Identifier
-
Mp00023:
Dyck paths
—to non-crossing permutation⟶
Permutations
Mp00223: Permutations —runsort⟶ Permutations
Mp00127: Permutations —left-to-right-maxima to Dyck path⟶ Dyck paths
St001232: Dyck paths ⟶ ℤ
Values
[1,0] => [1] => [1] => [1,0] => 0
[1,0,1,0] => [1,2] => [1,2] => [1,0,1,0] => 1
[1,1,0,0] => [2,1] => [1,2] => [1,0,1,0] => 1
[1,0,1,1,0,0] => [1,3,2] => [1,3,2] => [1,0,1,1,0,0] => 2
[1,1,0,0,1,0] => [2,1,3] => [1,3,2] => [1,0,1,1,0,0] => 2
[1,0,1,1,0,0,1,0] => [1,3,2,4] => [1,3,2,4] => [1,0,1,1,0,0,1,0] => 3
[1,0,1,1,1,0,0,0] => [1,4,3,2] => [1,4,2,3] => [1,0,1,1,1,0,0,0] => 3
[1,1,0,0,1,1,0,0] => [2,1,4,3] => [1,4,2,3] => [1,0,1,1,1,0,0,0] => 3
[1,1,0,1,0,0,1,0] => [2,3,1,4] => [1,4,2,3] => [1,0,1,1,1,0,0,0] => 3
[1,1,1,0,0,0,1,0] => [3,2,1,4] => [1,4,2,3] => [1,0,1,1,1,0,0,0] => 3
[1,0,1,1,0,0,1,1,0,0] => [1,3,2,5,4] => [1,3,2,5,4] => [1,0,1,1,0,0,1,1,0,0] => 4
[1,0,1,1,1,0,0,0,1,0] => [1,4,3,2,5] => [1,4,2,5,3] => [1,0,1,1,1,0,0,1,0,0] => 5
[1,0,1,1,1,0,0,1,0,0] => [1,4,3,5,2] => [1,4,2,3,5] => [1,0,1,1,1,0,0,0,1,0] => 4
[1,0,1,1,1,0,1,0,0,0] => [1,5,3,4,2] => [1,5,2,3,4] => [1,0,1,1,1,1,0,0,0,0] => 4
[1,0,1,1,1,1,0,0,0,0] => [1,5,4,3,2] => [1,5,2,3,4] => [1,0,1,1,1,1,0,0,0,0] => 4
[1,1,0,0,1,1,0,0,1,0] => [2,1,4,3,5] => [1,4,2,3,5] => [1,0,1,1,1,0,0,0,1,0] => 4
[1,1,0,0,1,1,1,0,0,0] => [2,1,5,4,3] => [1,5,2,3,4] => [1,0,1,1,1,1,0,0,0,0] => 4
[1,1,0,1,0,0,1,1,0,0] => [2,3,1,5,4] => [1,5,2,3,4] => [1,0,1,1,1,1,0,0,0,0] => 4
[1,1,0,1,0,1,0,0,1,0] => [2,3,4,1,5] => [1,5,2,3,4] => [1,0,1,1,1,1,0,0,0,0] => 4
[1,1,0,1,1,0,0,0,1,0] => [2,4,3,1,5] => [1,5,2,4,3] => [1,0,1,1,1,1,0,0,0,0] => 4
[1,1,1,0,0,0,1,1,0,0] => [3,2,1,5,4] => [1,5,2,3,4] => [1,0,1,1,1,1,0,0,0,0] => 4
[1,1,1,0,0,1,0,0,1,0] => [3,2,4,1,5] => [1,5,2,4,3] => [1,0,1,1,1,1,0,0,0,0] => 4
[1,1,1,0,1,0,0,0,1,0] => [4,2,3,1,5] => [1,5,2,3,4] => [1,0,1,1,1,1,0,0,0,0] => 4
[1,1,1,1,0,0,0,0,1,0] => [4,3,2,1,5] => [1,5,2,3,4] => [1,0,1,1,1,1,0,0,0,0] => 4
[1,0,1,1,0,0,1,1,0,0,1,0] => [1,3,2,5,4,6] => [1,3,2,5,4,6] => [1,0,1,1,0,0,1,1,0,0,1,0] => 5
[1,0,1,1,0,0,1,1,1,0,0,0] => [1,3,2,6,5,4] => [1,3,2,6,4,5] => [1,0,1,1,0,0,1,1,1,0,0,0] => 5
[1,0,1,1,1,0,0,0,1,1,0,0] => [1,4,3,2,6,5] => [1,4,2,6,3,5] => [1,0,1,1,1,0,0,1,1,0,0,0] => 7
[1,0,1,1,1,0,0,1,0,0,1,0] => [1,4,3,5,2,6] => [1,4,2,6,3,5] => [1,0,1,1,1,0,0,1,1,0,0,0] => 7
[1,0,1,1,1,0,0,1,1,0,0,0] => [1,4,3,6,5,2] => [1,4,2,3,6,5] => [1,0,1,1,1,0,0,0,1,1,0,0] => 5
