Identifier
-
Mp00201:
Dyck paths
—Ringel⟶
Permutations
Mp00066: Permutations —inverse⟶ Permutations
Mp00240: Permutations —weak exceedance partition⟶ Set partitions
St000504: Set partitions ⟶ ℤ
Values
[1,0] => [2,1] => [2,1] => {{1,2}} => 2
[1,0,1,0] => [3,1,2] => [2,3,1] => {{1,2,3}} => 3
[1,1,0,0] => [2,3,1] => [3,1,2] => {{1,3},{2}} => 2
[1,0,1,0,1,0] => [4,1,2,3] => [2,3,4,1] => {{1,2,3,4}} => 4
[1,0,1,1,0,0] => [3,1,4,2] => [2,4,1,3] => {{1,2,4},{3}} => 3
[1,1,0,0,1,0] => [2,4,1,3] => [3,1,4,2] => {{1,3,4},{2}} => 3
[1,1,0,1,0,0] => [4,3,1,2] => [3,4,2,1] => {{1,3},{2,4}} => 2
[1,1,1,0,0,0] => [2,3,4,1] => [4,1,2,3] => {{1,4},{2},{3}} => 2
[1,0,1,0,1,0,1,0] => [5,1,2,3,4] => [2,3,4,5,1] => {{1,2,3,4,5}} => 5
[1,0,1,0,1,1,0,0] => [4,1,2,5,3] => [2,3,5,1,4] => {{1,2,3,5},{4}} => 4
[1,0,1,1,0,0,1,0] => [3,1,5,2,4] => [2,4,1,5,3] => {{1,2,4,5},{3}} => 4
[1,0,1,1,0,1,0,0] => [5,1,4,2,3] => [2,4,5,3,1] => {{1,2,4},{3,5}} => 3
[1,0,1,1,1,0,0,0] => [3,1,4,5,2] => [2,5,1,3,4] => {{1,2,5},{3},{4}} => 3
[1,1,0,0,1,0,1,0] => [2,5,1,3,4] => [3,1,4,5,2] => {{1,3,4,5},{2}} => 4
[1,1,0,0,1,1,0,0] => [2,4,1,5,3] => [3,1,5,2,4] => {{1,3,5},{2},{4}} => 3
[1,1,0,1,0,0,1,0] => [5,3,1,2,4] => [3,4,2,5,1] => {{1,3},{2,4,5}} => 2
[1,1,0,1,0,1,0,0] => [5,4,1,2,3] => [3,4,5,2,1] => {{1,3,5},{2,4}} => 3
[1,1,0,1,1,0,0,0] => [4,3,1,5,2] => [3,5,2,1,4] => {{1,3},{2,5},{4}} => 2
[1,1,1,0,0,0,1,0] => [2,3,5,1,4] => [4,1,2,5,3] => {{1,4,5},{2},{3}} => 3
[1,1,1,0,0,1,0,0] => [2,5,4,1,3] => [4,1,5,3,2] => {{1,4},{2},{3,5}} => 2
[1,1,1,0,1,0,0,0] => [5,3,4,1,2] => [4,5,2,3,1] => {{1,4},{2,5},{3}} => 2
[1,1,1,1,0,0,0,0] => [2,3,4,5,1] => [5,1,2,3,4] => {{1,5},{2},{3},{4}} => 2
[1,0,1,0,1,0,1,0,1,0] => [6,1,2,3,4,5] => [2,3,4,5,6,1] => {{1,2,3,4,5,6}} => 6
[1,0,1,0,1,0,1,1,0,0] => [5,1,2,3,6,4] => [2,3,4,6,1,5] => {{1,2,3,4,6},{5}} => 5
[1,0,1,0,1,1,0,0,1,0] => [4,1,2,6,3,5] => [2,3,5,1,6,4] => {{1,2,3,5,6},{4}} => 5
[1,0,1,0,1,1,0,1,0,0] => [6,1,2,5,3,4] => [2,3,5,6,4,1] => {{1,2,3,5},{4,6}} => 4
