Identifier
-
Mp00119:
Dyck paths
—to 321-avoiding permutation (Krattenthaler)⟶
Permutations
Mp00073: Permutations —major-index to inversion-number bijection⟶ 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] => [2,1] => [1,1,0,0] => 0
[1,0,1,1,0,0] => [1,3,2] => [2,3,1] => [1,1,0,1,0,0] => 2
[1,1,0,0,1,0] => [2,1,3] => [2,1,3] => [1,1,0,0,1,0] => 1
[1,1,0,1,0,0] => [2,3,1] => [3,1,2] => [1,1,1,0,0,0] => 0
[1,1,1,0,0,0] => [3,1,2] => [1,3,2] => [1,0,1,1,0,0] => 2
[1,0,1,1,0,1,0,0] => [1,3,4,2] => [2,4,1,3] => [1,1,0,1,1,0,0,0] => 4
[1,0,1,1,1,0,0,0] => [1,4,2,3] => [2,1,4,3] => [1,1,0,0,1,1,0,0] => 2
[1,1,0,0,1,1,0,0] => [2,1,4,3] => [3,2,4,1] => [1,1,1,0,0,1,0,0] => 2
[1,1,0,1,0,0,1,0] => [2,3,1,4] => [3,1,2,4] => [1,1,1,0,0,0,1,0] => 1
[1,1,0,1,0,1,0,0] => [2,3,4,1] => [4,1,2,3] => [1,1,1,1,0,0,0,0] => 0
[1,1,1,0,0,0,1,0] => [3,1,2,4] => [1,3,2,4] => [1,0,1,1,0,0,1,0] => 3
[1,1,1,0,0,1,0,0] => [3,1,4,2] => [3,4,1,2] => [1,1,1,0,1,0,0,0] => 3
[1,1,1,0,1,0,0,0] => [3,4,1,2] => [1,4,2,3] => [1,0,1,1,1,0,0,0] => 3
[1,0,1,1,0,1,0,0,1,0] => [1,3,4,2,5] => [2,4,1,3,5] => [1,1,0,1,1,0,0,0,1,0] => 5
[1,0,1,1,0,1,0,1,0,0] => [1,3,4,5,2] => [2,5,1,3,4] => [1,1,0,1,1,1,0,0,0,0] => 6
[1,0,1,1,1,0,0,0,1,0] => [1,4,2,3,5] => [2,1,4,3,5] => [1,1,0,0,1,1,0,0,1,0] => 3
[1,0,1,1,1,0,1,0,0,0] => [1,4,5,2,3] => [2,1,5,3,4] => [1,1,0,0,1,1,1,0,0,0] => 3
[1,1,0,0,1,1,0,1,0,0] => [2,1,4,5,3] => [3,2,5,1,4] => [1,1,1,0,0,1,1,0,0,0] => 4
[1,1,0,0,1,1,1,0,0,0] => [2,1,5,3,4] => [3,2,1,5,4] => [1,1,1,0,0,0,1,1,0,0] => 2
[1,1,0,1,0,0,1,1,0,0] => [2,3,1,5,4] => [4,2,3,5,1] => [1,1,1,1,0,0,0,1,0,0] => 2
[1,1,0,1,0,1,0,0,1,0] => [2,3,4,1,5] => [4,1,2,3,5] => [1,1,1,1,0,0,0,0,1,0] => 1
[1,1,0,1,0,1,0,1,0,0] => [2,3,4,5,1] => [5,1,2,3,4] => [1,1,1,1,1,0,0,0,0,0] => 0
[1,1,0,1,1,0,0,1,0,0] => [2,4,1,5,3] => [4,2,5,1,3] => [1,1,1,1,0,0,1,0,0,0] => 3
[1,1,0,1,1,1,0,0,0,0] => [2,5,1,3,4] => [1,3,2,5,4] => [1,0,1,1,0,0,1,1,0,0] => 4
[1,1,1,0,0,1,0,1,0,0] => [3,1,4,5,2] => [3,5,1,2,4] => [1,1,1,0,1,1,0,0,0,0] => 6
[1,1,1,0,1,0,0,0,1,0] => [3,4,1,2,5] => [1,4,2,3,5] => [1,0,1,1,1,0,0,0,1,0] => 4
