Pure Maths Colloquium: Representation spaces of knot groups in Lie groups
26 February 2001 16:00 in CM221
Let pi be the group of a knot and G be a Lie group. We describe the local structure of the algebraic variety of representations of pi in G in the neighbourhood of an abelian representation. This description involves the cohomology groups of pi with coefficients in the Lie algebra of G and the Alexander polynomial of the knot.
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