[1,0,1,0,1,1,1,0,0,0] => [4,1,2,5,6,3] => [2,3,6,1,4,5] => {{1,2,3,6},{4},{5}} => 4
[1,0,1,1,0,0,1,0,1,0] => [3,1,6,2,4,5] => [2,4,1,5,6,3] => {{1,2,4,5,6},{3}} => 5
[1,0,1,1,0,0,1,1,0,0] => [3,1,5,2,6,4] => [2,4,1,6,3,5] => {{1,2,4,6},{3},{5}} => 4
[1,0,1,1,0,1,0,0,1,0] => [6,1,4,2,3,5] => [2,4,5,3,6,1] => {{1,2,4},{3,5,6}} => 3
[1,0,1,1,0,1,0,1,0,0] => [6,1,5,2,3,4] => [2,4,5,6,3,1] => {{1,2,4,6},{3,5}} => 4
[1,0,1,1,0,1,1,0,0,0] => [5,1,4,2,6,3] => [2,4,6,3,1,5] => {{1,2,4},{3,6},{5}} => 3
[1,0,1,1,1,0,0,0,1,0] => [3,1,4,6,2,5] => [2,5,1,3,6,4] => {{1,2,5,6},{3},{4}} => 4
[1,0,1,1,1,0,0,1,0,0] => [3,1,6,5,2,4] => [2,5,1,6,4,3] => {{1,2,5},{3},{4,6}} => 3
[1,0,1,1,1,0,1,0,0,0] => [6,1,4,5,2,3] => [2,5,6,3,4,1] => {{1,2,5},{3,6},{4}} => 3
[1,0,1,1,1,1,0,0,0,0] => [3,1,4,5,6,2] => [2,6,1,3,4,5] => {{1,2,6},{3},{4},{5}} => 3
[1,1,0,0,1,0,1,0,1,0] => [2,6,1,3,4,5] => [3,1,4,5,6,2] => {{1,3,4,5,6},{2}} => 5
[1,1,0,0,1,0,1,1,0,0] => [2,5,1,3,6,4] => [3,1,4,6,2,5] => {{1,3,4,6},{2},{5}} => 4
[1,1,0,0,1,1,0,0,1,0] => [2,4,1,6,3,5] => [3,1,5,2,6,4] => {{1,3,5,6},{2},{4}} => 4
[1,1,0,0,1,1,0,1,0,0] => [2,6,1,5,3,4] => [3,1,5,6,4,2] => {{1,3,5},{2},{4,6}} => 3
[1,1,0,0,1,1,1,0,0,0] => [2,4,1,5,6,3] => [3,1,6,2,4,5] => {{1,3,6},{2},{4},{5}} => 3
[1,1,0,1,0,0,1,0,1,0] => [6,3,1,2,4,5] => [3,4,2,5,6,1] => {{1,3},{2,4,5,6}} => 2
[1,1,0,1,0,0,1,1,0,0] => [5,3,1,2,6,4] => [3,4,2,6,1,5] => {{1,3},{2,4,6},{5}} => 2
[1,1,0,1,0,1,0,0,1,0] => [6,4,1,2,3,5] => [3,4,5,2,6,1] => {{1,3,5,6},{2,4}} => 4
[1,1,0,1,0,1,0,1,0,0] => [5,6,1,2,3,4] => [3,4,5,6,1,2] => {{1,3,5},{2,4,6}} => 3
[1,1,0,1,0,1,1,0,0,0] => [5,4,1,2,6,3] => [3,4,6,2,1,5] => {{1,3,6},{2,4},{5}} => 3
[1,1,0,1,1,0,0,0,1,0] => [4,3,1,6,2,5] => [3,5,2,1,6,4] => {{1,3},{2,5,6},{4}} => 2
[1,1,0,1,1,0,0,1,0,0] => [6,3,1,5,2,4] => [3,5,2,6,4,1] => {{1,3},{2,5},{4,6}} => 2
[1,1,0,1,1,0,1,0,0,0] => [6,4,1,5,2,3] => [3,5,6,2,4,1] => {{1,3,6},{2,5},{4}} => 3
