Hello everyone,

Today will be holding our topology seminar in MSCS 509 at 3:30. I will be speaking. My title and abstract are below. Also, for the rest of the semester we have Eric Chesebro visiting on April 18, Birch defending April 19, and Eric Towers speaking May 2. Hope to see you there!

Title: Triangulations and Trace fields Speaker: Neil Hoffman, Oklahoma State University Date: Apr 4, 2023 Time: 3:30 PM Room: MSCS 509 Abstract: The trace field of a hyperbolic 3-manifold is an invariant determined by arithmetic data. I will give a construction for this data and describe how 1) it can be computed from a triangulation of the manifold and 2) how complexity of the invariant can grow relative the number of tetrahedra in a triangulation. ______________________ Neil R. Hoffman Assistant Professor Department of Mathematics 523 Math Science Building Oklahoma State University Stillwater, OK 74078-1058 405-744-7791 http://math.okstate.edu/people/nhoffman