define elliptic curve y^2=x^3-x over finite field 11

[Xavier Nogues]

Hello,

I dont  know how to define elliptic curve y^2=x^3-x over finite field 11. The negative  "-x" is the problem

p=11

E=EllipticCurve(GF(p),[0,0,0,-1,0]);

Elliptic Curve defined by y^2 = x^3 + 10*x over Finite Field of size 11

Thanks

[Vincent Delecroix]

What is the problem!? "10 = -1 mod 11", no?

On 20/06/2017 12:52, Xavier Nogues wrote:
> Hello,
> I dont know how to define elliptic curve y^2=x^3-x over finite field 11.
> The negative "-x" is the problem
>
> p=11
> E=EllipticCurve(GF(p),[0,0,0,-1,0]);
>
>
>

> Elliptic Curve defined by y^2 = x^3 + *10*x* over Finite Field of size 11
>
>
> Thanks
>
>
>

[Xavier Nogues]

Ok, got it... 
Thanks!