[1,1,0,1,1,1,0,0,0,0] => [4,3,1,5,6,2] => [3,6,2,1,4,5] => {{1,3},{2,6},{4},{5}} => 2
[1,1,1,0,0,0,1,0,1,0] => [2,3,6,1,4,5] => [4,1,2,5,6,3] => {{1,4,5,6},{2},{3}} => 4
[1,1,1,0,0,0,1,1,0,0] => [2,3,5,1,6,4] => [4,1,2,6,3,5] => {{1,4,6},{2},{3},{5}} => 3
[1,1,1,0,0,1,0,0,1,0] => [2,6,4,1,3,5] => [4,1,5,3,6,2] => {{1,4},{2},{3,5,6}} => 2
[1,1,1,0,0,1,0,1,0,0] => [2,6,5,1,3,4] => [4,1,5,6,3,2] => {{1,4,6},{2},{3,5}} => 3
[1,1,1,0,0,1,1,0,0,0] => [2,5,4,1,6,3] => [4,1,6,3,2,5] => {{1,4},{2},{3,6},{5}} => 2
[1,1,1,0,1,0,0,0,1,0] => [6,3,4,1,2,5] => [4,5,2,3,6,1] => {{1,4},{2,5,6},{3}} => 2
[1,1,1,0,1,0,0,1,0,0] => [6,3,5,1,2,4] => [4,5,2,6,3,1] => {{1,4,6},{2,5},{3}} => 3
[1,1,1,0,1,0,1,0,0,0] => [6,5,4,1,2,3] => [4,5,6,3,2,1] => {{1,4},{2,5},{3,6}} => 2
[1,1,1,0,1,1,0,0,0,0] => [5,3,4,1,6,2] => [4,6,2,3,1,5] => {{1,4},{2,6},{3},{5}} => 2
[1,1,1,1,0,0,0,0,1,0] => [2,3,4,6,1,5] => [5,1,2,3,6,4] => {{1,5,6},{2},{3},{4}} => 3
[1,1,1,1,0,0,0,1,0,0] => [2,3,6,5,1,4] => [5,1,2,6,4,3] => {{1,5},{2},{3},{4,6}} => 2
[1,1,1,1,0,0,1,0,0,0] => [2,6,4,5,1,3] => [5,1,6,3,4,2] => {{1,5},{2},{3,6},{4}} => 2
[1,1,1,1,0,1,0,0,0,0] => [6,3,4,5,1,2] => [5,6,2,3,4,1] => {{1,5},{2,6},{3},{4}} => 2
[1,1,1,1,1,0,0,0,0,0] => [2,3,4,5,6,1] => [6,1,2,3,4,5] => {{1,6},{2},{3},{4},{5}} => 2
[1,0,1,0,1,0,1,0,1,0,1,0] => [7,1,2,3,4,5,6] => [2,3,4,5,6,7,1] => {{1,2,3,4,5,6,7}} => 7
[1,0,1,0,1,0,1,0,1,1,0,0] => [6,1,2,3,4,7,5] => [2,3,4,5,7,1,6] => {{1,2,3,4,5,7},{6}} => 6
[1,0,1,0,1,0,1,1,0,0,1,0] => [5,1,2,3,7,4,6] => [2,3,4,6,1,7,5] => {{1,2,3,4,6,7},{5}} => 6
[1,0,1,0,1,0,1,1,0,1,0,0] => [7,1,2,3,6,4,5] => [2,3,4,6,7,5,1] => {{1,2,3,4,6},{5,7}} => 5
[1,0,1,0,1,0,1,1,1,0,0,0] => [5,1,2,3,6,7,4] => [2,3,4,7,1,5,6] => {{1,2,3,4,7},{5},{6}} => 5
[1,0,1,0,1,1,0,0,1,0,1,0] => [4,1,2,7,3,5,6] => [2,3,5,1,6,7,4] => {{1,2,3,5,6,7},{4}} => 6
[1,0,1,0,1,1,0,0,1,1,0,0] => [4,1,2,6,3,7,5] => [2,3,5,1,7,4,6] => {{1,2,3,5,7},{4},{6}} => 5
[1,0,1,0,1,1,0,1,0,0,1,0] => [7,1,2,5,3,4,6] => [2,3,5,6,4,7,1] => {{1,2,3,5},{4,6,7}} => 4
