Braid #83

Braid group element: $\sigma_{1}^{2} \sigma_{2}^{1} \sigma_{1}^{-1} \sigma_{2}^{1} \sigma_{1}^{1} \sigma_{3}^{-1} \sigma_{2}^{1} \sigma_{1}^{-1} \sigma_{2}^{1} \sigma_{3}^{-1}\in B_{4}$
Plot:

Determinant: $$\frac{-t^{4} + 7t^{3} - 11t^{2} + 7t - 1}{t^{2}}$$ Signatures:

$-2$ $0$

Gael Collinet and Pierre Guillot, 2010.