Mathematics Colloquia and Seminars

Return to Colloquia & Seminar listing

Shrinkwrapping, and the tameness of hyperbolic 3-manifolds


Speaker: Danny Calegari, CalTech
Location: 693 Kerr
Start time: Wed, Jan 19 2005, 4:10PM

(This is joint work with Dave Gabai). We introduce a new technique called *shrinkwrapping* for finding CAT(-1) surfaces in hyperbolic manifolds. Using this, we show that a complete hyperbolic 3-manifold with finitely generated fundamental group is geometrically and topologically tame.