Beads: From Lie algebras to Lie groups

Details Beads: From Lie algebras to Lie groups Beads: From Lie algebras to Lie groups

2002-01-08

arxiv.org/abs/math/0201056v3

Mathematics

Geometric Topology

AMS-LaTeX, 8 pages with 4 figures

Scientific paper

The Kontsevich integral of a knot is a powerful invariant which takes values in an algebra of trivalent graphs with legs. Given a Lie algebra, the Kontsevich integral determines an invariant of knots (the so-called colored Jones function) with values in the symmetric algebra of the Lie algebra. Recently A. Kricker and the author constructed a rational form of the Kontsevich integral which takes values in an algebra of trivalent graphs with beads. After replacing beads by an exponential legs, this rational form recovers the Kontsevich integral. The goal of the paper is to explain the relation between beads and functions defined on a Lie group. As an application, we provide a rational form for the colored Jones function of a knot, conjectured by Rozansky. This is a revised version.

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