# Law of Quadratic Reciprocity/Historical Note

Adrien-Marie Legendre first stated it correctly, but his attempted $\text {1785}$ proof of it was incorrect.
Carl Friedrich Gauss first became aware of this result, and found a correct proof. He wrote this up in $\text {1798}$ and published it in his Disquisitiones Arithmeticae in $\text {1801}$.
The proof as given here was found by Ferdinand Eisenstein and published in $\text {1844}$.