Identifier
Values
[1,0] => [2,1] => [1,2] => [1,2] => 0
[1,0,1,0] => [3,1,2] => [1,3,2] => [1,3,2] => 0
[1,1,0,0] => [2,3,1] => [1,2,3] => [1,2,3] => 0
[1,0,1,0,1,0] => [4,1,2,3] => [1,4,3,2] => [1,3,4,2] => 0
[1,0,1,1,0,0] => [3,1,4,2] => [1,3,4,2] => [1,4,2,3] => 1
[1,1,0,0,1,0] => [2,4,1,3] => [1,2,4,3] => [1,2,4,3] => 0
[1,1,0,1,0,0] => [4,3,1,2] => [1,4,2,3] => [1,4,3,2] => 0
[1,1,1,0,0,0] => [2,3,4,1] => [1,2,3,4] => [1,2,3,4] => 0
[1,0,1,0,1,0,1,0] => [5,1,2,3,4] => [1,5,4,3,2] => [1,4,3,5,2] => 0
[1,0,1,0,1,1,0,0] => [4,1,2,5,3] => [1,4,5,3,2] => [1,5,2,4,3] => 1
[1,0,1,1,0,0,1,0] => [3,1,5,2,4] => [1,3,5,4,2] => [1,4,5,2,3] => 0
[1,0,1,1,0,1,0,0] => [5,1,4,2,3] => [1,5,3,4,2] => [1,3,4,5,2] => 0
[1,0,1,1,1,0,0,0] => [3,1,4,5,2] => [1,3,4,5,2] => [1,5,2,3,4] => 2
[1,1,0,0,1,0,1,0] => [2,5,1,3,4] => [1,2,5,4,3] => [1,2,4,5,3] => 0
[1,1,0,0,1,1,0,0] => [2,4,1,5,3] => [1,2,4,5,3] => [1,2,5,3,4] => 1
[1,1,0,1,0,0,1,0] => [5,3,1,2,4] => [1,5,4,2,3] => [1,5,3,4,2] => 0
[1,1,0,1,0,1,0,0] => [5,4,1,2,3] => [1,5,3,2,4] => [1,3,5,4,2] => 0
[1,1,0,1,1,0,0,0] => [4,3,1,5,2] => [1,4,5,2,3] => [1,4,2,5,3] => 1
[1,1,1,0,0,0,1,0] => [2,3,5,1,4] => [1,2,3,5,4] => [1,2,3,5,4] => 0
[1,1,1,0,0,1,0,0] => [2,5,4,1,3] => [1,2,5,3,4] => [1,2,5,4,3] => 0
[1,1,1,0,1,0,0,0] => [5,3,4,1,2] => [1,5,2,3,4] => [1,5,4,3,2] => 0
[1,1,1,1,0,0,0,0] => [2,3,4,5,1] => [1,2,3,4,5] => [1,2,3,4,5] => 0
[1,0,1,0,1,0,1,0,1,0] => [6,1,2,3,4,5] => [1,6,5,4,3,2] => [1,4,5,3,6,2] => 1
[1,0,1,0,1,0,1,1,0,0] => [5,1,2,3,6,4] => [1,5,6,4,3,2] => [1,4,6,2,5,3] => 0
[1,0,1,0,1,1,0,0,1,0] => [4,1,2,6,3,5] => [1,4,6,5,3,2] => [1,6,2,4,5,3] => 1
[1,0,1,0,1,1,0,1,0,0] => [6,1,2,5,3,4] => [1,6,4,5,3,2] => [1,5,3,4,6,2] => 0
[1,0,1,0,1,1,1,0,0,0] => [4,1,2,5,6,3] => [1,4,5,6,3,2] => [1,5,3,6,2,4] => 0
[1,0,1,1,0,0,1,0,1,0] => [3,1,6,2,4,5] => [1,3,6,5,4,2] => [1,5,4,6,2,3] => 0
[1,0,1,1,0,0,1,1,0,0] => [3,1,5,2,6,4] => [1,3,5,6,4,2] => [1,6,2,3,5,4] => 2
[1,0,1,1,0,1,0,0,1,0] => [6,1,4,2,3,5] => [1,6,5,3,4,2] => [1,5,4,3,6,2] => 0
[1,0,1,1,0,1,0,1,0,0] => [6,1,5,2,3,4] => [1,6,4,2,3,5] => [1,6,5,3,4,2] => 1
[1,0,1,1,0,1,1,0,0,0] => [5,1,4,2,6,3] => [1,5,6,3,4,2] => [1,6,2,5,4,3] => 1
[1,0,1,1,1,0,0,0,1,0] => [3,1,4,6,2,5] => [1,3,4,6,5,2] => [1,5,6,2,3,4] => 2
[1,0,1,1,1,0,0,1,0,0] => [3,1,6,5,2,4] => [1,3,6,4,5,2] => [1,4,5,6,2,3] => 1
[1,0,1,1,1,0,1,0,0,0] => [6,1,4,5,2,3] => [1,6,3,4,5,2] => [1,3,4,5,6,2] => 0
[1,0,1,1,1,1,0,0,0,0] => [3,1,4,5,6,2] => [1,3,4,5,6,2] => [1,6,2,3,4,5] => 3
[1,1,0,0,1,0,1,0,1,0] => [2,6,1,3,4,5] => [1,2,6,5,4,3] => [1,2,5,4,6,3] => 0
[1,1,0,0,1,0,1,1,0,0] => [2,5,1,3,6,4] => [1,2,5,6,4,3] => [1,2,6,3,5,4] => 1
[1,1,0,0,1,1,0,0,1,0] => [2,4,1,6,3,5] => [1,2,4,6,5,3] => [1,2,5,6,3,4] => 0
