Abstract
Consider the modular circle
and the modular hyperbola
We provide explicit formulas for the cardinality of the sets
Citation
Sara Hanrahan. Mizan Khan. "The cardinality of the value sets modulo $n$ of $x^2+x^{-2}$ and $x^2+y^2$." Involve 3 (2) 171 - 182, 2010. https://doi.org/10.2140/involve.2010.3.171
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