Poincaré disk (English, noun)
expansion: Poincaré disk (plural Poincaré disks)
Senses:
glosses: The hyperbolic plane, viewed as a disk so that Euclidean circles and lines Euclidean-perpendicular to the disk's surface are hyperbolic lines.
Forms:
form: Poincaré disks
tags: plural
form: Poincaré disc
tags: alternative