) = c_0\textrm{Vol}_d\left(B_r\right) + O\left(r^{θ(Λ)}\right)$, where $\frac{d-1}{2} < θ(Λ) < d-1$ is some exponent depending on $Λ$. In the special case $d = 2$, we also prove lower and upper bounds for the average of the error.
title The Gauss Circle Problem and Fourier Quasicrystals
topic Mathematical Physics
url https://arxiv.org/abs/2412.05485