inversions w
A permutation $p$ has an inversion $(i,j)$ if $i < j$ and $p(i) > p(j)$. inversions computes all of the inversions of a permutation.
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The object inversions is a method function.
The source of this document is in /build/reproducible-path/macaulay2-1.25.05+ds/M2/Macaulay2/packages/Permutations/Documentation/mainDocs.m2:371:0.