Bohemian Matrices

Tridiagonal 20x20 2
A density plot in the complex plane of the Bohemian eigenvalues of a sample of 25 million 20x20 tridiagonal matrices with entries sampled from {-1, 1}. Color represents the eigenvalue density and the plot is viewed on [-3-3i, 3+3i]. Real eigenvalues have been omitted from this plot.