Identifier
Values
{{1}} => [1] => [1] => [1] => 0
{{1,2}} => [2,1] => [1,2] => [1,2] => 0
{{1},{2}} => [1,2] => [1,2] => [1,2] => 0
{{1,2,3}} => [2,3,1] => [1,2,3] => [1,2,3] => 0
{{1,2},{3}} => [2,1,3] => [1,2,3] => [1,2,3] => 0
{{1,3},{2}} => [3,2,1] => [1,3,2] => [1,3,2] => 2
{{1},{2,3}} => [1,3,2] => [1,2,3] => [1,2,3] => 0
{{1},{2},{3}} => [1,2,3] => [1,2,3] => [1,2,3] => 0
{{1,2,3,4}} => [2,3,4,1] => [1,2,3,4] => [1,2,3,4] => 0
{{1,2,3},{4}} => [2,3,1,4] => [1,2,3,4] => [1,2,3,4] => 0
{{1,2,4},{3}} => [2,4,3,1] => [1,2,4,3] => [1,2,4,3] => 2
{{1,2},{3,4}} => [2,1,4,3] => [1,2,3,4] => [1,2,3,4] => 0
{{1,2},{3},{4}} => [2,1,3,4] => [1,2,3,4] => [1,2,3,4] => 0
{{1,3,4},{2}} => [3,2,4,1] => [1,3,4,2] => [1,3,4,2] => 4
{{1,3},{2,4}} => [3,4,1,2] => [1,3,2,4] => [1,3,2,4] => 2
{{1,3},{2},{4}} => [3,2,1,4] => [1,3,2,4] => [1,3,2,4] => 2
{{1,4},{2,3}} => [4,3,2,1] => [1,4,2,3] => [1,4,2,3] => 2
{{1},{2,3,4}} => [1,3,4,2] => [1,2,3,4] => [1,2,3,4] => 0
{{1},{2,3},{4}} => [1,3,2,4] => [1,2,3,4] => [1,2,3,4] => 0
{{1,4},{2},{3}} => [4,2,3,1] => [1,4,2,3] => [1,4,2,3] => 2
{{1},{2,4},{3}} => [1,4,3,2] => [1,2,4,3] => [1,2,4,3] => 2
{{1},{2},{3,4}} => [1,2,4,3] => [1,2,3,4] => [1,2,3,4] => 0
{{1},{2},{3},{4}} => [1,2,3,4] => [1,2,3,4] => [1,2,3,4] => 0
{{1,2,3,4,5}} => [2,3,4,5,1] => [1,2,3,4,5] => [1,2,3,4,5] => 0
{{1,2,3,4},{5}} => [2,3,4,1,5] => [1,2,3,4,5] => [1,2,3,4,5] => 0
{{1,2,3,5},{4}} => [2,3,5,4,1] => [1,2,3,5,4] => [1,2,3,5,4] => 2
{{1,2,3},{4,5}} => [2,3,1,5,4] => [1,2,3,4,5] => [1,2,3,4,5] => 0
{{1,2,3},{4},{5}} => [2,3,1,4,5] => [1,2,3,4,5] => [1,2,3,4,5] => 0
{{1,2,4,5},{3}} => [2,4,3,5,1] => [1,2,4,5,3] => [1,2,4,5,3] => 4
{{1,2,4},{3,5}} => [2,4,5,1,3] => [1,2,4,3,5] => [1,2,4,3,5] => 2
{{1,2,4},{3},{5}} => [2,4,3,1,5] => [1,2,4,3,5] => [1,2,4,3,5] => 2
{{1,2,5},{3,4}} => [2,5,4,3,1] => [1,2,5,3,4] => [1,2,5,3,4] => 2
{{1,2},{3,4,5}} => [2,1,4,5,3] => [1,2,3,4,5] => [1,2,3,4,5] => 0
{{1,2},{3,4},{5}} => [2,1,4,3,5] => [1,2,3,4,5] => [1,2,3,4,5] => 0
{{1,2,5},{3},{4}} => [2,5,3,4,1] => [1,2,5,3,4] => [1,2,5,3,4] => 2
{{1,2},{3,5},{4}} => [2,1,5,4,3] => [1,2,3,5,4] => [1,2,3,5,4] => 2
{{1,2},{3},{4,5}} => [2,1,3,5,4] => [1,2,3,4,5] => [1,2,3,4,5] => 0
{{1,2},{3},{4},{5}} => [2,1,3,4,5] => [1,2,3,4,5] => [1,2,3,4,5] => 0
{{1,3,4,5},{2}} => [3,2,4,5,1] => [1,3,4,5,2] => [1,3,4,5,2] => 6
{{1,3,4},{2,5}} => [3,5,4,1,2] => [1,3,4,2,5] => [1,3,4,2,5] => 4
{{1,3,4},{2},{5}} => [3,2,4,1,5] => [1,3,4,2,5] => [1,3,4,2,5] => 4
{{1,3,5},{2,4}} => [3,4,5,2,1] => [1,3,5,2,4] => [1,3,5,2,4] => 4
{{1,3},{2,4,5}} => [3,4,1,5,2] => [1,3,2,4,5] => [1,3,2,4,5] => 2
{{1,3},{2,4},{5}} => [3,4,1,2,5] => [1,3,2,4,5] => [1,3,2,4,5] => 2
{{1,3,5},{2},{4}} => [3,2,5,4,1] => [1,3,5,2,4] => [1,3,5,2,4] => 4
{{1,3},{2,5},{4}} => [3,5,1,4,2] => [1,3,2,5,4] => [1,3,2,5,4] => 4
{{1,3},{2},{4,5}} => [3,2,1,5,4] => [1,3,2,4,5] => [1,3,2,4,5] => 2
{{1,3},{2},{4},{5}} => [3,2,1,4,5] => [1,3,2,4,5] => [1,3,2,4,5] => 2
