- EllPoint

Synopsis

• Operator: -

• Usage:

  -P

• Inputs:
  • P, an instance of the type EllPoint
• Outputs:
  • an instance of the type EllPoint

Description

Computes the inverse of a point.

i1 : E=ellCurve(3,8,GF(13))

o1 = Elliptic Curve defined by Y^2 = X^3 + 3 X + (-5)( over(GF 13 .))

o1 : EllipticCurve

i2 : P=ellPoint({1,5,1},E)

o2 = Point ({1, 5, 1}( on the (Elliptic Curve defined by Y^2 = X^3 + 3 X + (-5)( over(GF 13 .)))))

o2 : EllPoint

i3 : -P

o3 = Point ({1, -5, 1}( on the (Elliptic Curve defined by Y^2 = X^3 + 3 X + (-5)( over(GF 13 .)))))

o3 : EllPoint