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Geometry and Topology Seminar

Friday, February 3, 2023
4:00pm to 5:00pm
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Linde Hall 187
Fibrations, depth 1 foliations, and branched surfaces
Chi Cheuk Tsang, Department of Mathematics, UC Berkeley,

A depth 1 foliation on a 3-manifold is a foliation having finitely many compact leaves and with all other leaves spiraling into the compact leaves. These are a natural extension of fibrations of 3-manifolds over $S^1$, and as shown in work of Cantwell, Conlon, and Fenley, a lot of that theory carries over. In this talk, we will first recall how the recent theory of veering branched surfaces offers a neat package of much that is known about fibrations, and explain how these can be generalized to apply to depth 1 foliations, providing a new way of studying finite depth foliations and their associated big mapping classes. This is joint work with Michael Landry.

For more information, please contact Math Department by phone at 626-395-4335 or by email at [email protected] or visit