1 | initial version |

Apparently, `xP`

and `xQ`

are coordinates of point on an elliptic curve over a finite field $\textrm{GF}(p)$. In this case they represent residues modulo $p$, and operation `%`

is not defined for them. If one wants to treat them as integers, a conversion is needed: `uu = int(xQ) % int(xP)`

2 | No.2 Revision |

Apparently, `xP`

and `xQ`

are coordinates of ~~point ~~some points on an elliptic curve over a finite field $\textrm{GF}(p)$. In this case they represent residues modulo $p$, and operation `%`

is not defined for them. If one wants to treat them as integers, a conversion is needed: `uu = int(xQ) % int(xP)`

3 | No.3 Revision |

Apparently, `xP`

and `xQ`

are coordinates of some points on an elliptic curve over a finite field $\textrm{GF}(p)$. In this case they represent residues modulo $p$, and operation `%`

is not defined for them. If one wants to treat them as integers, ~~a conversion ~~lifting is needed: `uu = `

~~int(xQ) ~~lift(xQ) % ~~int(xP)~~lift(xP)

Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.