Identifier
-
Mp00233:
Dyck paths
—skew partition⟶
Skew partitions
Mp00183: Skew partitions —inner shape⟶ Integer partitions
Mp00043: Integer partitions —to Dyck path⟶ Dyck paths
St001232: Dyck paths ⟶ ℤ
Values
[1,1,0,0,1,0] => [[2,2],[1]] => [1] => [1,0,1,0] => 1
[1,0,1,1,0,0,1,0] => [[2,2,1],[1]] => [1] => [1,0,1,0] => 1
[1,1,0,0,1,0,1,0] => [[2,2,2],[1,1]] => [1,1] => [1,0,1,1,0,0] => 2
[1,1,0,0,1,1,0,0] => [[3,2],[1]] => [1] => [1,0,1,0] => 1
[1,1,0,1,0,0,1,0] => [[3,3],[2]] => [2] => [1,1,0,0,1,0] => 1
[1,1,0,1,1,0,0,0] => [[3,3],[1]] => [1] => [1,0,1,0] => 1
[1,1,1,0,0,0,1,0] => [[2,2,2],[1]] => [1] => [1,0,1,0] => 1
[1,0,1,0,1,1,0,0,1,0] => [[2,2,1,1],[1]] => [1] => [1,0,1,0] => 1
[1,0,1,1,0,0,1,0,1,0] => [[2,2,2,1],[1,1]] => [1,1] => [1,0,1,1,0,0] => 2
[1,0,1,1,0,0,1,1,0,0] => [[3,2,1],[1]] => [1] => [1,0,1,0] => 1
[1,0,1,1,0,1,0,0,1,0] => [[3,3,1],[2]] => [2] => [1,1,0,0,1,0] => 1
[1,0,1,1,0,1,1,0,0,0] => [[3,3,1],[1]] => [1] => [1,0,1,0] => 1
[1,0,1,1,1,0,0,0,1,0] => [[2,2,2,1],[1]] => [1] => [1,0,1,0] => 1
[1,1,0,0,1,0,1,0,1,0] => [[2,2,2,2],[1,1,1]] => [1,1,1] => [1,0,1,1,1,0,0,0] => 3
[1,1,0,0,1,0,1,1,0,0] => [[3,2,2],[1,1]] => [1,1] => [1,0,1,1,0,0] => 2
[1,1,0,0,1,1,0,1,0,0] => [[4,2],[1]] => [1] => [1,0,1,0] => 1
[1,1,0,0,1,1,1,0,0,0] => [[3,3,2],[1,1]] => [1,1] => [1,0,1,1,0,0] => 2
[1,1,0,1,0,0,1,0,1,0] => [[3,3,3],[2,2]] => [2,2] => [1,1,0,0,1,1,0,0] => 2
[1,1,0,1,0,0,1,1,0,0] => [[4,3],[2]] => [2] => [1,1,0,0,1,0] => 1
[1,1,0,1,0,1,0,0,1,0] => [[4,4],[3]] => [3] => [1,1,1,0,0,0,1,0] => 1
[1,1,0,1,0,1,1,0,0,0] => [[4,4],[2]] => [2] => [1,1,0,0,1,0] => 1
[1,1,0,1,1,0,0,1,0,0] => [[4,3],[1]] => [1] => [1,0,1,0] => 1
[1,1,0,1,1,0,1,0,0,0] => [[3,3,3],[1,1]] => [1,1] => [1,0,1,1,0,0] => 2
[1,1,0,1,1,1,0,0,0,0] => [[4,4],[1]] => [1] => [1,0,1,0] => 1
[1,1,1,0,0,0,1,0,1,0] => [[2,2,2,2],[1,1]] => [1,1] => [1,0,1,1,0,0] => 2
[1,1,1,0,0,0,1,1,0,0] => [[3,2,2],[1]] => [1] => [1,0,1,0] => 1
[1,1,1,0,0,1,0,0,1,0] => [[3,3,2],[2]] => [2] => [1,1,0,0,1,0] => 1
[1,1,1,0,0,1,1,0,0,0] => [[3,3,2],[1]] => [1] => [1,0,1,0] => 1
[1,1,1,0,1,0,0,0,1,0] => [[2,2,2,2],[1]] => [1] => [1,0,1,0] => 1
[1,1,1,1,0,0,0,0,1,0] => [[3,3,3],[2]] => [2] => [1,1,0,0,1,0] => 1
[1,1,1,1,0,0,1,0,0,0] => [[3,3,3],[1]] => [1] => [1,0,1,0] => 1
[1,0,1,0,1,0,1,1,0,0,1,0] => [[2,2,1,1,1],[1]] => [1] => [1,0,1,0] => 1
