The metric
for the Poincaré hyperbolic disk, which is a model for hyperbolic geometry. The hyperbolic metric is invariant under conformal maps of the disk onto itself.
The metric
for the Poincaré hyperbolic disk, which is a model for hyperbolic geometry. The hyperbolic metric is invariant under conformal maps of the disk onto itself.
Weisstein, Eric W. "Hyperbolic Metric." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/HyperbolicMetric.html