Group Law for Elliptic Curves according to Tom Hales
Following The Group Law for Edwards Curves Thomas C. Hales
edwards
To build and install manually, do:
git clone https://github.com/thery/EdwardsEllipticCurve.git
cd EdwardsEllipticCurve
make # or make -j <number-of-cores-on-your-machine>
make install