Braid #149

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

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

$-4$ $-2$ $0$

Gael Collinet and Pierre Guillot, 2010.