Presented by: 
Professor Peter Scott (Michigan)
Mon 7 Mar, 2:00 pm - 3:00 pm
N202 in Hawken (50)

The JSJ decomposition of a 3-manifold was established by Jaco and Shalen, and independently by Johannson in the 1970's. This decomposition was very relevant for Perelman's famous work solving Thurston's Geometrization Conjecture.

The aim of this talk is to introduce joint work with Gadde Swarup on an algebraic analogue of the JSJ decomposition. I will not assume any knowledge of 3-manifolds or the JSJ decomposition, and I will use surfaces to introduce the ideas I want to discuss. Then I will briefly discuss how these ideas relate to the JSJ decomposition.

No prior knowledge of any of the topics mentioned is assumed.