How to find the normal form of an elliptic curve using Sage?

asked 6 years ago

anonymous user

Anonymous

Let C be the following curve in C2. 11664c13c22+536544c13c2+6170256c13+67068c12c22+1542564c12c2 +3085128c1c2232393844c1c2+3085128c1+17739486c22+6941538c2=0. I checked that this curve has genus 1 using Sage. Therefore it is an elliptic curve. How to change coordinates such that the equation of this curve is of the form y2=f(x), where f is some polynomial. Thank you very much.

I tried to use the following codes in Sage.

R.<c1,c2> = QQ[]; Jacobian(11664c1^3c2^2 + 536544c1^3c2 + 6170256c1^3 + 67068c1^2c2^2 + 1542564c1^2c2 + 3085128c1c2^2 - 32393844c1c2 + 3085128c1 + 17739486c2^2 + 6941538c2)

But there is an error: NoEmbeddingError: not a sub-polytope of a reflexive polygon. How to find the normal form of the curve using Sage? Thank you very much.

Preview: (hide)

Comments

The code posted should be indented in order to prevent * from being interpreted a markdown formatting. But if I fix the multiplications then I get the same exception. I have no idea what it means in this case though.

Iguananaut gravatar imageIguananaut ( 6 years ago )