On the rational points on the sphere (Q907036)

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scientific article; zbMATH DE number 6537861
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On the rational points on the sphere
scientific article; zbMATH DE number 6537861

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    On the rational points on the sphere (English)
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    1 February 2016
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    This is a very nice paper which gives a short proof for a Diophantine approximation result on the spheres in the case \(n=2\). The general theorem is due to \textit{D. Kleinbock} and \textit{K. Merrill} [Isr. J. Math. 209, Part 1, 293--322 (2015; Zbl 1332.11070)] (with a more involved proof). The present proof is elementary, using continued fractions and classical Diophantine approximation.
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    intrinsic Diophantine approximation
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    rational points on sphere
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    Minkowski convex body theorem
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    sum of two squares
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