Identifier
-
Mp00024:
Dyck paths
—to 321-avoiding permutation⟶
Permutations
Mp00066: Permutations —inverse⟶ Permutations
St000990: Permutations ⟶ ℤ
Values
[1,0,1,0] => [2,1] => [2,1] => 2
[1,1,0,0] => [1,2] => [1,2] => 1
[1,0,1,0,1,0] => [2,1,3] => [2,1,3] => 2
[1,0,1,1,0,0] => [2,3,1] => [3,1,2] => 2
[1,1,0,0,1,0] => [3,1,2] => [2,3,1] => 1
[1,1,0,1,0,0] => [1,3,2] => [1,3,2] => 1
[1,1,1,0,0,0] => [1,2,3] => [1,2,3] => 1
[1,0,1,0,1,0,1,0] => [2,1,4,3] => [2,1,4,3] => 2
[1,0,1,0,1,1,0,0] => [2,4,1,3] => [3,1,4,2] => 2
[1,0,1,1,0,0,1,0] => [2,1,3,4] => [2,1,3,4] => 2
[1,0,1,1,0,1,0,0] => [2,3,1,4] => [3,1,2,4] => 2
[1,0,1,1,1,0,0,0] => [2,3,4,1] => [4,1,2,3] => 2
[1,1,0,0,1,0,1,0] => [3,1,4,2] => [2,4,1,3] => 1
[1,1,0,0,1,1,0,0] => [3,4,1,2] => [3,4,1,2] => 1
[1,1,0,1,0,0,1,0] => [3,1,2,4] => [2,3,1,4] => 1
[1,1,0,1,0,1,0,0] => [1,3,2,4] => [1,3,2,4] => 1
[1,1,0,1,1,0,0,0] => [1,3,4,2] => [1,4,2,3] => 1
[1,1,1,0,0,0,1,0] => [4,1,2,3] => [2,3,4,1] => 1
[1,1,1,0,0,1,0,0] => [1,4,2,3] => [1,3,4,2] => 1
[1,1,1,0,1,0,0,0] => [1,2,4,3] => [1,2,4,3] => 1
[1,1,1,1,0,0,0,0] => [1,2,3,4] => [1,2,3,4] => 1
[1,0,1,0,1,0,1,0,1,0] => [2,1,4,3,5] => [2,1,4,3,5] => 2
[1,0,1,0,1,0,1,1,0,0] => [2,4,1,3,5] => [3,1,4,2,5] => 2
[1,0,1,0,1,1,0,0,1,0] => [2,1,4,5,3] => [2,1,5,3,4] => 2
[1,0,1,0,1,1,0,1,0,0] => [2,4,1,5,3] => [3,1,5,2,4] => 2
[1,0,1,0,1,1,1,0,0,0] => [2,4,5,1,3] => [4,1,5,2,3] => 2
[1,0,1,1,0,0,1,0,1,0] => [2,1,5,3,4] => [2,1,4,5,3] => 2
[1,0,1,1,0,0,1,1,0,0] => [2,5,1,3,4] => [3,1,4,5,2] => 2
[1,0,1,1,0,1,0,0,1,0] => [2,1,3,5,4] => [2,1,3,5,4] => 2
[1,0,1,1,0,1,0,1,0,0] => [2,3,1,5,4] => [3,1,2,5,4] => 2
[1,0,1,1,0,1,1,0,0,0] => [2,3,5,1,4] => [4,1,2,5,3] => 2
[1,0,1,1,1,0,0,0,1,0] => [2,1,3,4,5] => [2,1,3,4,5] => 2
[1,0,1,1,1,0,0,1,0,0] => [2,3,1,4,5] => [3,1,2,4,5] => 2
[1,0,1,1,1,0,1,0,0,0] => [2,3,4,1,5] => [4,1,2,3,5] => 2
[1,0,1,1,1,1,0,0,0,0] => [2,3,4,5,1] => [5,1,2,3,4] => 2
[1,1,0,0,1,0,1,0,1,0] => [3,1,4,2,5] => [2,4,1,3,5] => 1
[1,1,0,0,1,0,1,1,0,0] => [3,4,1,2,5] => [3,4,1,2,5] => 1
[1,1,0,0,1,1,0,0,1,0] => [3,1,4,5,2] => [2,5,1,3,4] => 1
[1,1,0,0,1,1,0,1,0,0] => [3,4,1,5,2] => [3,5,1,2,4] => 1
[1,1,0,0,1,1,1,0,0,0] => [3,4,5,1,2] => [4,5,1,2,3] => 1
[1,1,0,1,0,0,1,0,1,0] => [3,1,5,2,4] => [2,4,1,5,3] => 1
[1,1,0,1,0,0,1,1,0,0] => [3,5,1,2,4] => [3,4,1,5,2] => 1
[1,1,0,1,0,1,0,0,1,0] => [3,1,2,5,4] => [2,3,1,5,4] => 1
[1,1,0,1,0,1,0,1,0,0] => [1,3,2,5,4] => [1,3,2,5,4] => 1
