On equal sums of like powers
K.S. Rao (1935)
Mathematische Zeitschrift
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K.S. Rao (1935)
Mathematische Zeitschrift
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K.S. Rao (1936)
Mathematische Zeitschrift
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L. Carlitz (1980)
Acta Arithmetica
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F.M. Ragab, T.M. MacRobert (1962)
Mathematische Zeitschrift
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Yumiko Nagasaka, Kaori Ota, Chizuru Sekine (2003)
Acta Arithmetica
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Emmanuel Tsukerman (2015)
Acta Arithmetica
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Using a generalization due to Lerch [Bull. Int. Acad. François Joseph 3 (1896)] of a classical lemma of Zolotarev, employed in Zolotarev's proof of the law of quadratic reciprocity, we determine necessary and sufficient conditions for the difference of two Dedekind sums to be in 8ℤ. These yield new necessary conditions for equality of two Dedekind sums. In addition, we resolve a conjecture of Girstmair [arXiv:1501.00655].
G. Myerson (1985)
Mathematische Zeitschrift
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Wenpeng Zhang (2003)
Acta Arithmetica
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Abdelmejid Bayad, Abdelaziz Raouj (2010)
Acta Arithmetica
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Zhi-Wei Sun (2001)
Acta Arithmetica
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Tingting Wang (2012)
Acta Arithmetica
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Zhefeng Xu, Wenpeng Zhang (2008)
Acta Arithmetica
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Vsevolod F. Lev (2008)
Acta Arithmetica
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Sun, Zhiwei (2003)
Electronic Research Announcements of the American Mathematical Society [electronic only]
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Roelof W. Bruggemen (1989)
Mathematische Zeitschrift
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