Identifier
Mp00058:
Perfect matchings
—to permutation⟶
Permutations
Mp00114: Permutations —connectivity set⟶ Binary words
Mp00135: Binary words —rotate front-to-back⟶ Binary words
Mp00114: Permutations —connectivity set⟶ Binary words
Mp00135: Binary words —rotate front-to-back⟶ Binary words
Images
[(1,2)] => [2,1] => 0 => 0
[(1,2),(3,4)] => [2,1,4,3] => 010 => 100
[(1,3),(2,4)] => [3,4,1,2] => 000 => 000
[(1,4),(2,3)] => [4,3,2,1] => 000 => 000
[(1,2),(3,4),(5,6)] => [2,1,4,3,6,5] => 01010 => 10100
[(1,3),(2,4),(5,6)] => [3,4,1,2,6,5] => 00010 => 00100
[(1,4),(2,3),(5,6)] => [4,3,2,1,6,5] => 00010 => 00100
[(1,5),(2,3),(4,6)] => [5,3,2,6,1,4] => 00000 => 00000
[(1,6),(2,3),(4,5)] => [6,3,2,5,4,1] => 00000 => 00000
[(1,6),(2,4),(3,5)] => [6,4,5,2,3,1] => 00000 => 00000
[(1,5),(2,4),(3,6)] => [5,4,6,2,1,3] => 00000 => 00000
[(1,4),(2,5),(3,6)] => [4,5,6,1,2,3] => 00000 => 00000
[(1,3),(2,5),(4,6)] => [3,5,1,6,2,4] => 00000 => 00000
[(1,2),(3,5),(4,6)] => [2,1,5,6,3,4] => 01000 => 10000
[(1,2),(3,6),(4,5)] => [2,1,6,5,4,3] => 01000 => 10000
[(1,3),(2,6),(4,5)] => [3,6,1,5,4,2] => 00000 => 00000
[(1,4),(2,6),(3,5)] => [4,6,5,1,3,2] => 00000 => 00000
[(1,5),(2,6),(3,4)] => [5,6,4,3,1,2] => 00000 => 00000
[(1,6),(2,5),(3,4)] => [6,5,4,3,2,1] => 00000 => 00000
[(1,2),(3,4),(5,6),(7,8)] => [2,1,4,3,6,5,8,7] => 0101010 => 1010100
[(1,3),(2,4),(5,6),(7,8)] => [3,4,1,2,6,5,8,7] => 0001010 => 0010100
[(1,4),(2,3),(5,6),(7,8)] => [4,3,2,1,6,5,8,7] => 0001010 => 0010100
[(1,5),(2,3),(4,6),(7,8)] => [5,3,2,6,1,4,8,7] => 0000010 => 0000100
[(1,6),(2,3),(4,5),(7,8)] => [6,3,2,5,4,1,8,7] => 0000010 => 0000100
[(1,7),(2,3),(4,5),(6,8)] => [7,3,2,5,4,8,1,6] => 0000000 => 0000000
[(1,8),(2,3),(4,5),(6,7)] => [8,3,2,5,4,7,6,1] => 0000000 => 0000000
[(1,8),(2,4),(3,5),(6,7)] => [8,4,5,2,3,7,6,1] => 0000000 => 0000000
[(1,7),(2,4),(3,5),(6,8)] => [7,4,5,2,3,8,1,6] => 0000000 => 0000000
[(1,6),(2,4),(3,5),(7,8)] => [6,4,5,2,3,1,8,7] => 0000010 => 0000100
[(1,5),(2,4),(3,6),(7,8)] => [5,4,6,2,1,3,8,7] => 0000010 => 0000100
[(1,4),(2,5),(3,6),(7,8)] => [4,5,6,1,2,3,8,7] => 0000010 => 0000100
[(1,3),(2,5),(4,6),(7,8)] => [3,5,1,6,2,4,8,7] => 0000010 => 0000100
[(1,2),(3,5),(4,6),(7,8)] => [2,1,5,6,3,4,8,7] => 0100010 => 1000100
[(1,2),(3,6),(4,5),(7,8)] => [2,1,6,5,4,3,8,7] => 0100010 => 1000100
[(1,3),(2,6),(4,5),(7,8)] => [3,6,1,5,4,2,8,7] => 0000010 => 0000100
[(1,4),(2,6),(3,5),(7,8)] => [4,6,5,1,3,2,8,7] => 0000010 => 0000100
[(1,5),(2,6),(3,4),(7,8)] => [5,6,4,3,1,2,8,7] => 0000010 => 0000100
[(1,6),(2,5),(3,4),(7,8)] => [6,5,4,3,2,1,8,7] => 0000010 => 0000100
[(1,7),(2,5),(3,4),(6,8)] => [7,5,4,3,2,8,1,6] => 0000000 => 0000000
[(1,8),(2,5),(3,4),(6,7)] => [8,5,4,3,2,7,6,1] => 0000000 => 0000000