[1,1,0,1,0,1,1,0,0,0] => [1,3,5,2,4] => [1,4,2,5,3] => 1
[1,1,0,1,1,0,0,0,1,0] => [3,1,2,4,5] => [2,3,1,4,5] => 1
[1,1,0,1,1,0,0,1,0,0] => [1,3,2,4,5] => [1,3,2,4,5] => 1
[1,1,0,1,1,0,1,0,0,0] => [1,3,4,2,5] => [1,4,2,3,5] => 1
[1,1,0,1,1,1,0,0,0,0] => [1,3,4,5,2] => [1,5,2,3,4] => 1
[1,1,1,0,0,0,1,0,1,0] => [4,1,5,2,3] => [2,4,5,1,3] => 1
[1,1,1,0,0,0,1,1,0,0] => [4,5,1,2,3] => [3,4,5,1,2] => 1
[1,1,1,0,0,1,0,0,1,0] => [4,1,2,5,3] => [2,3,5,1,4] => 1
[1,1,1,0,0,1,0,1,0,0] => [1,4,2,5,3] => [1,3,5,2,4] => 1
[1,1,1,0,0,1,1,0,0,0] => [1,4,5,2,3] => [1,4,5,2,3] => 1
[1,1,1,0,1,0,0,0,1,0] => [4,1,2,3,5] => [2,3,4,1,5] => 1
[1,1,1,0,1,0,0,1,0,0] => [1,4,2,3,5] => [1,3,4,2,5] => 1
[1,1,1,0,1,0,1,0,0,0] => [1,2,4,3,5] => [1,2,4,3,5] => 1
[1,1,1,0,1,1,0,0,0,0] => [1,2,4,5,3] => [1,2,5,3,4] => 1
[1,1,1,1,0,0,0,0,1,0] => [5,1,2,3,4] => [2,3,4,5,1] => 1
[1,1,1,1,0,0,0,1,0,0] => [1,5,2,3,4] => [1,3,4,5,2] => 1
[1,1,1,1,0,0,1,0,0,0] => [1,2,5,3,4] => [1,2,4,5,3] => 1
[1,1,1,1,0,1,0,0,0,0] => [1,2,3,5,4] => [1,2,3,5,4] => 1
[1,1,1,1,1,0,0,0,0,0] => [1,2,3,4,5] => [1,2,3,4,5] => 1
[1,0,1,0,1,0,1,0,1,0,1,0] => [2,1,4,3,6,5] => [2,1,4,3,6,5] => 2
[1,0,1,0,1,0,1,0,1,1,0,0] => [2,4,1,3,6,5] => [3,1,4,2,6,5] => 2
[1,0,1,0,1,0,1,1,0,0,1,0] => [2,1,4,6,3,5] => [2,1,5,3,6,4] => 2
[1,0,1,0,1,0,1,1,0,1,0,0] => [2,4,1,6,3,5] => [3,1,5,2,6,4] => 2
[1,0,1,0,1,0,1,1,1,0,0,0] => [2,4,6,1,3,5] => [4,1,5,2,6,3] => 2
[1,0,1,0,1,1,0,0,1,0,1,0] => [2,1,4,3,5,6] => [2,1,4,3,5,6] => 2
[1,0,1,0,1,1,0,0,1,1,0,0] => [2,4,1,3,5,6] => [3,1,4,2,5,6] => 2
[1,0,1,0,1,1,0,1,0,0,1,0] => [2,1,4,5,3,6] => [2,1,5,3,4,6] => 2
[1,0,1,0,1,1,0,1,0,1,0,0] => [2,4,1,5,3,6] => [3,1,5,2,4,6] => 2
[1,0,1,0,1,1,0,1,1,0,0,0] => [2,4,5,1,3,6] => [4,1,5,2,3,6] => 2
[1,0,1,0,1,1,1,0,0,0,1,0] => [2,1,4,5,6,3] => [2,1,6,3,4,5] => 2
[1,0,1,0,1,1,1,0,0,1,0,0] => [2,4,1,5,6,3] => [3,1,6,2,4,5] => 2
[1,0,1,0,1,1,1,0,1,0,0,0] => [2,4,5,1,6,3] => [4,1,6,2,3,5] => 2
[1,0,1,0,1,1,1,1,0,0,0,0] => [2,4,5,6,1,3] => [5,1,6,2,3,4] => 2
[1,0,1,1,0,0,1,0,1,0,1,0] => [2,1,5,3,6,4] => [2,1,4,6,3,5] => 2
[1,0,1,1,0,0,1,0,1,1,0,0] => [2,5,1,3,6,4] => [3,1,4,6,2,5] => 2
[1,0,1,1,0,0,1,1,0,0,1,0] => [2,1,5,6,3,4] => [2,1,5,6,3,4] => 2
[1,0,1,1,0,0,1,1,0,1,0,0] => [2,5,1,6,3,4] => [3,1,5,6,2,4] => 2
[1,0,1,1,0,0,1,1,1,0,0,0] => [2,5,6,1,3,4] => [4,1,5,6,2,3] => 2
[1,0,1,1,0,1,0,0,1,0,1,0] => [2,1,5,3,4,6] => [2,1,4,5,3,6] => 2
