Is this an elliptic curve $x^2+y^2=k^2(1+x^2 y^2)$ over rationals? If yes, how can we transform it into usual form? My friend sent me this curve.
2026-03-25 09:27:33.1774430853
Is this an elliptic curve $x^2+y^2=k^2(1+x^2y^2)$
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