[1,0,1,0,1,1,0,1,0,1,0,0] => [7,1,2,6,3,4,5] => [2,3,5,6,7,4,1] => {{1,2,3,5,7},{4,6}} => 5
[1,0,1,0,1,1,0,1,1,0,0,0] => [6,1,2,5,3,7,4] => [2,3,5,7,4,1,6] => {{1,2,3,5},{4,7},{6}} => 4
[1,0,1,0,1,1,1,0,0,0,1,0] => [4,1,2,5,7,3,6] => [2,3,6,1,4,7,5] => {{1,2,3,6,7},{4},{5}} => 5
[1,0,1,0,1,1,1,0,0,1,0,0] => [4,1,2,7,6,3,5] => [2,3,6,1,7,5,4] => {{1,2,3,6},{4},{5,7}} => 4
[1,0,1,0,1,1,1,0,1,0,0,0] => [7,1,2,5,6,3,4] => [2,3,6,7,4,5,1] => {{1,2,3,6},{4,7},{5}} => 4
[1,0,1,0,1,1,1,1,0,0,0,0] => [4,1,2,5,6,7,3] => [2,3,7,1,4,5,6] => {{1,2,3,7},{4},{5},{6}} => 4
[1,0,1,1,0,0,1,0,1,0,1,0] => [3,1,7,2,4,5,6] => [2,4,1,5,6,7,3] => {{1,2,4,5,6,7},{3}} => 6
[1,0,1,1,0,0,1,0,1,1,0,0] => [3,1,6,2,4,7,5] => [2,4,1,5,7,3,6] => {{1,2,4,5,7},{3},{6}} => 5
[1,0,1,1,0,0,1,1,0,0,1,0] => [3,1,5,2,7,4,6] => [2,4,1,6,3,7,5] => {{1,2,4,6,7},{3},{5}} => 5
[1,0,1,1,0,0,1,1,0,1,0,0] => [3,1,7,2,6,4,5] => [2,4,1,6,7,5,3] => {{1,2,4,6},{3},{5,7}} => 4
[1,0,1,1,0,0,1,1,1,0,0,0] => [3,1,5,2,6,7,4] => [2,4,1,7,3,5,6] => {{1,2,4,7},{3},{5},{6}} => 4
[1,0,1,1,0,1,0,0,1,0,1,0] => [7,1,4,2,3,5,6] => [2,4,5,3,6,7,1] => {{1,2,4},{3,5,6,7}} => 3
[1,0,1,1,0,1,0,0,1,1,0,0] => [6,1,4,2,3,7,5] => [2,4,5,3,7,1,6] => {{1,2,4},{3,5,7},{6}} => 3
[1,0,1,1,0,1,0,1,0,0,1,0] => [7,1,5,2,3,4,6] => [2,4,5,6,3,7,1] => {{1,2,4,6,7},{3,5}} => 5
[1,0,1,1,0,1,0,1,0,1,0,0] => [6,1,7,2,3,4,5] => [2,4,5,6,7,1,3] => {{1,2,4,6},{3,5,7}} => 4
[1,0,1,1,0,1,0,1,1,0,0,0] => [6,1,5,2,3,7,4] => [2,4,5,7,3,1,6] => {{1,2,4,7},{3,5},{6}} => 4
[1,0,1,1,0,1,1,0,0,0,1,0] => [5,1,4,2,7,3,6] => [2,4,6,3,1,7,5] => {{1,2,4},{3,6,7},{5}} => 3
[1,0,1,1,0,1,1,0,0,1,0,0] => [7,1,4,2,6,3,5] => [2,4,6,3,7,5,1] => {{1,2,4},{3,6},{5,7}} => 3
[1,0,1,1,0,1,1,0,1,0,0,0] => [7,1,5,2,6,3,4] => [2,4,6,7,3,5,1] => {{1,2,4,7},{3,6},{5}} => 4
[1,0,1,1,0,1,1,1,0,0,0,0] => [5,1,4,2,6,7,3] => [2,4,7,3,1,5,6] => {{1,2,4},{3,7},{5},{6}} => 3
[1,0,1,1,1,0,0,0,1,0,1,0] => [3,1,4,7,2,5,6] => [2,5,1,3,6,7,4] => {{1,2,5,6,7},{3},{4}} => 5
