Identifier
-
Mp00128:
Set partitions
—to composition⟶
Integer compositions
Mp00173: Integer compositions —rotate front to back⟶ Integer compositions
Mp00184: Integer compositions —to threshold graph⟶ Graphs
St001644: Graphs ⟶ ℤ
Values
{{1}} => [1] => [1] => ([],1) => 0
{{1,2}} => [2] => [2] => ([],2) => 0
{{1},{2}} => [1,1] => [1,1] => ([(0,1)],2) => 1
{{1,2,3}} => [3] => [3] => ([],3) => 0
{{1,2},{3}} => [2,1] => [1,2] => ([(1,2)],3) => 1
{{1,3},{2}} => [2,1] => [1,2] => ([(1,2)],3) => 1
{{1},{2,3}} => [1,2] => [2,1] => ([(0,2),(1,2)],3) => 1
{{1},{2},{3}} => [1,1,1] => [1,1,1] => ([(0,1),(0,2),(1,2)],3) => 2
{{1,2,3,4}} => [4] => [4] => ([],4) => 0
{{1,2,3},{4}} => [3,1] => [1,3] => ([(2,3)],4) => 1
{{1,2,4},{3}} => [3,1] => [1,3] => ([(2,3)],4) => 1
{{1,2},{3,4}} => [2,2] => [2,2] => ([(1,3),(2,3)],4) => 1
{{1,2},{3},{4}} => [2,1,1] => [1,1,2] => ([(1,2),(1,3),(2,3)],4) => 2
{{1,3,4},{2}} => [3,1] => [1,3] => ([(2,3)],4) => 1
{{1,3},{2,4}} => [2,2] => [2,2] => ([(1,3),(2,3)],4) => 1
{{1,3},{2},{4}} => [2,1,1] => [1,1,2] => ([(1,2),(1,3),(2,3)],4) => 2
{{1,4},{2,3}} => [2,2] => [2,2] => ([(1,3),(2,3)],4) => 1
{{1},{2,3,4}} => [1,3] => [3,1] => ([(0,3),(1,3),(2,3)],4) => 2
{{1},{2,3},{4}} => [1,2,1] => [2,1,1] => ([(0,2),(0,3),(1,2),(1,3),(2,3)],4) => 2
{{1,4},{2},{3}} => [2,1,1] => [1,1,2] => ([(1,2),(1,3),(2,3)],4) => 2
{{1},{2,4},{3}} => [1,2,1] => [2,1,1] => ([(0,2),(0,3),(1,2),(1,3),(2,3)],4) => 2
{{1},{2},{3,4}} => [1,1,2] => [1,2,1] => ([(0,3),(1,2),(1,3),(2,3)],4) => 2
{{1},{2},{3},{4}} => [1,1,1,1] => [1,1,1,1] => ([(0,1),(0,2),(0,3),(1,2),(1,3),(2,3)],4) => 3
{{1,2,3,4,5}} => [5] => [5] => ([],5) => 0
{{1,2,3,4},{5}} => [4,1] => [1,4] => ([(3,4)],5) => 1
{{1,2,3,5},{4}} => [4,1] => [1,4] => ([(3,4)],5) => 1
{{1,2,3},{4,5}} => [3,2] => [2,3] => ([(2,4),(3,4)],5) => 1
{{1,2,3},{4},{5}} => [3,1,1] => [1,1,3] => ([(2,3),(2,4),(3,4)],5) => 2
{{1,2,4,5},{3}} => [4,1] => [1,4] => ([(3,4)],5) => 1
{{1,2,4},{3,5}} => [3,2] => [2,3] => ([(2,4),(3,4)],5) => 1
{{1,2,4},{3},{5}} => [3,1,1] => [1,1,3] => ([(2,3),(2,4),(3,4)],5) => 2
{{1,2,5},{3,4}} => [3,2] => [2,3] => ([(2,4),(3,4)],5) => 1
{{1,2},{3,4,5}} => [2,3] => [3,2] => ([(1,4),(2,4),(3,4)],5) => 2
{{1,2},{3,4},{5}} => [2,2,1] => [2,1,2] => ([(1,3),(1,4),(2,3),(2,4),(3,4)],5) => 2
{{1,2,5},{3},{4}} => [3,1,1] => [1,1,3] => ([(2,3),(2,4),(3,4)],5) => 2
{{1,2},{3,5},{4}} => [2,2,1] => [2,1,2] => ([(1,3),(1,4),(2,3),(2,4),(3,4)],5) => 2
{{1,2},{3},{4,5}} => [2,1,2] => [1,2,2] => ([(1,4),(2,3),(2,4),(3,4)],5) => 2
{{1,2},{3},{4},{5}} => [2,1,1,1] => [1,1,1,2] => ([(1,2),(1,3),(1,4),(2,3),(2,4),(3,4)],5) => 3
{{1,3,4,5},{2}} => [4,1] => [1,4] => ([(3,4)],5) => 1