[(1,8),(2,6),(3,4),(5,7)] => [8,6,4,3,7,2,5,1] => 0000000 => 0000000
[(1,7),(2,6),(3,4),(5,8)] => [7,6,4,3,8,2,1,5] => 0000000 => 0000000
[(1,6),(2,7),(3,4),(5,8)] => [6,7,4,3,8,1,2,5] => 0000000 => 0000000
[(1,5),(2,7),(3,4),(6,8)] => [5,7,4,3,1,8,2,6] => 0000000 => 0000000
[(1,4),(2,7),(3,5),(6,8)] => [4,7,5,1,3,8,2,6] => 0000000 => 0000000
[(1,3),(2,7),(4,5),(6,8)] => [3,7,1,5,4,8,2,6] => 0000000 => 0000000
[(1,2),(3,7),(4,5),(6,8)] => [2,1,7,5,4,8,3,6] => 0100000 => 1000000
[(1,2),(3,8),(4,5),(6,7)] => [2,1,8,5,4,7,6,3] => 0100000 => 1000000
[(1,3),(2,8),(4,5),(6,7)] => [3,8,1,5,4,7,6,2] => 0000000 => 0000000
[(1,4),(2,8),(3,5),(6,7)] => [4,8,5,1,3,7,6,2] => 0000000 => 0000000
[(1,5),(2,8),(3,4),(6,7)] => [5,8,4,3,1,7,6,2] => 0000000 => 0000000
[(1,6),(2,8),(3,4),(5,7)] => [6,8,4,3,7,1,5,2] => 0000000 => 0000000
[(1,7),(2,8),(3,4),(5,6)] => [7,8,4,3,6,5,1,2] => 0000000 => 0000000
[(1,8),(2,7),(3,4),(5,6)] => [8,7,4,3,6,5,2,1] => 0000000 => 0000000
[(1,8),(2,7),(3,5),(4,6)] => [8,7,5,6,3,4,2,1] => 0000000 => 0000000
[(1,7),(2,8),(3,5),(4,6)] => [7,8,5,6,3,4,1,2] => 0000000 => 0000000
[(1,6),(2,8),(3,5),(4,7)] => [6,8,5,7,3,1,4,2] => 0000000 => 0000000
[(1,5),(2,8),(3,6),(4,7)] => [5,8,6,7,1,3,4,2] => 0000000 => 0000000
[(1,4),(2,8),(3,6),(5,7)] => [4,8,6,1,7,3,5,2] => 0000000 => 0000000
[(1,3),(2,8),(4,6),(5,7)] => [3,8,1,6,7,4,5,2] => 0000000 => 0000000
[(1,2),(3,8),(4,6),(5,7)] => [2,1,8,6,7,4,5,3] => 0100000 => 1000000
[(1,2),(3,7),(4,6),(5,8)] => [2,1,7,6,8,4,3,5] => 0100000 => 1000000
[(1,3),(2,7),(4,6),(5,8)] => [3,7,1,6,8,4,2,5] => 0000000 => 0000000
[(1,4),(2,7),(3,6),(5,8)] => [4,7,6,1,8,3,2,5] => 0000000 => 0000000
[(1,5),(2,7),(3,6),(4,8)] => [5,7,6,8,1,3,2,4] => 0000000 => 0000000
[(1,6),(2,7),(3,5),(4,8)] => [6,7,5,8,3,1,2,4] => 0000000 => 0000000
[(1,7),(2,6),(3,5),(4,8)] => [7,6,5,8,3,2,1,4] => 0000000 => 0000000
[(1,8),(2,6),(3,5),(4,7)] => [8,6,5,7,3,2,4,1] => 0000000 => 0000000
[(1,8),(2,5),(3,6),(4,7)] => [8,5,6,7,2,3,4,1] => 0000000 => 0000000
[(1,7),(2,5),(3,6),(4,8)] => [7,5,6,8,2,3,1,4] => 0000000 => 0000000
[(1,6),(2,5),(3,7),(4,8)] => [6,5,7,8,2,1,3,4] => 0000000 => 0000000
[(1,5),(2,6),(3,7),(4,8)] => [5,6,7,8,1,2,3,4] => 0000000 => 0000000
[(1,4),(2,6),(3,7),(5,8)] => [4,6,7,1,8,2,3,5] => 0000000 => 0000000
[(1,3),(2,6),(4,7),(5,8)] => [3,6,1,7,8,2,4,5] => 0000000 => 0000000
[(1,2),(3,6),(4,7),(5,8)] => [2,1,6,7,8,3,4,5] => 0100000 => 1000000
[(1,2),(3,5),(4,7),(6,8)] => [2,1,5,7,3,8,4,6] => 0100000 => 1000000
[(1,3),(2,5),(4,7),(6,8)] => [3,5,1,7,2,8,4,6] => 0000000 => 0000000
[(1,4),(2,5),(3,7),(6,8)] => [4,5,7,1,2,8,3,6] => 0000000 => 0000000
[(1,5),(2,4),(3,7),(6,8)] => [5,4,7,2,1,8,3,6] => 0000000 => 0000000
[(1,6),(2,4),(3,7),(5,8)] => [6,4,7,2,8,1,3,5] => 0000000 => 0000000