{{1,4,5},{2,3}} => [4,3,2,5,1] => [1,4,5,2,3] => [1,4,5,2,3] => 4
{{1,4},{2,3,5}} => [4,3,5,1,2] => [1,4,2,3,5] => [1,4,2,3,5] => 2
{{1,4},{2,3},{5}} => [4,3,2,1,5] => [1,4,2,3,5] => [1,4,2,3,5] => 2
{{1,5},{2,3,4}} => [5,3,4,2,1] => [1,5,2,3,4] => [1,5,2,3,4] => 2
{{1},{2,3,4,5}} => [1,3,4,5,2] => [1,2,3,4,5] => [1,2,3,4,5] => 0
{{1},{2,3,4},{5}} => [1,3,4,2,5] => [1,2,3,4,5] => [1,2,3,4,5] => 0
{{1,5},{2,3},{4}} => [5,3,2,4,1] => [1,5,2,3,4] => [1,5,2,3,4] => 2
{{1},{2,3,5},{4}} => [1,3,5,4,2] => [1,2,3,5,4] => [1,2,3,5,4] => 2
{{1},{2,3},{4,5}} => [1,3,2,5,4] => [1,2,3,4,5] => [1,2,3,4,5] => 0
{{1},{2,3},{4},{5}} => [1,3,2,4,5] => [1,2,3,4,5] => [1,2,3,4,5] => 0
{{1,4,5},{2},{3}} => [4,2,3,5,1] => [1,4,5,2,3] => [1,4,5,2,3] => 4
{{1,4},{2,5},{3}} => [4,5,3,1,2] => [1,4,2,5,3] => [1,4,2,5,3] => 4
{{1,4},{2},{3,5}} => [4,2,5,1,3] => [1,4,2,3,5] => [1,4,2,3,5] => 2
{{1,4},{2},{3},{5}} => [4,2,3,1,5] => [1,4,2,3,5] => [1,4,2,3,5] => 2
{{1,5},{2,4},{3}} => [5,4,3,2,1] => [1,5,2,4,3] => [1,5,2,4,3] => 2
{{1},{2,4,5},{3}} => [1,4,3,5,2] => [1,2,4,5,3] => [1,2,4,5,3] => 4
{{1},{2,4},{3,5}} => [1,4,5,2,3] => [1,2,4,3,5] => [1,2,4,3,5] => 2
{{1},{2,4},{3},{5}} => [1,4,3,2,5] => [1,2,4,3,5] => [1,2,4,3,5] => 2
{{1,5},{2},{3,4}} => [5,2,4,3,1] => [1,5,2,3,4] => [1,5,2,3,4] => 2
{{1},{2,5},{3,4}} => [1,5,4,3,2] => [1,2,5,3,4] => [1,2,5,3,4] => 2
{{1},{2},{3,4,5}} => [1,2,4,5,3] => [1,2,3,4,5] => [1,2,3,4,5] => 0
{{1},{2},{3,4},{5}} => [1,2,4,3,5] => [1,2,3,4,5] => [1,2,3,4,5] => 0
{{1,5},{2},{3},{4}} => [5,2,3,4,1] => [1,5,2,3,4] => [1,5,2,3,4] => 2
{{1},{2,5},{3},{4}} => [1,5,3,4,2] => [1,2,5,3,4] => [1,2,5,3,4] => 2
{{1},{2},{3,5},{4}} => [1,2,5,4,3] => [1,2,3,5,4] => [1,2,3,5,4] => 2
{{1},{2},{3},{4,5}} => [1,2,3,5,4] => [1,2,3,4,5] => [1,2,3,4,5] => 0
{{1},{2},{3},{4},{5}} => [1,2,3,4,5] => [1,2,3,4,5] => [1,2,3,4,5] => 0
search for individual values
searching the database for the individual values of this statistic
/ search for generating function
searching the database for statistics with the same generating function
click to show known generating functions       
Description
The flag excedance statistic of a signed permutation.
This is the number of negative entries plus twice the number of excedances of the signed permutation. That is,
$$fexc(\sigma) = 2exc(\sigma) + neg(\sigma),$$
where
$$exc(\sigma) = |\{i \in [n-1] \,:\, \sigma(i) > i\}|$$
$$neg(\sigma) = |\{i \in [n] \,:\, \sigma(i) < 0\}|$$
It has the same distribution as the flag descent statistic.
Map
cycle-as-one-line notation
Description
Return the permutation obtained by concatenating the cycles of a permutation, each written with minimal element first, sorted by minimal element.
Map
to signed permutation
Description
The signed permutation with all signs positive.
Map
to permutation
Description
Sends the set partition to the permutation obtained by considering the blocks as increasing cycles.