Bohemian Matrices

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Eigenvalues of the matrix $$\begin{bmatrix} 0 & 0 & 0 & A\\ -1 & -1 & -1 & 0\\ B & 0 & 0 & 0\\ -1 & -1 & -1 & -1 \end{bmatrix}$$ where $A$ and $B$ are independent continuous uniform random variables on $(-4, 4)$. This image represents a sample of 5 million matrices. Note that this class of matrices is not Bohemian as it is sampled from a continuous distribution. Viewed on [-3-3i, 3+3i].