[1,1,1,0,1,0,0,1,0,0] => [3,4,1,5,2] => [4,5,1,2,3] => [1,1,1,1,0,1,0,0,0,0] => 4
[1,1,1,0,1,0,1,0,0,0] => [3,4,5,1,2] => [1,5,2,3,4] => [1,0,1,1,1,1,0,0,0,0] => 4
[1,1,1,1,0,0,1,0,0,0] => [4,1,5,2,3] => [3,1,5,2,4] => [1,1,1,0,0,1,1,0,0,0] => 4
[1,0,1,1,0,1,0,1,0,0,1,0] => [1,3,4,5,2,6] => [2,5,1,3,4,6] => [1,1,0,1,1,1,0,0,0,0,1,0] => 7
[1,0,1,1,0,1,0,1,0,1,0,0] => [1,3,4,5,6,2] => [2,6,1,3,4,5] => [1,1,0,1,1,1,1,0,0,0,0,0] => 8
[1,0,1,1,0,1,1,1,0,0,0,0] => [1,3,6,2,4,5] => [2,1,4,3,6,5] => [1,1,0,0,1,1,0,0,1,1,0,0] => 4
[1,0,1,1,1,0,1,0,0,0,1,0] => [1,4,5,2,3,6] => [2,1,5,3,4,6] => [1,1,0,0,1,1,1,0,0,0,1,0] => 4
[1,0,1,1,1,0,1,0,1,0,0,0] => [1,4,5,6,2,3] => [2,1,6,3,4,5] => [1,1,0,0,1,1,1,1,0,0,0,0] => 4
[1,1,0,0,1,1,0,1,0,0,1,0] => [2,1,4,5,3,6] => [3,2,5,1,4,6] => [1,1,1,0,0,1,1,0,0,0,1,0] => 5
[1,1,0,0,1,1,0,1,0,1,0,0] => [2,1,4,5,6,3] => [3,2,6,1,4,5] => [1,1,1,0,0,1,1,1,0,0,0,0] => 6
[1,1,0,0,1,1,1,0,0,0,1,0] => [2,1,5,3,4,6] => [3,2,1,5,4,6] => [1,1,1,0,0,0,1,1,0,0,1,0] => 3
[1,1,0,0,1,1,1,0,1,0,0,0] => [2,1,5,6,3,4] => [3,2,1,6,4,5] => [1,1,1,0,0,0,1,1,1,0,0,0] => 3
[1,1,0,1,0,0,1,1,0,1,0,0] => [2,3,1,5,6,4] => [4,2,3,6,1,5] => [1,1,1,1,0,0,0,1,1,0,0,0] => 4
[1,1,0,1,0,0,1,1,1,0,0,0] => [2,3,1,6,4,5] => [4,2,3,1,6,5] => [1,1,1,1,0,0,0,0,1,1,0,0] => 2
[1,1,0,1,0,1,0,0,1,1,0,0] => [2,3,4,1,6,5] => [5,2,3,4,6,1] => [1,1,1,1,1,0,0,0,0,1,0,0] => 2
[1,1,0,1,0,1,0,1,0,0,1,0] => [2,3,4,5,1,6] => [5,1,2,3,4,6] => [1,1,1,1,1,0,0,0,0,0,1,0] => 1
[1,1,0,1,0,1,0,1,0,1,0,0] => [2,3,4,5,6,1] => [6,1,2,3,4,5] => [1,1,1,1,1,1,0,0,0,0,0,0] => 0
[1,1,0,1,0,1,1,0,0,1,0,0] => [2,3,5,1,6,4] => [5,2,3,6,1,4] => [1,1,1,1,1,0,0,0,1,0,0,0] => 3
[1,1,0,1,1,0,0,1,0,1,0,0] => [2,4,1,5,6,3] => [4,2,6,1,3,5] => [1,1,1,1,0,0,1,1,0,0,0,0] => 6
[1,1,0,1,1,0,1,0,0,1,0,0] => [2,4,5,1,6,3] => [5,2,6,1,3,4] => [1,1,1,1,1,0,0,1,0,0,0,0] => 4
[1,1,0,1,1,1,0,0,0,0,1,0] => [2,5,1,3,4,6] => [1,3,2,5,4,6] => [1,0,1,1,0,0,1,1,0,0,1,0] => 5
[1,1,0,1,1,1,0,0,1,0,0,0] => [2,5,1,6,3,4] => [4,2,1,6,3,5] => [1,1,1,1,0,0,0,1,1,0,0,0] => 4
[1,1,0,1,1,1,0,1,0,0,0,0] => [2,5,6,1,3,4] => [1,3,2,6,4,5] => [1,0,1,1,0,0,1,1,1,0,0,0] => 5
[1,1,1,0,0,0,1,1,1,0,0,0] => [3,1,2,6,4,5] => [2,4,3,1,6,5] => [1,1,0,1,1,0,0,0,1,1,0,0] => 6