[1,0,1,1,1,0,1,0,0,0,1,0] => [1,5,3,4,2,6] => [1,5,2,6,3,4] => [1,0,1,1,1,1,0,0,1,0,0,0] => 7
[1,0,1,1,1,0,1,0,0,1,0,0] => [1,5,3,4,6,2] => [1,5,2,3,4,6] => [1,0,1,1,1,1,0,0,0,0,1,0] => 5
[1,0,1,1,1,0,1,0,1,0,0,0] => [1,6,3,4,5,2] => [1,6,2,3,4,5] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,0,1,1,1,0,1,1,0,0,0,0] => [1,6,3,5,4,2] => [1,6,2,3,5,4] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,0,1,1,1,1,0,0,0,0,1,0] => [1,5,4,3,2,6] => [1,5,2,6,3,4] => [1,0,1,1,1,1,0,0,1,0,0,0] => 7
[1,0,1,1,1,1,0,0,0,1,0,0] => [1,5,4,3,6,2] => [1,5,2,3,6,4] => [1,0,1,1,1,1,0,0,0,1,0,0] => 6
[1,0,1,1,1,1,0,0,1,0,0,0] => [1,6,4,3,5,2] => [1,6,2,3,5,4] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,0,1,1,1,1,0,1,0,0,0,0] => [1,6,4,5,3,2] => [1,6,2,3,4,5] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,0,1,1,1,1,1,0,0,0,0,0] => [1,6,5,4,3,2] => [1,6,2,3,4,5] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,0,0,1,1,0,0,1,1,0,0] => [2,1,4,3,6,5] => [1,4,2,3,6,5] => [1,0,1,1,1,0,0,0,1,1,0,0] => 5
[1,1,0,0,1,1,1,0,0,0,1,0] => [2,1,5,4,3,6] => [1,5,2,3,6,4] => [1,0,1,1,1,1,0,0,0,1,0,0] => 6
[1,1,0,0,1,1,1,0,0,1,0,0] => [2,1,5,4,6,3] => [1,5,2,3,4,6] => [1,0,1,1,1,1,0,0,0,0,1,0] => 5
[1,1,0,0,1,1,1,0,1,0,0,0] => [2,1,6,4,5,3] => [1,6,2,3,4,5] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,0,0,1,1,1,1,0,0,0,0] => [2,1,6,5,4,3] => [1,6,2,3,4,5] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,0,1,0,0,1,1,0,0,1,0] => [2,3,1,5,4,6] => [1,5,2,3,4,6] => [1,0,1,1,1,1,0,0,0,0,1,0] => 5
[1,1,0,1,0,0,1,1,1,0,0,0] => [2,3,1,6,5,4] => [1,6,2,3,4,5] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,0,1,0,1,0,0,1,1,0,0] => [2,3,4,1,6,5] => [1,6,2,3,4,5] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,0,1,0,1,0,1,0,0,1,0] => [2,3,4,5,1,6] => [1,6,2,3,4,5] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,0,1,0,1,1,0,0,0,1,0] => [2,3,5,4,1,6] => [1,6,2,3,5,4] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,0,1,1,0,0,0,1,1,0,0] => [2,4,3,1,6,5] => [1,6,2,4,3,5] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,0,1,1,0,0,1,0,0,1,0] => [2,4,3,5,1,6] => [1,6,2,4,3,5] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,0,1,1,0,1,0,0,0,1,0] => [2,5,3,4,1,6] => [1,6,2,5,3,4] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,0,1,1,1,0,0,0,0,1,0] => [2,5,4,3,1,6] => [1,6,2,5,3,4] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,1,0,0,0,1,1,0,0,1,0] => [3,2,1,5,4,6] => [1,5,2,3,4,6] => [1,0,1,1,1,1,0,0,0,0,1,0] => 5