[1,0,1,1,1,0,0,0,1,1,0,0] => [3,1,4,6,2,7,5] => [2,5,1,3,7,4,6] => {{1,2,5,7},{3},{4},{6}} => 4
[1,0,1,1,1,0,0,1,0,0,1,0] => [3,1,7,5,2,4,6] => [2,5,1,6,4,7,3] => {{1,2,5},{3},{4,6,7}} => 3
[1,0,1,1,1,0,0,1,0,1,0,0] => [3,1,7,6,2,4,5] => [2,5,1,6,7,4,3] => {{1,2,5,7},{3},{4,6}} => 4
[1,0,1,1,1,0,0,1,1,0,0,0] => [3,1,6,5,2,7,4] => [2,5,1,7,4,3,6] => {{1,2,5},{3},{4,7},{6}} => 3
[1,0,1,1,1,0,1,0,0,0,1,0] => [7,1,4,5,2,3,6] => [2,5,6,3,4,7,1] => {{1,2,5},{3,6,7},{4}} => 3
[1,0,1,1,1,0,1,0,0,1,0,0] => [7,1,4,6,2,3,5] => [2,5,6,3,7,4,1] => {{1,2,5,7},{3,6},{4}} => 4
[1,0,1,1,1,0,1,0,1,0,0,0] => [7,1,6,5,2,3,4] => [2,5,6,7,4,3,1] => {{1,2,5},{3,6},{4,7}} => 3
[1,0,1,1,1,0,1,1,0,0,0,0] => [6,1,4,5,2,7,3] => [2,5,7,3,4,1,6] => {{1,2,5},{3,7},{4},{6}} => 3
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Description
The cardinality of the first block of a set partition.
The number of partitions of {1,…,n} into k blocks in which the first block has cardinality j+1 is given by \binom{n-1}{j}S(n-j-1,k-1), see [1, Theorem 1.1] and the references therein. Here, S(n,k) are the Stirling numbers of the second kind counting all set partitions of \{1,\ldots,n\} into k blocks [2].
The number of partitions of {1,…,n} into k blocks in which the first block has cardinality j+1 is given by \binom{n-1}{j}S(n-j-1,k-1), see [1, Theorem 1.1] and the references therein. Here, S(n,k) are the Stirling numbers of the second kind counting all set partitions of \{1,\ldots,n\} into k blocks [2].
Map
inverse
Description
Sends a permutation to its inverse.
Map
Ringel
Description
The Ringel permutation of the LNakayama algebra corresponding to a Dyck path.
Map
weak exceedance partition
Description
The set partition induced by the weak exceedances of a permutation.
This is the coarsest set partition that contains all arcs (i, \pi(i)) with i\leq\pi(i).
This is the coarsest set partition that contains all arcs (i, \pi(i)) with i\leq\pi(i).
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