[1,0,1,0,1,1,0,0,1,0,1,0] => [[2,2,2,1,1],[1,1]] => [1,1] => [1,0,1,1,0,0] => 2
[1,0,1,0,1,1,0,0,1,1,0,0] => [[3,2,1,1],[1]] => [1] => [1,0,1,0] => 1
[1,0,1,0,1,1,0,1,0,0,1,0] => [[3,3,1,1],[2]] => [2] => [1,1,0,0,1,0] => 1
[1,0,1,0,1,1,0,1,1,0,0,0] => [[3,3,1,1],[1]] => [1] => [1,0,1,0] => 1
[1,0,1,0,1,1,1,0,0,0,1,0] => [[2,2,2,1,1],[1]] => [1] => [1,0,1,0] => 1
[1,0,1,1,0,0,1,0,1,0,1,0] => [[2,2,2,2,1],[1,1,1]] => [1,1,1] => [1,0,1,1,1,0,0,0] => 3
[1,0,1,1,0,0,1,0,1,1,0,0] => [[3,2,2,1],[1,1]] => [1,1] => [1,0,1,1,0,0] => 2
[1,0,1,1,0,0,1,1,0,1,0,0] => [[4,2,1],[1]] => [1] => [1,0,1,0] => 1
[1,0,1,1,0,0,1,1,1,0,0,0] => [[3,3,2,1],[1,1]] => [1,1] => [1,0,1,1,0,0] => 2
[1,0,1,1,0,1,0,0,1,0,1,0] => [[3,3,3,1],[2,2]] => [2,2] => [1,1,0,0,1,1,0,0] => 2
[1,0,1,1,0,1,0,0,1,1,0,0] => [[4,3,1],[2]] => [2] => [1,1,0,0,1,0] => 1
[1,0,1,1,0,1,0,1,0,0,1,0] => [[4,4,1],[3]] => [3] => [1,1,1,0,0,0,1,0] => 1
[1,0,1,1,0,1,0,1,1,0,0,0] => [[4,4,1],[2]] => [2] => [1,1,0,0,1,0] => 1
[1,0,1,1,0,1,1,0,0,1,0,0] => [[4,3,1],[1]] => [1] => [1,0,1,0] => 1
[1,0,1,1,0,1,1,0,1,0,0,0] => [[3,3,3,1],[1,1]] => [1,1] => [1,0,1,1,0,0] => 2
[1,0,1,1,0,1,1,1,0,0,0,0] => [[4,4,1],[1]] => [1] => [1,0,1,0] => 1
[1,0,1,1,1,0,0,0,1,0,1,0] => [[2,2,2,2,1],[1,1]] => [1,1] => [1,0,1,1,0,0] => 2
[1,0,1,1,1,0,0,0,1,1,0,0] => [[3,2,2,1],[1]] => [1] => [1,0,1,0] => 1
[1,0,1,1,1,0,0,1,0,0,1,0] => [[3,3,2,1],[2]] => [2] => [1,1,0,0,1,0] => 1
[1,0,1,1,1,0,0,1,1,0,0,0] => [[3,3,2,1],[1]] => [1] => [1,0,1,0] => 1
[1,0,1,1,1,0,1,0,0,0,1,0] => [[2,2,2,2,1],[1]] => [1] => [1,0,1,0] => 1
[1,0,1,1,1,1,0,0,0,0,1,0] => [[3,3,3,1],[2]] => [2] => [1,1,0,0,1,0] => 1
[1,0,1,1,1,1,0,0,1,0,0,0] => [[3,3,3,1],[1]] => [1] => [1,0,1,0] => 1
[1,1,0,0,1,0,1,0,1,0,1,0] => [[2,2,2,2,2],[1,1,1,1]] => [1,1,1,1] => [1,0,1,1,1,1,0,0,0,0] => 4
[1,1,0,0,1,0,1,0,1,1,0,0] => [[3,2,2,2],[1,1,1]] => [1,1,1] => [1,0,1,1,1,0,0,0] => 3
[1,1,0,0,1,0,1,1,0,1,0,0] => [[4,2,2],[1,1]] => [1,1] => [1,0,1,1,0,0] => 2
[1,1,0,0,1,0,1,1,1,0,0,0] => [[3,3,2,2],[1,1,1]] => [1,1,1] => [1,0,1,1,1,0,0,0] => 3
[1,1,0,0,1,1,0,1,0,1,0,0] => [[5,2],[1]] => [1] => [1,0,1,0] => 1
[1,1,0,0,1,1,1,0,0,1,0,0] => [[4,3,2],[1,1]] => [1,1] => [1,0,1,1,0,0] => 2
[1,1,0,0,1,1,1,0,1,0,0,0] => [[3,3,3,2],[1,1,1]] => [1,1,1] => [1,0,1,1,1,0,0,0] => 3