[1,1,1,0,0,0,1,1,1,0,0,0] => [3,2,1,6,5,4] => [1,6,2,3,4,5] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,1,0,0,1,0,0,1,1,0,0] => [3,2,4,1,6,5] => [1,6,2,4,3,5] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,1,0,0,1,0,1,0,0,1,0] => [3,2,4,5,1,6] => [1,6,2,4,5,3] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,1,0,0,1,1,0,0,0,1,0] => [3,2,5,4,1,6] => [1,6,2,5,3,4] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,1,0,1,0,0,0,1,1,0,0] => [4,2,3,1,6,5] => [1,6,2,3,4,5] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,1,0,1,0,0,1,0,0,1,0] => [4,2,3,5,1,6] => [1,6,2,3,5,4] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,1,0,1,0,1,0,0,0,1,0] => [5,2,3,4,1,6] => [1,6,2,3,4,5] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,1,0,1,1,0,0,0,0,1,0] => [5,2,4,3,1,6] => [1,6,2,4,3,5] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,1,1,0,0,0,0,1,1,0,0] => [4,3,2,1,6,5] => [1,6,2,3,4,5] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,1,1,0,0,0,1,0,0,1,0] => [4,3,2,5,1,6] => [1,6,2,5,3,4] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,1,1,0,0,1,0,0,0,1,0] => [5,3,2,4,1,6] => [1,6,2,4,3,5] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,1,1,0,1,0,0,0,0,1,0] => [5,3,4,2,1,6] => [1,6,2,3,4,5] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,1,1,1,0,0,0,0,0,1,0] => [5,4,3,2,1,6] => [1,6,2,3,4,5] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,0,1,1,0,0,1,1,0,0,1,1,0,0] => [1,3,2,5,4,7,6] => [1,3,2,5,4,7,6] => [1,0,1,1,0,0,1,1,0,0,1,1,0,0] => 6
[1,0,1,1,0,0,1,1,1,0,0,0,1,0] => [1,3,2,6,5,4,7] => [1,3,2,6,4,7,5] => [1,0,1,1,0,0,1,1,1,0,0,1,0,0] => 7
[1,0,1,1,0,0,1,1,1,0,0,1,0,0] => [1,3,2,6,5,7,4] => [1,3,2,6,4,5,7] => [1,0,1,1,0,0,1,1,1,0,0,0,1,0] => 6
[1,0,1,1,0,0,1,1,1,0,1,0,0,0] => [1,3,2,7,5,6,4] => [1,3,2,7,4,5,6] => [1,0,1,1,0,0,1,1,1,1,0,0,0,0] => 6
[1,0,1,1,0,0,1,1,1,1,0,0,0,0] => [1,3,2,7,6,5,4] => [1,3,2,7,4,5,6] => [1,0,1,1,0,0,1,1,1,1,0,0,0,0] => 6
[1,0,1,1,1,0,0,0,1,1,0,0,1,0] => [1,4,3,2,6,5,7] => [1,4,2,6,3,5,7] => [1,0,1,1,1,0,0,1,1,0,0,0,1,0] => 8
[1,0,1,1,1,0,0,0,1,1,1,0,0,0] => [1,4,3,2,7,6,5] => [1,4,2,7,3,5,6] => [1,0,1,1,1,0,0,1,1,1,0,0,0,0] => 9
[1,0,1,1,1,0,0,1,0,0,1,1,0,0] => [1,4,3,5,2,7,6] => [1,4,2,7,3,5,6] => [1,0,1,1,1,0,0,1,1,1,0,0,0,0] => 9
[1,0,1,1,1,0,0,1,0,1,0,0,1,0] => [1,4,3,5,6,2,7] => [1,4,2,7,3,5,6] => [1,0,1,1,1,0,0,1,1,1,0,0,0,0] => 9
[1,0,1,1,1,0,0,1,1,0,0,0,1,0] => [1,4,3,6,5,2,7] => [1,4,2,7,3,6,5] => [1,0,1,1,1,0,0,1,1,1,0,0,0,0] => 9
