Identifier
-
Mp00080:
Set partitions
—to permutation⟶
Permutations
Mp00087: Permutations —inverse first fundamental transformation⟶ Permutations
Mp00073: Permutations —major-index to inversion-number bijection⟶ Permutations
St000989: Permutations ⟶ ℤ
Values
{{1,2}} => [2,1] => [2,1] => [2,1] => 0
{{1},{2}} => [1,2] => [1,2] => [1,2] => 1
{{1,2,3}} => [2,3,1] => [3,1,2] => [1,3,2] => 0
{{1,2},{3}} => [2,1,3] => [2,1,3] => [2,1,3] => 1
{{1,3},{2}} => [3,2,1] => [2,3,1] => [3,1,2] => 1
{{1},{2,3}} => [1,3,2] => [1,3,2] => [2,3,1] => 0
{{1},{2},{3}} => [1,2,3] => [1,2,3] => [1,2,3] => 2
{{1,2,3,4}} => [2,3,4,1] => [4,1,2,3] => [1,2,4,3] => 0
{{1,2,3},{4}} => [2,3,1,4] => [3,1,2,4] => [1,3,2,4] => 1
{{1,2,4},{3}} => [2,4,3,1] => [3,4,1,2] => [1,4,2,3] => 1
{{1,2},{3,4}} => [2,1,4,3] => [2,1,4,3] => [3,2,4,1] => 0
{{1,2},{3},{4}} => [2,1,3,4] => [2,1,3,4] => [2,1,3,4] => 2
{{1,3,4},{2}} => [3,2,4,1] => [2,4,1,3] => [1,3,4,2] => 0
{{1,3},{2,4}} => [3,4,1,2] => [3,1,4,2] => [3,4,1,2] => 1
{{1,3},{2},{4}} => [3,2,1,4] => [2,3,1,4] => [3,1,2,4] => 2
{{1,4},{2,3}} => [4,3,2,1] => [3,2,4,1] => [4,2,1,3] => 1
{{1},{2,3,4}} => [1,3,4,2] => [1,4,2,3] => [2,1,4,3] => 0
{{1},{2,3},{4}} => [1,3,2,4] => [1,3,2,4] => [2,3,1,4] => 1
{{1,4},{2},{3}} => [4,2,3,1] => [2,3,4,1] => [4,1,2,3] => 2
{{1},{2,4},{3}} => [1,4,3,2] => [1,3,4,2] => [2,4,1,3] => 1
{{1},{2},{3,4}} => [1,2,4,3] => [1,2,4,3] => [2,3,4,1] => 0
{{1},{2},{3},{4}} => [1,2,3,4] => [1,2,3,4] => [1,2,3,4] => 3
{{1,2,3,4,5}} => [2,3,4,5,1] => [5,1,2,3,4] => [1,2,3,5,4] => 0
{{1,2,3,4},{5}} => [2,3,4,1,5] => [4,1,2,3,5] => [1,2,4,3,5] => 1
{{1,2,3,5},{4}} => [2,3,5,4,1] => [4,5,1,2,3] => [1,2,5,3,4] => 1
{{1,2,3},{4,5}} => [2,3,1,5,4] => [3,1,2,5,4] => [2,4,3,5,1] => 0
{{1,2,3},{4},{5}} => [2,3,1,4,5] => [3,1,2,4,5] => [1,3,2,4,5] => 2
{{1,2,4,5},{3}} => [2,4,3,5,1] => [3,5,1,2,4] => [1,2,4,5,3] => 0
{{1,2,4},{3,5}} => [2,4,5,1,3] => [4,1,2,5,3] => [2,4,5,1,3] => 1
{{1,2,4},{3},{5}} => [2,4,3,1,5] => [3,4,1,2,5] => [1,4,2,3,5] => 2
{{1,2,5},{3,4}} => [2,5,4,3,1] => [4,3,5,1,2] => [1,5,3,2,4] => 1
{{1,2},{3,4,5}} => [2,1,4,5,3] => [2,1,5,3,4] => [3,2,1,5,4] => 0
{{1,2},{3,4},{5}} => [2,1,4,3,5] => [2,1,4,3,5] => [3,2,4,1,5] => 1
