Chow Coordinates: Mathematics, Algebraic Geometry, Plücker Coordinates, Varieties

Isothermal Coordinates: Mathematics, Differential Geometry, Riemannian Manifold

Quadray Coordinates: Simplex, Tetrahedron, Barycentric Coordinates (mathematics)

Inversive Ring Geometry: Mathematics, Projective Line, Homogeneous Coordinates

Schottky Problem: Mathematics, Friedrich Schottky, Algebraic Geometry, Jacobian Varieties, Abelian Varieties