### Hyperbolic Geometry

Hyperbolic space is isotropic, with constant curvature $-1$. Geodesics diverege exponentially, and the surface area of geodesic spheres is exponential in their radius.

Hyperbolic space is isotropic, with constant curvature $-1$. Geodesics diverege exponentially, and the surface area of geodesic spheres is exponential in their radius.