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Knots and Representation Theory
November 13, 2018 18:30, Moscow
 


Cluster variables on a braid

Seokbeom Yoon

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Abstract: Given a braid presentation $D$ of a hyperbolic knot, Hikami and Inoue considered equations arising from a sequence of cluster mutations determined by $D$. They showed that any solution of these equations determines a boundary-parabolic $PSL(2;\mathbb{C})$-representation of the knot group. They also conjectured the existence of solution corresponding to the geometric representation. In this talk we will show that a boundary-parabolic representation $\rho$ arises from a solution if and only if the length of $D$ modulo 2 equals the obstruction to lifting $\rho$ to a boundary-parabolic $PSL(2;\mathbb{C})$-representation. In particular, the Hikami-Inoue conjecture holds if and only if the length of $D$ is odd. This work is joint with Jinseok Cho and Christian Zickert.

Language: English

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