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2017-10-10 18:35:53 -0500 asked a question Hi, there: I am computing the eigenvalues and eigenvectors of the following complex matrix. It looks that Sage does not give the right answer?

Here is the matrix that I use

B = matrix(CDF, [ [-1, 0, 1, 0, 0, 0, 1, I, -1 ], [0, 0, 0, -I, 1, I, 1, I, 0], [-1, -I, 1, -I, 1, 0, 1, 0, I], [0, 0, 0, 0, 1, I, 1, I, -1], [0, -I, 1, -I, 1, I, 1, I, 0], [-1, -I, 1, -I, 1, 0, 0, 0, 0], [-1, 0, 1, 0, 1, I, 1, I, -1], [0, -I, 1, -I, 1, I, 0, 0, 0], [-1, -I, 1, 0, 0, 0, 1, 0, -1]])