A note on the representability of binary quadratic forms with Gaussian integer coefficients as sums of squares of two linear forms
John Hardy (1968)
Acta Arithmetica
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John Hardy (1968)
Acta Arithmetica
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Hardy, John (1970)
Portugaliae mathematica
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A. Schinzel (2013)
Bulletin of the Polish Academy of Sciences. Mathematics
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A. Schinzel (2013)
Bulletin of the Polish Academy of Sciences. Mathematics
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The paper completes an incomplete proof given by L. J. Mordell in 1930 of the following theorem: every positive definite classical binary quadratic form is the sum of five squares of linear forms with integral coefficients.
Wacław Sierpiński
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John Hardy (1968)
Acta Arithmetica
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J. Hsia (1973)
Acta Arithmetica
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G. Watson (1974)
Acta Arithmetica
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Adhikari, Sukumar Das, David, Chantal, Jiménez Urroz, Jorge (2008)
Integers
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G. Watson (1975)
Acta Arithmetica
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