[1,1,0,0,1,1,1,1,0,0,0,0] => [[4,4,2],[1,1]] => [1,1] => [1,0,1,1,0,0] => 2
[1,1,0,1,0,0,1,0,1,0,1,0] => [[3,3,3,3],[2,2,2]] => [2,2,2] => [1,1,0,0,1,1,1,0,0,0] => 3
[1,1,0,1,0,0,1,0,1,1,0,0] => [[4,3,3],[2,2]] => [2,2] => [1,1,0,0,1,1,0,0] => 2
[1,1,0,1,0,0,1,1,0,1,0,0] => [[5,3],[2]] => [2] => [1,1,0,0,1,0] => 1
[1,1,0,1,0,0,1,1,1,0,0,0] => [[4,4,3],[2,2]] => [2,2] => [1,1,0,0,1,1,0,0] => 2
[1,1,0,1,0,1,0,0,1,0,1,0] => [[4,4,4],[3,3]] => [3,3] => [1,1,1,0,0,0,1,1,0,0] => 2
[1,1,0,1,0,1,0,0,1,1,0,0] => [[5,4],[3]] => [3] => [1,1,1,0,0,0,1,0] => 1
[1,1,0,1,0,1,0,1,0,0,1,0] => [[5,5],[4]] => [4] => [1,1,1,1,0,0,0,0,1,0] => 1
[1,1,0,1,0,1,0,1,1,0,0,0] => [[5,5],[3]] => [3] => [1,1,1,0,0,0,1,0] => 1
[1,1,0,1,0,1,1,0,0,1,0,0] => [[5,4],[2]] => [2] => [1,1,0,0,1,0] => 1
[1,1,0,1,0,1,1,0,1,0,0,0] => [[4,4,4],[2,2]] => [2,2] => [1,1,0,0,1,1,0,0] => 2
[1,1,0,1,0,1,1,1,0,0,0,0] => [[5,5],[2]] => [2] => [1,1,0,0,1,0] => 1
[1,1,0,1,1,0,0,1,0,1,0,0] => [[5,3],[1]] => [1] => [1,0,1,0] => 1
[1,1,0,1,1,0,1,0,0,1,0,0] => [[4,3,3],[1,1]] => [1,1] => [1,0,1,1,0,0] => 2
[1,1,0,1,1,0,1,0,1,0,0,0] => [[3,3,3,3],[1,1,1]] => [1,1,1] => [1,0,1,1,1,0,0,0] => 3
[1,1,0,1,1,0,1,1,0,0,0,0] => [[4,4,3],[1,1]] => [1,1] => [1,0,1,1,0,0] => 2
[1,1,0,1,1,1,0,0,0,1,0,0] => [[5,4],[1]] => [1] => [1,0,1,0] => 1
[1,1,0,1,1,1,0,1,0,0,0,0] => [[5,5],[1]] => [1] => [1,0,1,0] => 1
[1,1,0,1,1,1,1,0,0,0,0,0] => [[4,4,4],[1,1]] => [1,1] => [1,0,1,1,0,0] => 2
[1,1,1,0,0,0,1,0,1,0,1,0] => [[2,2,2,2,2],[1,1,1]] => [1,1,1] => [1,0,1,1,1,0,0,0] => 3
[1,1,1,0,0,0,1,0,1,1,0,0] => [[3,2,2,2],[1,1]] => [1,1] => [1,0,1,1,0,0] => 2
[1,1,1,0,0,0,1,1,0,1,0,0] => [[4,2,2],[1]] => [1] => [1,0,1,0] => 1
[1,1,1,0,0,0,1,1,1,0,0,0] => [[3,3,2,2],[1,1]] => [1,1] => [1,0,1,1,0,0] => 2
[1,1,1,0,0,1,0,0,1,0,1,0] => [[3,3,3,2],[2,2]] => [2,2] => [1,1,0,0,1,1,0,0] => 2
[1,1,1,0,0,1,0,0,1,1,0,0] => [[4,3,2],[2]] => [2] => [1,1,0,0,1,0] => 1
[1,1,1,0,0,1,0,1,0,0,1,0] => [[4,4,2],[3]] => [3] => [1,1,1,0,0,0,1,0] => 1
[1,1,1,0,0,1,0,1,1,0,0,0] => [[4,4,2],[2]] => [2] => [1,1,0,0,1,0] => 1
[1,1,1,0,0,1,1,0,0,1,0,0] => [[4,3,2],[1]] => [1] => [1,0,1,0] => 1
[1,1,1,0,0,1,1,0,1,0,0,0] => [[3,3,3,2],[1,1]] => [1,1] => [1,0,1,1,0,0] => 2
[1,1,1,0,0,1,1,1,0,0,0,0] => [[4,4,2],[1]] => [1] => [1,0,1,0] => 1
[1,1,1,0,1,0,0,0,1,0,1,0] => [[2,2,2,2,2],[1,1]] => [1,1] => [1,0,1,1,0,0] => 2
