Let B be obtained from A by permuting both its rows and columns using the same permutation

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Let B be obtained from A by permuting both its rows and columns using the same permutation π, so bij = aπ(i),π(j). Prove that A and B have the same eigenvalues. How are their eigenvectors related?
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Applied Linear Algebra

ISBN: 978-0131473829

1st edition

Authors: Peter J. Olver, Cheri Shakiban

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