{{1,2,5},{3},{4}} => [2,5,3,4,1] => [3,4,5,1,2] => [1,5,2,3,4] => 2
{{1,2},{3,5},{4}} => [2,1,5,4,3] => [2,1,4,5,3] => [3,2,5,1,4] => 1
{{1,2},{3},{4,5}} => [2,1,3,5,4] => [2,1,3,5,4] => [3,2,4,5,1] => 0
{{1,2},{3},{4},{5}} => [2,1,3,4,5] => [2,1,3,4,5] => [2,1,3,4,5] => 3
{{1,3,4,5},{2}} => [3,2,4,5,1] => [2,5,1,3,4] => [1,3,2,5,4] => 0
{{1,3,4},{2,5}} => [3,5,4,1,2] => [4,1,3,5,2] => [2,5,3,1,4] => 1
{{1,3,4},{2},{5}} => [3,2,4,1,5] => [2,4,1,3,5] => [1,3,4,2,5] => 1
{{1,3,5},{2,4}} => [3,4,5,2,1] => [4,2,5,1,3] => [1,4,5,2,3] => 1
{{1,3},{2,4,5}} => [3,4,1,5,2] => [3,1,5,2,4] => [3,1,4,5,2] => 0
{{1,3},{2,4},{5}} => [3,4,1,2,5] => [3,1,4,2,5] => [3,4,1,2,5] => 2
{{1,3,5},{2},{4}} => [3,2,5,4,1] => [2,4,5,1,3] => [1,3,5,2,4] => 1
{{1,3},{2,5},{4}} => [3,5,1,4,2] => [3,1,4,5,2] => [3,5,1,2,4] => 2
{{1,3},{2},{4,5}} => [3,2,1,5,4] => [2,3,1,5,4] => [4,2,3,5,1] => 0
{{1,3},{2},{4},{5}} => [3,2,1,4,5] => [2,3,1,4,5] => [3,1,2,4,5] => 3
{{1,4,5},{2,3}} => [4,3,2,5,1] => [3,2,5,1,4] => [1,4,3,5,2] => 0
{{1,4},{2,3,5}} => [4,3,5,1,2] => [4,1,5,2,3] => [3,1,5,2,4] => 1
{{1,4},{2,3},{5}} => [4,3,2,1,5] => [3,2,4,1,5] => [4,2,1,3,5] => 2
{{1,5},{2,3,4}} => [5,3,4,2,1] => [4,2,3,5,1] => [5,1,3,2,4] => 1
{{1},{2,3,4,5}} => [1,3,4,5,2] => [1,5,2,3,4] => [2,1,3,5,4] => 0
{{1},{2,3,4},{5}} => [1,3,4,2,5] => [1,4,2,3,5] => [2,1,4,3,5] => 1
{{1,5},{2,3},{4}} => [5,3,2,4,1] => [3,2,4,5,1] => [5,2,1,3,4] => 2
{{1},{2,3,5},{4}} => [1,3,5,4,2] => [1,4,5,2,3] => [2,1,5,3,4] => 1
{{1},{2,3},{4,5}} => [1,3,2,5,4] => [1,3,2,5,4] => [3,4,2,5,1] => 0
{{1},{2,3},{4},{5}} => [1,3,2,4,5] => [1,3,2,4,5] => [2,3,1,4,5] => 2
{{1,4,5},{2},{3}} => [4,2,3,5,1] => [2,3,5,1,4] => [1,3,4,5,2] => 0
{{1,4},{2,5},{3}} => [4,5,3,1,2] => [3,4,1,5,2] => [4,5,1,2,3] => 2
{{1,4},{2},{3,5}} => [4,2,5,1,3] => [2,4,1,5,3] => [4,2,5,1,3] => 1
{{1,4},{2},{3},{5}} => [4,2,3,1,5] => [2,3,4,1,5] => [4,1,2,3,5] => 3
{{1,5},{2,4},{3}} => [5,4,3,2,1] => [3,4,2,5,1] => [5,3,1,2,4] => 2
{{1},{2,4,5},{3}} => [1,4,3,5,2] => [1,3,5,2,4] => [2,1,4,5,3] => 0
{{1},{2,4},{3,5}} => [1,4,5,2,3] => [1,4,2,5,3] => [3,4,5,1,2] => 1
{{1},{2,4},{3},{5}} => [1,4,3,2,5] => [1,3,4,2,5] => [2,4,1,3,5] => 2
