On the representation of numbers in the form \(ax^2+by^2+cz^2+dt^2\).
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Publication:5907739
DOI10.1007/BF02564120zbMath53.0155.01MaRDI QIDQ5907739
Publication date: 1927
Published in: Acta Mathematica (Search for Journal in Brave)
Sums of squares and representations by other particular quadratic forms (11E25) Waring's problem and variants (11P05) Applications of the Hardy-Littlewood method (11P55)
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