Unknotting Knots

Duncan McCoy (University of Glasgow)

Friday 17th January, 2014 16:00-17:00 Maths 417

Abstract

The unknotting number is a classical knot invariant which is easy to define but frequently difficult to calculate exactly. I will give a brief overview of some knot theory and and explain some of the various ingredients that have been used in the calculation of unknotting numbers. 

 

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