[1,1,0,0,1,1,0,1,0,0] => [2,6,1,5,3,4] => [1,2,6,4,5,3] => [1,2,4,5,6,3] => 0
[1,1,0,0,1,1,1,0,0,0] => [2,4,1,5,6,3] => [1,2,4,5,6,3] => [1,2,6,3,4,5] => 2
[1,1,0,1,0,0,1,0,1,0] => [6,3,1,2,4,5] => [1,6,5,4,2,3] => [1,4,6,3,5,2] => 1
[1,1,0,1,0,0,1,1,0,0] => [5,3,1,2,6,4] => [1,5,6,4,2,3] => [1,4,5,2,6,3] => 0
[1,1,0,1,0,1,0,0,1,0] => [6,4,1,2,3,5] => [1,6,5,3,2,4] => [1,6,4,3,5,2] => 0
[1,1,0,1,0,1,0,1,0,0] => [5,6,1,2,3,4] => [1,5,3,2,6,4] => [1,3,6,4,2,5] => 1
[1,1,0,1,0,1,1,0,0,0] => [5,4,1,2,6,3] => [1,5,6,3,2,4] => [1,5,2,6,4,3] => 2
[1,1,0,1,1,0,0,0,1,0] => [4,3,1,6,2,5] => [1,4,6,5,2,3] => [1,5,2,4,6,3] => 1
[1,1,0,1,1,0,0,1,0,0] => [6,3,1,5,2,4] => [1,6,4,5,2,3] => [1,6,3,4,5,2] => 0
[1,1,0,1,1,0,1,0,0,0] => [6,4,1,5,2,3] => [1,6,3,2,4,5] => [1,3,6,5,4,2] => 0
[1,1,0,1,1,1,0,0,0,0] => [4,3,1,5,6,2] => [1,4,5,6,2,3] => [1,6,3,5,2,4] => 1
[1,1,1,0,0,0,1,0,1,0] => [2,3,6,1,4,5] => [1,2,3,6,5,4] => [1,2,3,5,6,4] => 0
[1,1,1,0,0,0,1,1,0,0] => [2,3,5,1,6,4] => [1,2,3,5,6,4] => [1,2,3,6,4,5] => 1
[1,1,1,0,0,1,0,0,1,0] => [2,6,4,1,3,5] => [1,2,6,5,3,4] => [1,2,6,4,5,3] => 0
[1,1,1,0,0,1,0,1,0,0] => [2,6,5,1,3,4] => [1,2,6,4,3,5] => [1,2,4,6,5,3] => 0
[1,1,1,0,0,1,1,0,0,0] => [2,5,4,1,6,3] => [1,2,5,6,3,4] => [1,2,5,3,6,4] => 1
[1,1,1,0,1,0,0,0,1,0] => [6,3,4,1,2,5] => [1,6,5,2,3,4] => [1,5,3,6,4,2] => 1
[1,1,1,0,1,0,0,1,0,0] => [6,3,5,1,2,4] => [1,6,4,2,3,5] => [1,6,5,3,4,2] => 1
[1,1,1,0,1,0,1,0,0,0] => [6,5,4,1,2,3] => [1,6,3,4,2,5] => [1,3,4,6,5,2] => 0
[1,1,1,0,1,1,0,0,0,0] => [5,3,4,1,6,2] => [1,5,6,2,3,4] => [1,6,4,2,5,3] => 1
[1,1,1,1,0,0,0,0,1,0] => [2,3,4,6,1,5] => [1,2,3,4,6,5] => [1,2,3,4,6,5] => 0
[1,1,1,1,0,0,0,1,0,0] => [2,3,6,5,1,4] => [1,2,3,6,4,5] => [1,2,3,6,5,4] => 0
[1,1,1,1,0,0,1,0,0,0] => [2,6,4,5,1,3] => [1,2,6,3,4,5] => [1,2,6,5,4,3] => 0
[1,1,1,1,0,1,0,0,0,0] => [6,3,4,5,1,2] => [1,6,2,3,4,5] => [1,6,5,4,3,2] => 0
[1,1,1,1,1,0,0,0,0,0] => [2,3,4,5,6,1] => [1,2,3,4,5,6] => [1,2,3,4,5,6] => 0
[] => [1] => [1] => [1] => 0
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Description
The cycle descent number of a permutation.
Let $(i_1,\ldots,i_k)$ be a cycle of a permutation $\pi$ such that $i_1$ is its smallest element. A **cycle descent** of $(i_1,\ldots,i_k)$ is an $i_a$ for $1 \leq a < k$ such that $i_a > i_{a+1}$. The **cycle descent set** of $\pi$ is then the set of descents in all the cycles of $\pi$, and the **cycle descent number** is its cardinality.
Map
cycle-as-one-line notation
Description
Return the permutation obtained by concatenating the cycles of a permutation, each written with minimal element first, sorted by minimal element.
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.
Map
Ringel
Description
The Ringel permutation of the LNakayama algebra corresponding to a Dyck path.