UM Math Graduate Students Seminar

Eric Harper
McMaster University

will present

SU(N) Casson-Lin invariants for links

Friday, September 28, 2012, 3:45pm
Ungar Building Room 402


Abstract:We will introduce a family of invariants of links in the 3-sphere using projective SU(N) representations and braid theory. We will give some examples of computations, including the theorem that the SU(2) invariant of a two-component link is the linking number between its components.


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