The transpose of a permutation matrix is its inverse. ... This is a question from the free Harvard online abstract algebra lectures. I'm posting my solutions here ... ... <看更多>

PERMUTATION : Helpful notes on permutation matrices and vectors. ... The inverse of a permutation matrix is its transpose: %. % Pinv = inv(P) = P'. ... <看更多>

Extra question: Now I want the inverse of L above in operator form (the one-line syntax in the answer). In matrix form the inverse is the ... ... <看更多>