NCPermutationMatrix[aListOfIntegers]

Aliases: None.

Description: $NCPermutationMatrix[aListOfIntegers]$ returns the permutation matrix associated with the list of integers. It is just the identity matrix with its columns re-ordered.

Arguments: $aListOfIntegers$ is an encoding which specifies where the 1's occur in each column. e.g., aListOfintegers $=\{2,4,3,1\}$ represents the permutation matrix

$$P = \left[ \begin{array}{cccc} 0 & 0 & 0 & 1 \\ 1 & 0 & 0 & 0\ 0& 0 & 1 & 0 \ 0 & 1 & 0 & 0 \end{array} \right]$$

Comments / Limitations: None.