Kleinian groups, which are discrete isometry groups of hyperbolic 3-space, were first studied by Poincaré and a fundamental finiteness theorem was proved by Ahlfors . Thurston's work on Kleinian groups yielded many new results and established a well known conjecture.
Kleinian grupo, na kung saan ay discrete isometry grupo ng mga hayperboliko 3-space, ay unang-aral sa pamamagitan ng Poincaré at isang pangunahing mga hangganan teorama ay proved by Ahlfors. Thurston ng trabaho sa Kleinian grupo yielded maraming bagong mga resulta at itinatag ng isang mahusay na kilala haka-haka.