Characteristic polynomial
$$\begin{equation}\left(\lambda + 2\right) \left(\lambda^{13} + 6 \lambda^{12} - 552 \lambda^{10} - 4066 \lambda^{9} - 17907 \lambda^{8} - 67631 \lambda^{7} - 220435 \lambda^{6} - 434984 \lambda^{5} - 826057 \lambda^{4} - 1335480 \lambda^{3} - 1320840 \lambda^{2} - 1681440 \lambda - 1397776\right)\notag\end{equation}$$
Minimal polynomial
$$\begin{equation}\left(\lambda + 2\right) \left(\lambda^{13} + 6 \lambda^{12} - 552 \lambda^{10} - 4066 \lambda^{9} - 17907 \lambda^{8} - 67631 \lambda^{7} - 220435 \lambda^{6} - 434984 \lambda^{5} - 826057 \lambda^{4} - 1335480 \lambda^{3} - 1320840 \lambda^{2} - 1681440 \lambda - 1397776\right)\notag\end{equation}$$
Quantum multiplication matrix
$$\begin{equation}\begin{pmatrix}0 & 0 & 2 & 2 & 9 & 9 & 6 & 9 & 12 & 6 & 4 & 12 & 4 & 5 \\ 1 & -1 & 0 & 0 & 2 & 2 & 0 & 4 & 4 & 2 & 3 & 6 & 0 & 0 \\ 1 & 1 & 0 & 2 & -2 & 0 & -2 & -4 & -4 & -2 & 3 & 0 & 3 & 4 \\ 1 & 0 & 0 & -1 & 2 & 0 & 2 & 4 & 4 & 2 & 3 & 9 & 3 & 0 \\ 0 & 1 & 3 & 1 & 0 & 3 & 0 & -2 & 1 & 1 & -4 & -4 & -2 & 0 \\ 0 & 1 & 0 & 1 & 0 & -2 & 0 & 1 & 0 & 0 & 2 & 4 & 0 & 0 \\ 0 & 1 & -2 & -1 & -1 & -1 & -1 & 1 & -1 & -1 & 6 & 4 & 4 & 3 \\ 0 & 0 & 1 & 0 & 1 & 0 & 1 & 1 & 2 & 1 & 0 & 0 & 0 & 0 \\ 0 & 0 & 1 & 2 & 0 & 1 & 0 & -1 & -1 & 0 & 0 & 0 & 0 & 3 \\ 0 & 0 & 0 & 1 & 0 & 0 & 0 & 1 & 0 & -1 & 2 & 0 & 2 & 0 \\ 0 & 0 & 0 & 0 & 1 & -1 & -\frac{2}{3} & \frac{10}{3} & 2 & 1 & 0 & 3 & 1 & -\frac{4}{3} \\ 0 & 0 & 0 & 0 & 1 & 3 & \frac{1}{3} & \frac{1}{3} & 3 & 2 & 0 & -1 & 0 & \frac{2}{3} \\ 0 & 0 & 0 & 0 & 3 & 3 & \frac{8}{3} & -\frac{1}{3} & -2 & -1 & 0 & 0 & -1 & \frac{4}{3} \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 4 & 8 & 3 & 0\end{pmatrix}\notag\end{equation}$$