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higher reciprocity theorems from ratios of Gauss sums

One recent proof of quadratic reciprocity involves computing various rations of the Gauss sum. In Quadratic reciprocity and the sign of the Gauss sum via the finite Weil representation Gurevich, …
john mangual's user avatar
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11 votes
2 answers
1k views

distribution of $\sqrt{-1} \mod p$

While reading up on quadratic reciprocity, I learned that if $p = 4k+1$ then $-1$ has a square root in $\mathbb{Z} / p \mathbb{Z}$. Let $r_p$ be an integer with $0\leq r_p < p$ and $r_p^2 \equiv -1 \ …
john mangual's user avatar
  • 22.8k