: Mathématiques: Poincaré disk

geometry > non-Euclidean geometry > hyperbolic geometry > Poincaré disk

Poincaré disk

In geometry, the Poincaré disk model, also called the conformal disk model, is a model of 2-dimensional hyperbolic geometry in which all points are inside the unit disk, and straight lines are either circular arcs contained within the disk that are orthogonal to the unit circle or diameters of the unit circle.
(Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Poincar%C3%A9_disk_model)

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