Seminar | March 6 | 4-5 p.m. | 3 Evans Hall
Diane Hoffoss, University of San Diego
We will introduce Scharlemann-Thompson handle decompositions of a 3-manifold, and a generalization of this which we call a graph decomposition. Using these, we define topological measures of complexity for the manifold. In the case where the manifold has additional metric structure, we use Morse and Morse-like functions to give geometric definitions of complexity as well. We then show that some of these geometric and topological complexities are linearly related for hyperbolic 3-manifolds.