[1,1,1,0,0,1,0,1,0,0,1,0] => [3,1,4,5,2,6] => [3,5,1,2,4,6] => [1,1,1,0,1,1,0,0,0,0,1,0] => 7
[1,1,1,0,0,1,0,1,0,1,0,0] => [3,1,4,5,6,2] => [3,6,1,2,4,5] => [1,1,1,0,1,1,1,0,0,0,0,0] => 9
[1,1,1,0,1,0,0,0,1,1,0,0] => [3,4,1,2,6,5] => [2,5,3,4,6,1] => [1,1,0,1,1,1,0,0,0,1,0,0] => 8
[1,1,1,0,1,0,0,1,0,1,0,0] => [3,4,1,5,6,2] => [4,6,1,2,3,5] => [1,1,1,1,0,1,1,0,0,0,0,0] => 8
[1,1,1,0,1,0,1,0,0,0,1,0] => [3,4,5,1,2,6] => [1,5,2,3,4,6] => [1,0,1,1,1,1,0,0,0,0,1,0] => 5
[1,1,1,0,1,0,1,0,0,1,0,0] => [3,4,5,1,6,2] => [5,6,1,2,3,4] => [1,1,1,1,1,0,1,0,0,0,0,0] => 5
[1,1,1,0,1,0,1,0,1,0,0,0] => [3,4,5,6,1,2] => [1,6,2,3,4,5] => [1,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,1,0,1,1,0,0,1,0,0,0] => [3,5,1,6,2,4] => [4,1,3,6,2,5] => [1,1,1,1,0,0,0,1,1,0,0,0] => 4
[1,1,1,1,0,0,1,0,0,0,1,0] => [4,1,5,2,3,6] => [3,1,5,2,4,6] => [1,1,1,0,0,1,1,0,0,0,1,0] => 5
[1,1,1,1,0,0,1,0,1,0,0,0] => [4,1,5,6,2,3] => [3,1,6,2,4,5] => [1,1,1,0,0,1,1,1,0,0,0,0] => 6
[1,1,1,1,0,1,0,0,1,0,0,0] => [4,5,1,6,2,3] => [4,1,6,2,3,5] => [1,1,1,1,0,0,1,1,0,0,0,0] => 6
[1,1,1,1,1,0,0,1,0,0,0,0] => [5,1,6,2,3,4] => [3,1,2,6,4,5] => [1,1,1,0,0,0,1,1,1,0,0,0] => 3
[1,0,1,1,0,1,0,0,1,1,1,0,0,0] => [1,3,4,2,7,5,6] => [3,5,2,4,1,7,6] => [1,1,1,0,1,1,0,0,0,0,1,1,0,0] => 8
[1,0,1,1,0,1,0,1,0,0,1,1,0,0] => [1,3,4,5,2,7,6] => [3,6,2,4,5,7,1] => [1,1,1,0,1,1,1,0,0,0,0,1,0,0] => 11
[1,0,1,1,0,1,0,1,0,1,0,0,1,0] => [1,3,4,5,6,2,7] => [2,6,1,3,4,5,7] => [1,1,0,1,1,1,1,0,0,0,0,0,1,0] => 9
[1,0,1,1,0,1,0,1,0,1,0,1,0,0] => [1,3,4,5,6,7,2] => [2,7,1,3,4,5,6] => [1,1,0,1,1,1,1,1,0,0,0,0,0,0] => 10
[1,0,1,1,0,1,1,1,0,0,0,0,1,0] => [1,3,6,2,4,5,7] => [2,1,4,3,6,5,7] => [1,1,0,0,1,1,0,0,1,1,0,0,1,0] => 5
[1,0,1,1,0,1,1,1,0,1,0,0,0,0] => [1,3,6,7,2,4,5] => [2,1,4,3,7,5,6] => [1,1,0,0,1,1,0,0,1,1,1,0,0,0] => 5
[1,0,1,1,1,0,0,0,1,1,1,0,0,0] => [1,4,2,3,7,5,6] => [3,2,5,4,1,7,6] => [1,1,1,0,0,1,1,0,0,0,1,1,0,0] => 6
[1,0,1,1,1,0,1,0,0,0,1,1,0,0] => [1,4,5,2,3,7,6] => [3,2,6,4,5,7,1] => [1,1,1,0,0,1,1,1,0,0,0,1,0,0] => 8
[1,0,1,1,1,0,1,0,1,0,0,0,1,0] => [1,4,5,6,2,3,7] => [2,1,6,3,4,5,7] => [1,1,0,0,1,1,1,1,0,0,0,0,1,0] => 5