[1,0,1,1,1,0,0,1,1,0,0,1,0,0] => [1,4,3,6,5,7,2] => [1,4,2,3,6,5,7] => [1,0,1,1,1,0,0,0,1,1,0,0,1,0] => 6
[1,0,1,1,1,0,0,1,1,0,1,0,0,0] => [1,4,3,7,5,6,2] => [1,4,2,3,7,5,6] => [1,0,1,1,1,0,0,0,1,1,1,0,0,0] => 6
[1,0,1,1,1,0,0,1,1,1,0,0,0,0] => [1,4,3,7,6,5,2] => [1,4,2,3,7,5,6] => [1,0,1,1,1,0,0,0,1,1,1,0,0,0] => 6
[1,0,1,1,1,0,1,0,0,0,1,1,0,0] => [1,5,3,4,2,7,6] => [1,5,2,7,3,4,6] => [1,0,1,1,1,1,0,0,1,1,0,0,0,0] => 10
[1,0,1,1,1,0,1,0,0,1,0,0,1,0] => [1,5,3,4,6,2,7] => [1,5,2,7,3,4,6] => [1,0,1,1,1,1,0,0,1,1,0,0,0,0] => 10
[1,0,1,1,1,0,1,0,0,1,1,0,0,0] => [1,5,3,4,7,6,2] => [1,5,2,3,4,7,6] => [1,0,1,1,1,1,0,0,0,0,1,1,0,0] => 6
[1,0,1,1,1,0,1,0,1,0,0,0,1,0] => [1,6,3,4,5,2,7] => [1,6,2,7,3,4,5] => [1,0,1,1,1,1,1,0,0,1,0,0,0,0] => 9
[1,0,1,1,1,0,1,0,1,0,0,1,0,0] => [1,6,3,4,5,7,2] => [1,6,2,3,4,5,7] => [1,0,1,1,1,1,1,0,0,0,0,0,1,0] => 6
[1,0,1,1,1,0,1,0,1,0,1,0,0,0] => [1,7,3,4,5,6,2] => [1,7,2,3,4,5,6] => [1,0,1,1,1,1,1,1,0,0,0,0,0,0] => 6
[1,0,1,1,1,0,1,0,1,1,0,0,0,0] => [1,7,3,4,6,5,2] => [1,7,2,3,4,6,5] => [1,0,1,1,1,1,1,1,0,0,0,0,0,0] => 6
[1,0,1,1,1,0,1,1,0,0,0,0,1,0] => [1,6,3,5,4,2,7] => [1,6,2,7,3,5,4] => [1,0,1,1,1,1,1,0,0,1,0,0,0,0] => 9
[1,0,1,1,1,0,1,1,0,0,0,1,0,0] => [1,6,3,5,4,7,2] => [1,6,2,3,5,4,7] => [1,0,1,1,1,1,1,0,0,0,0,0,1,0] => 6
[1,0,1,1,1,0,1,1,0,0,1,0,0,0] => [1,7,3,5,4,6,2] => [1,7,2,3,5,4,6] => [1,0,1,1,1,1,1,1,0,0,0,0,0,0] => 6
[1,0,1,1,1,0,1,1,0,1,0,0,0,0] => [1,7,3,5,6,4,2] => [1,7,2,3,5,6,4] => [1,0,1,1,1,1,1,1,0,0,0,0,0,0] => 6
[1,0,1,1,1,0,1,1,1,0,0,0,0,0] => [1,7,3,6,5,4,2] => [1,7,2,3,6,4,5] => [1,0,1,1,1,1,1,1,0,0,0,0,0,0] => 6
[1,0,1,1,1,1,0,0,0,0,1,1,0,0] => [1,5,4,3,2,7,6] => [1,5,2,7,3,4,6] => [1,0,1,1,1,1,0,0,1,1,0,0,0,0] => 10
[1,0,1,1,1,1,0,0,0,1,0,0,1,0] => [1,5,4,3,6,2,7] => [1,5,2,7,3,6,4] => [1,0,1,1,1,1,0,0,1,1,0,0,0,0] => 10
[1,0,1,1,1,1,0,0,0,1,1,0,0,0] => [1,5,4,3,7,6,2] => [1,5,2,3,7,4,6] => [1,0,1,1,1,1,0,0,0,1,1,0,0,0] => 8
[1,0,1,1,1,1,0,0,1,0,0,0,1,0] => [1,6,4,3,5,2,7] => [1,6,2,7,3,5,4] => [1,0,1,1,1,1,1,0,0,1,0,0,0,0] => 9
[1,0,1,1,1,1,0,0,1,0,0,1,0,0] => [1,6,4,3,5,7,2] => [1,6,2,3,5,7,4] => [1,0,1,1,1,1,1,0,0,0,0,1,0,0] => 7
[1,0,1,1,1,1,0,0,1,0,1,0,0,0] => [1,7,4,3,5,6,2] => [1,7,2,3,5,6,4] => [1,0,1,1,1,1,1,1,0,0,0,0,0,0] => 6
[1,0,1,1,1,1,0,0,1,1,0,0,0,0] => [1,7,4,3,6,5,2] => [1,7,2,3,6,4,5] => [1,0,1,1,1,1,1,1,0,0,0,0,0,0] => 6
[1,0,1,1,1,1,0,1,0,0,0,0,1,0] => [1,6,4,5,3,2,7] => [1,6,2,7,3,4,5] => [1,0,1,1,1,1,1,0,0,1,0,0,0,0] => 9
