On the expression of a number in the form \(ax^2+by^2+cz^2+du^2\).
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Publication:1470282
zbMATH Open46.0240.01MaRDI QIDQ1470282
Publication date: 1917
Published in: Proceedings of the Cambridge Philosophical Society (Search for Journal in Brave)
Sums of squares and representations by other particular quadratic forms (11E25) General ternary and quaternary quadratic forms; forms of more than two variables (11E20)
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Tight universal octagonal forms ⋮ Sums of squares of integral multiples of an integral element of real bi-quadratic fields ⋮ Near universal property of a quadratic form of Hessian discriminant 4 ⋮ On \(n\)-universal quadratic forms over dyadic local fields ⋮ Primitively 2-universal senary integral quadratic forms ⋮ Universal quadratic forms and indecomposables in number fields: a survey ⋮ Figurate numbers, forms of mixed type, and their representation numbers
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