Duncan McCoy (Université du Québec à Montréal)

Title: Seifert fibered surgeries

Abstract: Dehn surgery is an operation where one constructs a 3-manifold by taking a knot in the 3-sphere, cutting out a tubular neighbourhood and then gluing in another solid torus. Despite its simple nature, there are still many interesting questions about how the topology can be changed under such surgeries. Since the Seifert fibered spaces form an important class of 3-manifolds, it is natural to ask which of these can be obtained by Dehn surgery on a knot in the 3-sphere.

I will begin with a gentle introduction to Dehn surgery and Seifert fibered spaces. If I can successfully convince you that both are interesting, I will use the time remaining to discuss some joint work with Ahmad Issa on the aforementioned question.