Characteristic polynomial
$$\begin{equation}\left(\lambda + 3\right)^{3} \left(\lambda + 4\right) \left(\lambda - 5\right) \left(\lambda^{3} + 7 \lambda^{2} + 34 \lambda + 37\right) \left(\lambda^{3} + 7 \lambda^{2} - 2 \lambda - 67\right)^{2} \left(\lambda^{3} - 9 \lambda^{2} - 54 \lambda - 27\right)\notag\end{equation}$$
Minimal polynomial
$$\begin{equation}\left(\lambda + 3\right) \left(\lambda + 4\right) \left(\lambda - 5\right) \left(\lambda^{3} + 7 \lambda^{2} + 34 \lambda + 37\right) \left(\lambda^{3} + 7 \lambda^{2} - 2 \lambda - 67\right) \left(\lambda^{3} - 9 \lambda^{2} - 54 \lambda - 27\right)\notag\end{equation}$$
Quantum multiplication matrix
$$\begin{equation}\begin{pmatrix}0 & 4 & 4 & 8 & 4 & 6 & 12 & 6 & 12 & 6 & 3 & 15 & 16 & 16 & 4 & 4 & 10 \\ 1 & -1 & 1 & 1 & 0 & 2 & 6 & 4 & 2 & 0 & 0 & 4 & 6 & 6 & 3 & 0 & 4 \\ 1 & 1 & -1 & 1 & 0 & 2 & 2 & 0 & 6 & 4 & 0 & 4 & 6 & 6 & 0 & 3 & 4 \\ 1 & 1 & 1 & -1 & 2 & 2 & 2 & 0 & 2 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 \\ 1 & 0 & 0 & 1 & -1 & 0 & 2 & 4 & 2 & 4 & 2 & 6 & 6 & 6 & 3 & 3 & 8 \\ 0 & 1 & 1 & 0 & 0 & -2 & 1 & 0 & 1 & 0 & 0 & 0 & 4 & 4 & 0 & 0 & 3 \\ 0 & 1 & 0 & 1 & 0 & 1 & -2 & 2 & 1 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 \\ 0 & 1 & 0 & 0 & 1 & 0 & 1 & -2 & 0 & 1 & 0 & 1 & 2 & 2 & 2 & 0 & 3 \\ 0 & 0 & 1 & 1 & 0 & 1 & 1 & 0 & -2 & 2 & 0 & 0 & 0 & 0 & 0 & 0 & 0 \\ 0 & 0 & 1 & 0 & 1 & 0 & 0 & 1 & 1 & -2 & 0 & 1 & 2 & 2 & 0 & 2 & 3 \\ 0 & 0 & 0 & 1 & 3 & 0 & 0 & 1 & 0 & 1 & -1 & 1 & 0 & 2 & 4 & 4 & 6 \\ 0 & 0 & 0 & 2 & 1 & 0 & 1 & 1 & 1 & 1 & 1 & -1 & 2 & 2 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 & 0 & 1 & 5 & 2 & 5 & 2 & 2 & 10 & 1 & 6 & 4 & 4 & 4 \\ 0 & 0 & 0 & 0 & 0 & 1 & -2 & 0 & -2 & 0 & -2 & -8 & -1 & -5 & -3 & -3 & -2 \\ 0 & 0 & 0 & 0 & 0 & 0 & 3 & 4 & 0 & 0 & 2 & 4 & 1 & 2 & 0 & 2 & 4 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 3 & 4 & 2 & 4 & 1 & 2 & 2 & 0 & 4 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 3 & 4 & 2 & 2 & 0\end{pmatrix}\notag\end{equation}$$