A **Kleinian group** is a type of discontinuous group of isometries of hyperbolic 3-space (denoted as \(\mathbb{H}^3\)).
Articles by others on the same topic
A discrete subgroup of , acting by Möbius transformations on the Riemann sphere or orientation-preserving isometries of hyperbolic space . A group may be Kleinian even when some elements fix points; freeness and absence of torsion are additional conditions.