[1,0,1,1,1,1,0,1,0,0,0,1,0,0] => [1,6,4,5,3,7,2] => [1,6,2,3,7,4,5] => [1,0,1,1,1,1,1,0,0,0,1,0,0,0] => 8
[1,0,1,1,1,1,0,1,0,0,1,0,0,0] => [1,7,4,5,3,6,2] => [1,7,2,3,6,4,5] => [1,0,1,1,1,1,1,1,0,0,0,0,0,0] => 6
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Description
The number of indecomposable modules with projective dimension 2 for Nakayama algebras with global dimension at most 2.
Map
to non-crossing permutation
Description
Sends a Dyck path $D$ with valley at positions $\{(i_1,j_1),\ldots,(i_k,j_k)\}$ to the unique non-crossing permutation $\pi$ having descents $\{i_1,\ldots,i_k\}$ and whose inverse has descents $\{j_1,\ldots,j_k\}$.
It sends the area St000012The area of a Dyck path. to the number of inversions St000018The number of inversions of a permutation. and the major index St000027The major index of a Dyck path. to $n(n-1)$ minus the sum of the major index St000004The major index of a permutation. and the inverse major index St000305The inverse major index of a permutation..
It sends the area St000012The area of a Dyck path. to the number of inversions St000018The number of inversions of a permutation. and the major index St000027The major index of a Dyck path. to $n(n-1)$ minus the sum of the major index St000004The major index of a permutation. and the inverse major index St000305The inverse major index of a permutation..
Map
left-to-right-maxima to Dyck path
Description
The left-to-right maxima of a permutation as a Dyck path.
Let $(c_1, \dots, c_k)$ be the rise composition Mp00102rise composition of the path. Then the corresponding left-to-right maxima are $c_1, c_1+c_2, \dots, c_1+\dots+c_k$.
Restricted to 321-avoiding permutations, this is the inverse of Mp00119to 321-avoiding permutation (Krattenthaler), restricted to 312-avoiding permutations, this is the inverse of Mp00031to 312-avoiding permutation.
Let $(c_1, \dots, c_k)$ be the rise composition Mp00102rise composition of the path. Then the corresponding left-to-right maxima are $c_1, c_1+c_2, \dots, c_1+\dots+c_k$.
Restricted to 321-avoiding permutations, this is the inverse of Mp00119to 321-avoiding permutation (Krattenthaler), restricted to 312-avoiding permutations, this is the inverse of Mp00031to 312-avoiding permutation.
Map
runsort
Description
The permutation obtained by sorting the increasing runs lexicographically.
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