Permutation from CycleDecomposition
The permutation a cycle decomposition describes.
Declines a decomposition that isn't canonical: a point missing or repeated, a cycle not starting at its least point, or cycles out of order.
Called as CombinatorialMap(x, "Permutation"). The head's page has its examples.
Also from
The same name out of other carriers, each its own implementation: SubexcedantSeq.