The cardinality of the value sets modulo \(n\) of \(x^2 + x^{-2}\) and \(x^2 + y^2\)
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Publication:992548
DOI10.2140/involve.2010.3.171zbMath1218.11004OpenAlexW2183984263MaRDI QIDQ992548
Publication date: 9 September 2010
Published in: Involve (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.2140/involve.2010.3.171
Congruences; primitive roots; residue systems (11A07) Arithmetic functions; related numbers; inversion formulas (11A25)
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