[1,0,1,1,1,0,1,0,1,0,1,0,0,0] => [1,4,5,6,7,2,3] => [2,1,7,3,4,5,6] => [1,1,0,0,1,1,1,1,1,0,0,0,0,0] => 5
[1,1,0,0,1,1,0,1,0,1,0,0,1,0] => [2,1,4,5,6,3,7] => [3,2,6,1,4,5,7] => [1,1,1,0,0,1,1,1,0,0,0,0,1,0] => 7
[1,1,0,0,1,1,0,1,0,1,0,1,0,0] => [2,1,4,5,6,7,3] => [3,2,7,1,4,5,6] => [1,1,1,0,0,1,1,1,1,0,0,0,0,0] => 8
[1,1,0,0,1,1,0,1,1,1,0,0,0,0] => [2,1,4,7,3,5,6] => [3,2,1,5,4,7,6] => [1,1,1,0,0,0,1,1,0,0,1,1,0,0] => 4
[1,1,0,0,1,1,1,0,1,0,0,0,1,0] => [2,1,5,6,3,4,7] => [3,2,1,6,4,5,7] => [1,1,1,0,0,0,1,1,1,0,0,0,1,0] => 4
[1,1,0,0,1,1,1,0,1,0,1,0,0,0] => [2,1,5,6,7,3,4] => [3,2,1,7,4,5,6] => [1,1,1,0,0,0,1,1,1,1,0,0,0,0] => 4
[1,1,0,1,0,0,1,1,0,1,0,0,1,0] => [2,3,1,5,6,4,7] => [4,2,3,6,1,5,7] => [1,1,1,1,0,0,0,1,1,0,0,0,1,0] => 5
[1,1,0,1,0,0,1,1,0,1,0,1,0,0] => [2,3,1,5,6,7,4] => [4,2,3,7,1,5,6] => [1,1,1,1,0,0,0,1,1,1,0,0,0,0] => 6
[1,1,0,1,0,0,1,1,1,0,0,0,1,0] => [2,3,1,6,4,5,7] => [4,2,3,1,6,5,7] => [1,1,1,1,0,0,0,0,1,1,0,0,1,0] => 3
[1,1,0,1,0,0,1,1,1,0,1,0,0,0] => [2,3,1,6,7,4,5] => [4,2,3,1,7,5,6] => [1,1,1,1,0,0,0,0,1,1,1,0,0,0] => 3
[1,1,0,1,0,1,0,0,1,1,0,1,0,0] => [2,3,4,1,6,7,5] => [5,2,3,4,7,1,6] => [1,1,1,1,1,0,0,0,0,1,1,0,0,0] => 4
[1,1,0,1,0,1,0,0,1,1,1,0,0,0] => [2,3,4,1,7,5,6] => [5,2,3,4,1,7,6] => [1,1,1,1,1,0,0,0,0,0,1,1,0,0] => 2
[1,1,0,1,0,1,0,1,0,0,1,1,0,0] => [2,3,4,5,1,7,6] => [6,2,3,4,5,7,1] => [1,1,1,1,1,1,0,0,0,0,0,1,0,0] => 2
[1,1,0,1,0,1,0,1,0,1,0,0,1,0] => [2,3,4,5,6,1,7] => [6,1,2,3,4,5,7] => [1,1,1,1,1,1,0,0,0,0,0,0,1,0] => 1
[1,1,0,1,0,1,0,1,0,1,0,1,0,0] => [2,3,4,5,6,7,1] => [7,1,2,3,4,5,6] => [1,1,1,1,1,1,1,0,0,0,0,0,0,0] => 0
[1,1,0,1,0,1,0,1,1,0,0,1,0,0] => [2,3,4,6,1,7,5] => [6,2,3,4,7,1,5] => [1,1,1,1,1,1,0,0,0,0,1,0,0,0] => 3
[1,1,0,1,0,1,1,0,0,1,0,1,0,0] => [2,3,5,1,6,7,4] => [5,2,3,7,1,4,6] => [1,1,1,1,1,0,0,0,1,1,0,0,0,0] => 6
[1,1,0,1,0,1,1,0,1,0,0,1,0,0] => [2,3,5,6,1,7,4] => [6,2,3,7,1,4,5] => [1,1,1,1,1,1,0,0,0,1,0,0,0,0] => 4
[1,1,0,1,0,1,1,1,0,0,1,0,0,0] => [2,3,6,1,7,4,5] => [5,2,3,1,7,4,6] => [1,1,1,1,1,0,0,0,0,1,1,0,0,0] => 4
[1,1,0,1,1,0,0,1,0,1,0,0,1,0] => [2,4,1,5,6,3,7] => [4,2,6,1,3,5,7] => [1,1,1,1,0,0,1,1,0,0,0,0,1,0] => 7
