Excedances on Permutation
Positions with p(i) > i.
Called as CombinatorialStat(x, "Excedances"). The head's page has its examples.
Live
FindStat St000155
The number of exceedances (also excedences) of a permutation.
| Object | Value |
|---|---|
[1] | 0 |
[1,2] | 0 |
[2,1] | 1 |
[1,2,3] | 0 |
[1,3,2] | 1 |
[2,1,3] | 1 |
[2,3,1] | 2 |
[3,1,2] | 1 |
Data from FindStat, the combinatorial statistic finder; the page at findstat.org/St000155 has the rest.