[1,0,1,1,0,1,0,0,1,1,0,0] => [2,5,1,3,4,6] => [3,1,4,5,2,6] => 2
[1,0,1,1,0,1,0,1,0,0,1,0] => [2,1,3,5,4,6] => [2,1,3,5,4,6] => 2
[1,0,1,1,0,1,0,1,0,1,0,0] => [2,3,1,5,4,6] => [3,1,2,5,4,6] => 2
[1,0,1,1,0,1,0,1,1,0,0,0] => [2,3,5,1,4,6] => [4,1,2,5,3,6] => 2
[1,0,1,1,0,1,1,0,0,0,1,0] => [2,1,3,5,6,4] => [2,1,3,6,4,5] => 2
[1,0,1,1,0,1,1,0,0,1,0,0] => [2,3,1,5,6,4] => [3,1,2,6,4,5] => 2
[1,0,1,1,0,1,1,0,1,0,0,0] => [2,3,5,1,6,4] => [4,1,2,6,3,5] => 2
[1,0,1,1,0,1,1,1,0,0,0,0] => [2,3,5,6,1,4] => [5,1,2,6,3,4] => 2
[1,0,1,1,1,0,0,0,1,0,1,0] => [2,1,6,3,4,5] => [2,1,4,5,6,3] => 2
[1,0,1,1,1,0,0,0,1,1,0,0] => [2,6,1,3,4,5] => [3,1,4,5,6,2] => 2
[1,0,1,1,1,0,0,1,0,0,1,0] => [2,1,3,6,4,5] => [2,1,3,5,6,4] => 2
[1,0,1,1,1,0,0,1,0,1,0,0] => [2,3,1,6,4,5] => [3,1,2,5,6,4] => 2
[1,0,1,1,1,0,0,1,1,0,0,0] => [2,3,6,1,4,5] => [4,1,2,5,6,3] => 2
[1,0,1,1,1,0,1,0,0,0,1,0] => [2,1,3,4,6,5] => [2,1,3,4,6,5] => 2
[1,0,1,1,1,0,1,0,0,1,0,0] => [2,3,1,4,6,5] => [3,1,2,4,6,5] => 2
[1,0,1,1,1,0,1,0,1,0,0,0] => [2,3,4,1,6,5] => [4,1,2,3,6,5] => 2
[1,0,1,1,1,0,1,1,0,0,0,0] => [2,3,4,6,1,5] => [5,1,2,3,6,4] => 2
[1,0,1,1,1,1,0,0,0,0,1,0] => [2,1,3,4,5,6] => [2,1,3,4,5,6] => 2
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Description
The first ascent of a permutation.
For a permutation $\pi$, this is the smallest index such that $\pi(i) < \pi(i+1)$.
For the first descent, see St000654The first descent of a permutation..
For a permutation $\pi$, this is the smallest index such that $\pi(i) < \pi(i+1)$.
For the first descent, see St000654The first descent of a permutation..
Map
inverse
Description
Sends a permutation to its inverse.
Map
to 321-avoiding permutation
Description
Sends a Dyck path to a 321-avoiding permutation.
This bijection defined in [3, pp. 60] and in [2, Section 3.1].
It is shown in [1] that it sends the number of centered tunnels to the number of fixed points, the number of right tunnels to the number of exceedences, and the semilength plus the height of the middle point to 2 times the length of the longest increasing subsequence.
This bijection defined in [3, pp. 60] and in [2, Section 3.1].
It is shown in [1] that it sends the number of centered tunnels to the number of fixed points, the number of right tunnels to the number of exceedences, and the semilength plus the height of the middle point to 2 times the length of the longest increasing subsequence.
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