[1,1,1,0,1,0,0,0,1,1,0,0] => [[3,2,2,2],[1]] => [1] => [1,0,1,0] => 1
[1,1,1,0,1,0,0,1,0,0,1,0] => [[3,3,2,2],[2]] => [2] => [1,1,0,0,1,0] => 1
[1,1,1,0,1,0,0,1,1,0,0,0] => [[3,3,2,2],[1]] => [1] => [1,0,1,0] => 1
[1,1,1,0,1,0,1,0,0,0,1,0] => [[2,2,2,2,2],[1]] => [1] => [1,0,1,0] => 1
[1,1,1,0,1,1,0,0,0,0,1,0] => [[3,3,3,2],[2]] => [2] => [1,1,0,0,1,0] => 1
[1,1,1,0,1,1,0,0,1,0,0,0] => [[3,3,3,2],[1]] => [1] => [1,0,1,0] => 1
[1,1,1,1,0,0,0,0,1,0,1,0] => [[3,3,3,3],[2,2]] => [2,2] => [1,1,0,0,1,1,0,0] => 2
[1,1,1,1,0,0,0,0,1,1,0,0] => [[4,3,3],[2]] => [2] => [1,1,0,0,1,0] => 1
>>> Load all 307 entries. <<<
search for individual values
searching the database for the individual values of this statistic
Description
The number of indecomposable modules with projective dimension 2 for Nakayama algebras with global dimension at most 2.
Map
inner shape
Description
The inner shape of a skew partition.
Map
to Dyck path
Description
Sends a partition to the shortest Dyck path tracing the shape of its Ferrers diagram.
Map
skew partition
Description
The parallelogram polyomino corresponding to a Dyck path, interpreted as a skew partition.
Let $D$ be a Dyck path of semilength $n$. The parallelogram polyomino $\gamma(D)$ is defined as follows: let $\tilde D = d_0 d_1 \dots d_{2n+1}$ be the Dyck path obtained by prepending an up step and appending a down step to $D$. Then, the upper path of $\gamma(D)$ corresponds to the sequence of steps of $\tilde D$ with even indices, and the lower path of $\gamma(D)$ corresponds to the sequence of steps of $\tilde D$ with odd indices.
This map returns the skew partition definded by the diagram of $\gamma(D)$.
Let $D$ be a Dyck path of semilength $n$. The parallelogram polyomino $\gamma(D)$ is defined as follows: let $\tilde D = d_0 d_1 \dots d_{2n+1}$ be the Dyck path obtained by prepending an up step and appending a down step to $D$. Then, the upper path of $\gamma(D)$ corresponds to the sequence of steps of $\tilde D$ with even indices, and the lower path of $\gamma(D)$ corresponds to the sequence of steps of $\tilde D$ with odd indices.
This map returns the skew partition definded by the diagram of $\gamma(D)$.
searching the database
Sorry, this statistic was not found in the database
or
add this statistic to the database – it's very simple and we need your support!