Braid #145

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

Determinant: $$\frac{2t^{6} - 8t^{5} + 15t^{4} - 17t^{3} + 15t^{2} - 8t + 2}{t^{3}}$$ Signatures:

$-2$ $0$

Gael Collinet and Pierre Guillot, 2010.