Braid #156

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

Determinant: $$\frac{-2t^{6} + 10t^{5} - 23t^{4} + 31t^{3} - 23t^{2} + 10t - 2}{t^{3}}$$ Signatures:

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Gael Collinet and Pierre Guillot, 2010.