Characteristic polynomial
$$\begin{equation}\left(\lambda + 3\right)^{2} \left(\lambda - 1\right) \left(\lambda^{13} + 7 \lambda^{12} + 24 \lambda^{11} - 156 \lambda^{10} - 3364 \lambda^{9} - 28279 \lambda^{8} - 150557 \lambda^{7} - 586293 \lambda^{6} - 1647558 \lambda^{5} - 2388965 \lambda^{4} - 694034 \lambda^{3} + 3848151 \lambda^{2} + 33287746 \lambda + 56630941\right)\notag\end{equation}$$
Minimal polynomial
$$\begin{equation}\left(\lambda + 3\right) \left(\lambda - 1\right) \left(\lambda^{13} + 7 \lambda^{12} + 24 \lambda^{11} - 156 \lambda^{10} - 3364 \lambda^{9} - 28279 \lambda^{8} - 150557 \lambda^{7} - 586293 \lambda^{6} - 1647558 \lambda^{5} - 2388965 \lambda^{4} - 694034 \lambda^{3} + 3848151 \lambda^{2} + 33287746 \lambda + 56630941\right)\notag\end{equation}$$
Quantum multiplication matrix
$$\begin{equation}\begin{pmatrix}0 & 2 & 2 & 0 & 0 & 0 & 0 & 6 & 6 & 6 & 6 & 8 & 8 & 16 & 8 & 10 \\ 1 & -1 & 1 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 6 & 6 & 6 & 0 & 8 \\ 1 & 1 & -1 & 0 & 0 & 0 & 0 & 0 & 0 & 4 & 4 & 0 & 0 & 0 & 6 & 0 \\ 1 & 0 & 1 & 0 & 2 & 2 & 0 & 0 & 0 & -4 & -6 & 0 & -3 & 0 & -6 & 0 \\ 1 & 0 & 0 & 0 & -1 & 0 & 2 & 2 & 2 & 0 & 2 & 0 & 3 & 6 & 6 & 8 \\ 0 & 2 & 1 & 1 & 0 & -1 & 2 & 0 & 1 & 0 & 0 & 0 & -2 & 0 & 0 & 0 \\ 0 & 1 & 0 & 0 & 1 & 0 & -2 & 1 & 0 & 0 & 0 & 0 & 2 & 0 & 0 & 6 \\ 0 & 0 & 1 & 0 & 1 & 0 & 1 & -2 & 0 & 0 & 1 & 0 & 0 & 0 & 4 & 0 \\ 0 & 0 & 2 & 1 & 0 & 1 & 0 & 2 & -1 & 0 & -1 & 0 & 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 1 & 2 & 0 & 0 & 1 & 0 & -1 & -1 & 2 & 0 & 2 & -4 & 0 \\ 0 & 0 & 0 & 1 & 0 & 0 & 0 & 0 & 1 & 2 & 1 & 0 & 2 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 & 0 & 1 & 3 & 1 & -1 & 1 & -\frac{1}{2} & -2 & -\frac{1}{2} & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 & 0 & 2 & 0 & 0 & 3 & 0 & 2 & 2 & 0 & 2 & 0 & 0 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 3 & 2 & 1 & \frac{1}{2} & 1 & \frac{1}{2} & -1 & 0 & 0 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 2 & \frac{3}{2} & 0 & 0 & 1 & 0 & 2 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 3 & 2 & 4 & 2 & 0\end{pmatrix}\notag\end{equation}$$