Braid #148

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: $$\frac{2t^{6} - 7t^{5} + 13t^{4} - 15t^{3} + 13t^{2} - 7t + 2}{t^{3}}$$ Signatures:

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Gael Collinet and Pierre Guillot, 2010.