Permutation matrix
= Permutation matrix
{title2=$P$}
{wiki}
A permutation matrix has exactly one entry equal to one in each row and column and zeros elsewhere. Left or right multiplication permutes coordinates, and $P^{-1}=P^T$.
= Permutation matrix
{title2=$P$}
{wiki}
A permutation matrix has exactly one entry equal to one in each row and column and zeros elsewhere. Left or right multiplication permutes coordinates, and $P^{-1}=P^T$.