Returns an elliptic curve in short Weierstrass form given by the equation: y^2=x^3+Ax+B
i1 : ellCurve(3,8,GF(13)) o1 = Elliptic Curve defined by Y^2 = X^3 + 3 X + (-5)( over(GF 13 .)) o1 : EllipticCurve