# toShortWForm -- A method to transform an elliptic curve from Weierstrass form to short Weierstrass form.

## Synopsis

• Usage:
toShortWForm(E)
• Inputs:
• E

## Description

 i1 : E=ellCurve({1,2,3,4,6},GF(29)) o1 = Elliptic Curve defined by Y^2 + 1 XY + 3 Y = X^3 + 2 X^2 + 4 X + 6( over(GF 29 .)) o1 : EllipticCurveW i2 : toShortWForm(E) o2 = Elliptic Curve defined by Y^2 = X^3 + 11 X + (-4)( over(GF 29 .)) o2 : EllipticCurve

## Ways to use toShortWForm :

• "toShortWForm(EllipticCurveW)"

## For the programmer

The object toShortWForm is .