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Durham University

Department of Mathematical Sciences

Seminars

This week's seminars

Pure Maths Colloquium: Signatures in knot theory

Presented by Anthony Conway, Durham University

28 January 2019 16:00 in CM219

This talk will consist of an introduction to the Levine-Tristram signature of a knot. After providing some definitions, we will investigate the following questions : How many crossing changes does it take to unknot a knot? What is the minimal genus of a surface bounded by a knot in the 4-ball? Can a knot be isotopic to its mirror image?

Contact michael.r.magee@durham.ac.uk for more information

Research Seminars by Series

The research groups in the Department of Mathematical Sciences hold several seminar series in term time. Information on date, time and location are available here.

For information on previous years' seminars please see the seminar archives pages.