Elliptic Curves: Scalar Multiplication

Explanation of the underlying math is in the accompanying article https://trustica.cz/2018/04/12/elliptic-curves-multiplication-by-scalar Although the stereographic projection of the projective plane is mostly useful for explaining the point at infinity, it can actually be used for depicting any operation over real numbers in the projective plane. This video shows the scalar multiplication of chosen point on an elliptic curve in simple Weierstrass form both using euclidean grid and stereographic projection onto a sphere.