Geometry & Topology Seminar: Incompressible surfaces in closed hyperbolic manifolds

Tue Oct 14, 2025 4:30 a.m.—5:30 a.m.
Sprawling aerial view of Central Campus's gothic architecture at sunset

This event has passed.

Kline Tower, KT 203
219 Prospect Street New Haven, CT 06511
  • All Ages

In 2009, Kahn and Markovic proved the Surface Subgroup Theorem, and they constructed a ubiquitous collection of \pi_1-injective immersed surfaces in closed hyperbolic 3-manifolds. Hamenstadt later showed that any cocompact lattice of some simple rank 1 Lie group other than SO(2m,1) (m >= 1) has a surface subgroup. Recently, we constructed \pi_1-injective immersed surfaces in closed hyperbolic 2n-manifolds, which addresses the cases missing from Hamenstadt's work. This is joint work with Jeremy Kahn.

Speaker
Zhenghao Rao

Speaker affiliation
Rutgers University