{{1,5},{2},{3,4}} => [5,2,4,3,1] => [2,4,3,5,1] => [5,2,3,1,4] => 1
{{1},{2,5},{3,4}} => [1,5,4,3,2] => [1,4,3,5,2] => [3,5,2,1,4] => 1
{{1},{2},{3,4,5}} => [1,2,4,5,3] => [1,2,5,3,4] => [2,3,1,5,4] => 0
{{1},{2},{3,4},{5}} => [1,2,4,3,5] => [1,2,4,3,5] => [2,3,4,1,5] => 1
{{1,5},{2},{3},{4}} => [5,2,3,4,1] => [2,3,4,5,1] => [5,1,2,3,4] => 3
{{1},{2,5},{3},{4}} => [1,5,3,4,2] => [1,3,4,5,2] => [2,5,1,3,4] => 2
{{1},{2},{3,5},{4}} => [1,2,5,4,3] => [1,2,4,5,3] => [2,3,5,1,4] => 1
{{1},{2},{3},{4,5}} => [1,2,3,5,4] => [1,2,3,5,4] => [2,3,4,5,1] => 0
{{1},{2},{3},{4},{5}} => [1,2,3,4,5] => [1,2,3,4,5] => [1,2,3,4,5] => 4
{{1,2,3,4,5,6}} => [2,3,4,5,6,1] => [6,1,2,3,4,5] => [1,2,3,4,6,5] => 0
{{1,2,3,4,5},{6}} => [2,3,4,5,1,6] => [5,1,2,3,4,6] => [1,2,3,5,4,6] => 1
{{1,2,3,4,6},{5}} => [2,3,4,6,5,1] => [5,6,1,2,3,4] => [1,2,3,6,4,5] => 1
{{1,2,3,4},{5,6}} => [2,3,4,1,6,5] => [4,1,2,3,6,5] => [2,3,5,4,6,1] => 0
{{1,2,3,4},{5},{6}} => [2,3,4,1,5,6] => [4,1,2,3,5,6] => [1,2,4,3,5,6] => 2
{{1,2,3,5,6},{4}} => [2,3,5,4,6,1] => [4,6,1,2,3,5] => [1,2,3,5,6,4] => 0
{{1,2,3,5},{4,6}} => [2,3,5,6,1,4] => [5,1,2,3,6,4] => [2,3,5,6,1,4] => 1
{{1,2,3,5},{4},{6}} => [2,3,5,4,1,6] => [4,5,1,2,3,6] => [1,2,5,3,4,6] => 2
{{1,2,3,6},{4,5}} => [2,3,6,5,4,1] => [5,4,6,1,2,3] => [1,2,6,4,3,5] => 1
{{1,2,3},{4,5,6}} => [2,3,1,5,6,4] => [3,1,2,6,4,5] => [2,4,3,1,6,5] => 0
{{1,2,3},{4,5},{6}} => [2,3,1,5,4,6] => [3,1,2,5,4,6] => [2,4,3,5,1,6] => 1
{{1,2,3,6},{4},{5}} => [2,3,6,4,5,1] => [4,5,6,1,2,3] => [1,2,6,3,4,5] => 2
{{1,2,3},{4,6},{5}} => [2,3,1,6,5,4] => [3,1,2,5,6,4] => [2,4,3,6,1,5] => 1
{{1,2,3},{4},{5,6}} => [2,3,1,4,6,5] => [3,1,2,4,6,5] => [2,4,3,5,6,1] => 0
{{1,2,3},{4},{5},{6}} => [2,3,1,4,5,6] => [3,1,2,4,5,6] => [1,3,2,4,5,6] => 3
{{1,2,4,5,6},{3}} => [2,4,3,5,6,1] => [3,6,1,2,4,5] => [1,2,4,3,6,5] => 0
{{1,2,4,5},{3,6}} => [2,4,6,5,1,3] => [5,1,2,4,6,3] => [2,3,6,4,1,5] => 1
{{1,2,4,5},{3},{6}} => [2,4,3,5,1,6] => [3,5,1,2,4,6] => [1,2,4,5,3,6] => 1
{{1,2,4,6},{3,5}} => [2,4,5,6,3,1] => [5,3,6,1,2,4] => [1,2,5,6,3,4] => 1
{{1,2,4},{3,5,6}} => [2,4,5,1,6,3] => [4,1,2,6,3,5] => [2,4,1,5,6,3] => 0
{{1,2,4},{3,5},{6}} => [2,4,5,1,3,6] => [4,1,2,5,3,6] => [2,4,5,1,3,6] => 2
