Geometry and Topology Seminar 2019-2020
The Geometry and Topology seminar meets in room 901 of Van Vleck Hall on Fridays from 1:20pm - 2:10pm.
For more information, contact Richard Kent.
Fall 2013
| date | speaker | title | host(s) |
|---|---|---|---|
| September 6 | |||
| September 13 | Alex Zupan (Texas) | Totally geodesic subgraphs of the pants graph | Kent |
| September 20 | |||
| September 27 | |||
| October 4 | |||
| October 11 | |||
| October 18 | |||
| October 25 | |||
| November 1 | |||
| November 8 | Neil Hoffman (Melbourne) | Verified computations for hyperbolic 3-manifolds | Kent |
| November 15 | |||
| November 22 | |||
| Thanksgiving Recess | |||
| December 6 | |||
| December 13 | |||
Fall Abstracts
Alex Zupan (Texas)
Totally geodesic subgraphs of the pants graph
Abstract: For a compact surface S, the associated pants graph P(S) consists of vertices corresponding to pants decompositions of S and edges corresponding to elementary moves between pants decompositions. Motivated by the Weil-Petersson geometry of Teichmüller space, Aramayona, Parlier, and Shackleton conjecture that the full subgraph G of P(S) determined by fixing a multicurve is totally geodesic in P(S). We resolve this conjecture in the case that G is a product of Farey graphs. This is joint work with Sam Taylor.
Neil Hoffman (Melbourne)
Verified computations for hyperbolic 3-manifolds
Abstract: Given a triangulated 3-manifold M a natural question is: Does M admit a hyperbolic structure?
While this question can be answered in the negative if M is known to be reducible or toroidal, it is often difficult to establish a certificate of hyperbolicity, and so computer methods have developed for this purpose. In this talk, I will describe a new method to establish such a certificate via verified computation and compare the method to existing techniques.
This is joint work with Kazuhiro Ichihara, Masahide Kashiwagi, Hidetoshi Masai, Shin'ichi Oishi, and Akitoshi Takayasu.
Spring 2014
| date | speaker | title | host(s) |
|---|---|---|---|
| January 24 | |||
| January 31 | |||
| February 7 | |||
| February 14 | |||
| February 21 | |||
| February 28 | |||
| March 7 | |||
| March 14 | |||
| Spring Break | |||
| March 28 | |||
| April 4 | |||
| April 11 | |||
| April 18 | |||
| April 25 | |||
| May 2 | |||
| May 9 |
Spring Abstracts
Archive of past Geometry seminars
2012-2013: Geometry_and_Topology_Seminar_2012-2013
2011-2012: Geometry_and_Topology_Seminar_2011-2012
2010: Fall-2010-Geometry-Topology