Cayley transform (hyperbolic geometry)
= Cayley transform
{disambiguate=hyperbolic geometry}
{c}
{wiki}
The map $z\mapsto i(1+z)/(1-z)$ is an isometry from the Poincare disc to the upper half-plane.
= Cayley transform
{disambiguate=hyperbolic geometry}
{c}
{wiki}
The map $z\mapsto i(1+z)/(1-z)$ is an isometry from the Poincare disc to the upper half-plane.