[1,1,0,1,1,0,0,1,0,1,0,1,0,0] => [2,4,1,5,6,7,3] => [4,2,7,1,3,5,6] => [1,1,1,1,0,0,1,1,1,0,0,0,0,0] => 9
[1,1,0,1,1,0,1,0,0,1,0,1,0,0] => [2,4,5,1,6,7,3] => [5,2,7,1,3,4,6] => [1,1,1,1,1,0,0,1,1,0,0,0,0,0] => 8
[1,1,0,1,1,0,1,0,1,0,0,1,0,0] => [2,4,5,6,1,7,3] => [6,2,7,1,3,4,5] => [1,1,1,1,1,1,0,0,1,0,0,0,0,0] => 5
[1,1,0,1,1,0,1,1,0,0,1,0,0,0] => [2,4,6,1,7,3,5] => [5,2,1,4,7,3,6] => [1,1,1,1,1,0,0,0,0,1,1,0,0,0] => 4
[1,1,0,1,1,0,1,1,1,0,0,0,0,0] => [2,4,7,1,3,5,6] => [1,3,2,5,4,7,6] => [1,0,1,1,0,0,1,1,0,0,1,1,0,0] => 6
[1,1,0,1,1,1,0,0,1,0,0,0,1,0] => [2,5,1,6,3,4,7] => [4,2,1,6,3,5,7] => [1,1,1,1,0,0,0,1,1,0,0,0,1,0] => 5
[1,1,0,1,1,1,0,0,1,0,1,0,0,0] => [2,5,1,6,7,3,4] => [4,2,1,7,3,5,6] => [1,1,1,1,0,0,0,1,1,1,0,0,0,0] => 6
[1,1,0,1,1,1,0,1,0,0,0,0,1,0] => [2,5,6,1,3,4,7] => [1,3,2,6,4,5,7] => [1,0,1,1,0,0,1,1,1,0,0,0,1,0] => 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
major-index to inversion-number bijection
Description
Return the permutation whose Lehmer code equals the major code of the preimage.
This map sends the major index to the number of inversions.
This map sends the major index to the number of inversions.
Map
to 321-avoiding permutation (Krattenthaler)
Description
Krattenthaler's bijection to 321-avoiding permutations.
Draw the path of semilength $n$ in an $n\times n$ square matrix, starting at the upper left corner, with right and down steps, and staying below the diagonal. Then the permutation matrix is obtained by placing ones into the cells corresponding to the peaks of the path and placing ones into the remaining columns from left to right, such that the row indices of the cells increase.
Draw the path of semilength $n$ in an $n\times n$ square matrix, starting at the upper left corner, with right and down steps, and staying below the diagonal. Then the permutation matrix is obtained by placing ones into the cells corresponding to the peaks of the path and placing ones into the remaining columns from left to right, such that the row indices of the cells increase.
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.
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