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linear algebra - Will identity matrix necessarily appear in powers of any permutation matrix? - Mathematics Stack Exchange
https://math.stackexchange.com/questions/1133722/will-identity-matrix-necessarily-appear-in-powers-of-any-permutation-matrix
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linear-algebra
matrices
Having nothing better to do, I tried multiplying different (but mostly small) permutation matrices with themselves, and so far at some point I'd always run into an identity matrix. Was I just "luc...
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