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Department of Mathematical Sciences

Seminar Archives

On this page you can find information about seminars in this and previous academic years, where available on the database.

Geometry and Topology Seminar: Heegaard Floer homology, Dehn surgery and the mapping cone formula.

Presented by Fyodor Gainullin., Imperial College.

5 March 2015 13:00 in CM221

One of the biggest challenges in low-dimensional topology is to understand Dehn surgery. Relatively recently defined Heegaard Floer homology has been used successfully in answering many questions about Dehn surgery. I will describe the basics of Heegaard Floer homology, exemplify some applications and outline why Heegaard Floer homology is so suitable when dealing with surgery. I will sketch the proof of the fact that only finitely many alternating knots can give a fixed space by surgery.

Contact mark.a.powell@durham.ac.uk or andrew.lobb@durham.ac.uk or wilhelm.klingenberg@durham.ac.uk for more information