Geometry and Topology Seminar

Series: Geometry and Topology Seminar Series

Alternating knot with unknotting number one

Duncan Mccoy, PhD. Student, Mathematics, University of Glasgow,

The unknotting number is a classical knot invariant which is easy to define but generally hard to compute. It is now known that an alternating knot has unknotting number one if and only if it has an unknotting crossing in every alternating diagram. This talk will explain the main ideas behind the proof of this fact.

Event Sponsors:

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For more information, please contact Maria Trnkiova by email at [email protected] or visit http://www.math.caltech.edu/~gt/.