{{1,2,4,6},{3},{5}} => [2,4,3,6,5,1] => [3,5,6,1,2,4] => [1,2,4,6,3,5] => 1
{{1,2,4},{3,6},{5}} => [2,4,6,1,5,3] => [4,1,2,5,6,3] => [2,4,6,1,3,5] => 2
{{1,2,4},{3},{5,6}} => [2,4,3,1,6,5] => [3,4,1,2,6,5] => [2,5,3,4,6,1] => 0
{{1,2,4},{3},{5},{6}} => [2,4,3,1,5,6] => [3,4,1,2,5,6] => [1,4,2,3,5,6] => 3
{{1,2,5,6},{3,4}} => [2,5,4,3,6,1] => [4,3,6,1,2,5] => [1,2,5,4,6,3] => 0
{{1,2,5},{3,4,6}} => [2,5,4,6,1,3] => [5,1,2,6,3,4] => [2,4,1,6,3,5] => 1
>>> Load all 423 entries. <<<
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
Description
The number of final rises of a permutation.
For a permutation $\pi$ of length $n$, this is the maximal $k$ such that
$$\pi(n-k) \leq \pi(n-k+1) \leq \cdots \leq \pi(n-1) \leq \pi(n).$$
Equivalently, this is $n-1$ minus the position of the last descent St000653The last descent of a permutation..
For a permutation $\pi$ of length $n$, this is the maximal $k$ such that
$$\pi(n-k) \leq \pi(n-k+1) \leq \cdots \leq \pi(n-1) \leq \pi(n).$$
Equivalently, this is $n-1$ minus the position of the last descent St000653The last descent of a permutation..
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 permutation
Description
Sends the set partition to the permutation obtained by considering the blocks as increasing cycles.
Map
inverse first fundamental transformation
Description
Let $\sigma = (i_{11}\cdots i_{1k_1})\cdots(i_{\ell 1}\cdots i_{\ell k_\ell})$ be a permutation given by cycle notation such that every cycle starts with its maximal entry, and all cycles are ordered increasingly by these maximal entries.
Maps $\sigma$ to the permutation $[i_{11},\ldots,i_{1k_1},\ldots,i_{\ell 1},\ldots,i_{\ell k_\ell}]$ in one-line notation.
In other words, this map sends the maximal entries of the cycles to the left-to-right maxima, and the sequences between two left-to-right maxima are given by the cycles.
Maps $\sigma$ to the permutation $[i_{11},\ldots,i_{1k_1},\ldots,i_{\ell 1},\ldots,i_{\ell k_\ell}]$ in one-line notation.
In other words, this map sends the maximal entries of the cycles to the left-to-right maxima, and the sequences between two left-to-right maxima are given by the cycles.
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!