gives the signature of the permutation needed to place the elements of list in canonical order.
- The signature of the permutation is (-1)n, where n is the number of transpositions of pairs of elements that must be composed to build up the permutation.
- If any two elements of list are the same, Signature[list] gives 0.
- Signature can be used on expressions with any head, not only List.
Properties & Relations (2)