such that 
and 
.muEC::SG::Perm2ListInv – The inversions of a permutation
computes the set of inversions of a permutation.
Call:
muEC::SG::Perm2ListInv(perm)
Parameters:
|
perm: |
any list denoting a permutation |
Related Functions:
Details:
The muEC::SG::Perm2ListInv function calculates the list of all inversions of a permutation. The result is in lexicographic ordering.
The set of inversions is a set of pairs of positions such that and .
muEC::SG::Perm2ListInv( [4,1,3,2] );
