Warren D Smith's profile - activity

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2012-03-03 11:29:02 +0200	asked a question	elliptic curves in quartic and standard form `y^2 = ax^4+bx^3+cx^2+dx+e` is birationally equivalent to an elliptic curve in standard Weierstrass form `y^2=cubic(x)`. How to I get sage to exhibit/find the birational transformation that accomplishes that? [I am specifically interested in knowing all about this class of curves: `8Dy^2 = (x-2)(x-1)(x+1)*(x+2)` for integer D. I am pretty new to both SAGE and elliptic curves.]