Geometry and Topology Seminar —— Geometric Infiniteness in Gromov Hyperbolic Spaces
报告人：杨朝栋（伊人直播
）
时间：2026-03-25 15:10-17:00
地点：智华楼四元厅（225）
【摘要】
We provide two new characterizations of geometrically infinite actions on Gromov hyperbolic spaces: one in terms of the existence of escaping geodesics, and the other via the presence of uncountably many non-conical limit points. These results extend corresponding theorems of Bonahon, Bishop,and Kapovich–Liu from the settings of Kleinian groups and pinched negatively curved manifolds to discrete groups acting properly on proper Gromov hyperbolic spaces. This is a joint work with Wenyuan Yang.
