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MARTEDI' 17 GENNAIO 2012 16:00-17:00, Sala Riunioni (Dip. Matematica)

SEMINARIO Concordance groups of links Brendan Owens (University of Glasgow)

Abstract: In 1957 Fox and Milnor observed that the set of classical knots gives rise to a group by taking concordance classes, and the concordance group C of knots has been an important object of study ever since. A natural question is to find an inclusion of C into a link concordance group, induced by the inclusion of knots into links. I will discuss a couple of approaches to this problem. This is joint work with Andrew Donald.