[(1,7),(2,4),(3,6),(5,8)] => [7,4,6,2,8,3,1,5] => 0000000 => 0000000
[(1,8),(2,4),(3,6),(5,7)] => [8,4,6,2,7,3,5,1] => 0000000 => 0000000
[(1,8),(2,3),(4,6),(5,7)] => [8,3,2,6,7,4,5,1] => 0000000 => 0000000
[(1,7),(2,3),(4,6),(5,8)] => [7,3,2,6,8,4,1,5] => 0000000 => 0000000
[(1,6),(2,3),(4,7),(5,8)] => [6,3,2,7,8,1,4,5] => 0000000 => 0000000
[(1,5),(2,3),(4,7),(6,8)] => [5,3,2,7,1,8,4,6] => 0000000 => 0000000
[(1,4),(2,3),(5,7),(6,8)] => [4,3,2,1,7,8,5,6] => 0001000 => 0010000
[(1,3),(2,4),(5,7),(6,8)] => [3,4,1,2,7,8,5,6] => 0001000 => 0010000
[(1,2),(3,4),(5,7),(6,8)] => [2,1,4,3,7,8,5,6] => 0101000 => 1010000
[(1,2),(3,4),(5,8),(6,7)] => [2,1,4,3,8,7,6,5] => 0101000 => 1010000
[(1,3),(2,4),(5,8),(6,7)] => [3,4,1,2,8,7,6,5] => 0001000 => 0010000
[(1,4),(2,3),(5,8),(6,7)] => [4,3,2,1,8,7,6,5] => 0001000 => 0010000
[(1,5),(2,3),(4,8),(6,7)] => [5,3,2,8,1,7,6,4] => 0000000 => 0000000
[(1,6),(2,3),(4,8),(5,7)] => [6,3,2,8,7,1,5,4] => 0000000 => 0000000
[(1,7),(2,3),(4,8),(5,6)] => [7,3,2,8,6,5,1,4] => 0000000 => 0000000
[(1,8),(2,3),(4,7),(5,6)] => [8,3,2,7,6,5,4,1] => 0000000 => 0000000
[(1,8),(2,4),(3,7),(5,6)] => [8,4,7,2,6,5,3,1] => 0000000 => 0000000
[(1,7),(2,4),(3,8),(5,6)] => [7,4,8,2,6,5,1,3] => 0000000 => 0000000
[(1,6),(2,4),(3,8),(5,7)] => [6,4,8,2,7,1,5,3] => 0000000 => 0000000
[(1,5),(2,4),(3,8),(6,7)] => [5,4,8,2,1,7,6,3] => 0000000 => 0000000
[(1,4),(2,5),(3,8),(6,7)] => [4,5,8,1,2,7,6,3] => 0000000 => 0000000
>>> Load all 286 entries. <<<Map
to permutation
Description
Returns the fixed point free involution whose transpositions are the pairs in the perfect matching.
Map
connectivity set
Description
The connectivity set of a permutation as a binary word.
According to [2], also known as the global ascent set.
The connectivity set is
C(π)={i∈[n−1]|∀1≤j≤i<k≤n:π(j)<π(k)}.
For n>1 it can also be described as the set of occurrences of the mesh pattern
([1,2],{(0,2),(1,0),(1,1),(2,0),(2,1)})
or equivalently
([1,2],{(0,1),(0,2),(1,1),(1,2),(2,0)}),
see [3].
The permutation is connected, when the connectivity set is empty.
According to [2], also known as the global ascent set.
The connectivity set is
C(π)={i∈[n−1]|∀1≤j≤i<k≤n:π(j)<π(k)}.
For n>1 it can also be described as the set of occurrences of the mesh pattern
([1,2],{(0,2),(1,0),(1,1),(2,0),(2,1)})
or equivalently
([1,2],{(0,1),(0,2),(1,1),(1,2),(2,0)}),
see [3].
The permutation is connected, when the connectivity set is empty.
Map
rotate front-to-back
Description
The rotation of a binary word, first letter last.
This is the word obtained by moving the first letter to the end.
This is the word obtained by moving the first letter to the end.
searching the database
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