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On some formulas obtained on combining quadratic residues and non residues of prime numbers. - MaRDI portal

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On some formulas obtained on combining quadratic residues and non residues of prime numbers. (Q1564469)

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scientific article; zbMATH DE number 2721126
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English
On some formulas obtained on combining quadratic residues and non residues of prime numbers.
scientific article; zbMATH DE number 2721126

    Statements

    On some formulas obtained on combining quadratic residues and non residues of prime numbers. (English)
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    1869
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    Aus den einfachsten Sätzen über quadratische Reste und Nichtreste werden mancherlei Formeln hergeleitet, wie z. B. dass für 13, wo die Reste 1, 3, 4, 9, 10, 12, die Nichtreste 2, 5, 6, 7, 8, 11 sind, die Gleichungen statthaben \(2^{2}+3^{2}=13\); \(8^{2}+12^{2}=1^{2}+3^{2}+4^{2}+5^{2}+6^{2}+11^{2}\). Allgemeine Formeln in dieser Beziehung werden nicht gegeben. Dann folgt eine Reihe von Formeln, die sich auf die Summirung der grössten ganzen Zahlen irrationaler Ausdrücke beziehen, z. B. \(\sum^{\mu=\frac{p-5}{4}}_{\mu=1} E\sqrt{\mu p}= \frac{(p-1)(p-5)}{12}; \sum^{p-1}_{\frac {p-1} {4}} E\sqrt{\mu p}=\frac{(p-1)(7p+1)}{12}; \sum^{p-1}_{1} E\sqrt{\mu p}=\frac{(p-1)(2p-1)}{9}.\)
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    Quadratic residue
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    Sum formulas
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