{{1,3,4},{2,5}} => [3,2] => [2,3] => ([(2,4),(3,4)],5) => 1
{{1,3,4},{2},{5}} => [3,1,1] => [1,1,3] => ([(2,3),(2,4),(3,4)],5) => 2
{{1,3,5},{2,4}} => [3,2] => [2,3] => ([(2,4),(3,4)],5) => 1
{{1,3},{2,4,5}} => [2,3] => [3,2] => ([(1,4),(2,4),(3,4)],5) => 2
{{1,3},{2,4},{5}} => [2,2,1] => [2,1,2] => ([(1,3),(1,4),(2,3),(2,4),(3,4)],5) => 2
{{1,3,5},{2},{4}} => [3,1,1] => [1,1,3] => ([(2,3),(2,4),(3,4)],5) => 2
{{1,3},{2,5},{4}} => [2,2,1] => [2,1,2] => ([(1,3),(1,4),(2,3),(2,4),(3,4)],5) => 2
{{1,3},{2},{4,5}} => [2,1,2] => [1,2,2] => ([(1,4),(2,3),(2,4),(3,4)],5) => 2
{{1,3},{2},{4},{5}} => [2,1,1,1] => [1,1,1,2] => ([(1,2),(1,3),(1,4),(2,3),(2,4),(3,4)],5) => 3
{{1,4,5},{2,3}} => [3,2] => [2,3] => ([(2,4),(3,4)],5) => 1
{{1,4},{2,3,5}} => [2,3] => [3,2] => ([(1,4),(2,4),(3,4)],5) => 2
{{1,4},{2,3},{5}} => [2,2,1] => [2,1,2] => ([(1,3),(1,4),(2,3),(2,4),(3,4)],5) => 2
{{1,5},{2,3,4}} => [2,3] => [3,2] => ([(1,4),(2,4),(3,4)],5) => 2
{{1},{2,3,4,5}} => [1,4] => [4,1] => ([(0,4),(1,4),(2,4),(3,4)],5) => 2
{{1,5},{2,3},{4}} => [2,2,1] => [2,1,2] => ([(1,3),(1,4),(2,3),(2,4),(3,4)],5) => 2
{{1},{2,3},{4,5}} => [1,2,2] => [2,2,1] => ([(0,4),(1,3),(1,4),(2,3),(2,4),(3,4)],5) => 2
{{1},{2,3},{4},{5}} => [1,2,1,1] => [2,1,1,1] => ([(0,2),(0,3),(0,4),(1,2),(1,3),(1,4),(2,3),(2,4),(3,4)],5) => 3
{{1,4,5},{2},{3}} => [3,1,1] => [1,1,3] => ([(2,3),(2,4),(3,4)],5) => 2
{{1,4},{2,5},{3}} => [2,2,1] => [2,1,2] => ([(1,3),(1,4),(2,3),(2,4),(3,4)],5) => 2
{{1,4},{2},{3,5}} => [2,1,2] => [1,2,2] => ([(1,4),(2,3),(2,4),(3,4)],5) => 2
{{1,4},{2},{3},{5}} => [2,1,1,1] => [1,1,1,2] => ([(1,2),(1,3),(1,4),(2,3),(2,4),(3,4)],5) => 3
{{1,5},{2,4},{3}} => [2,2,1] => [2,1,2] => ([(1,3),(1,4),(2,3),(2,4),(3,4)],5) => 2
{{1},{2,4},{3,5}} => [1,2,2] => [2,2,1] => ([(0,4),(1,3),(1,4),(2,3),(2,4),(3,4)],5) => 2
{{1},{2,4},{3},{5}} => [1,2,1,1] => [2,1,1,1] => ([(0,2),(0,3),(0,4),(1,2),(1,3),(1,4),(2,3),(2,4),(3,4)],5) => 3
{{1,5},{2},{3,4}} => [2,1,2] => [1,2,2] => ([(1,4),(2,3),(2,4),(3,4)],5) => 2
{{1},{2,5},{3,4}} => [1,2,2] => [2,2,1] => ([(0,4),(1,3),(1,4),(2,3),(2,4),(3,4)],5) => 2
{{1},{2},{3,4,5}} => [1,1,3] => [1,3,1] => ([(0,4),(1,4),(2,3),(2,4),(3,4)],5) => 2
{{1,5},{2},{3},{4}} => [2,1,1,1] => [1,1,1,2] => ([(1,2),(1,3),(1,4),(2,3),(2,4),(3,4)],5) => 3
{{1},{2,5},{3},{4}} => [1,2,1,1] => [2,1,1,1] => ([(0,2),(0,3),(0,4),(1,2),(1,3),(1,4),(2,3),(2,4),(3,4)],5) => 3
{{1},{2},{3},{4,5}} => [1,1,1,2] => [1,1,2,1] => ([(0,4),(1,2),(1,3),(1,4),(2,3),(2,4),(3,4)],5) => 3
{{1},{2},{3},{4},{5}} => [1,1,1,1,1] => [1,1,1,1,1] => ([(0,1),(0,2),(0,3),(0,4),(1,2),(1,3),(1,4),(2,3),(2,4),(3,4)],5) => 4
{{1,2,3,4,5,6}} => [6] => [6] => ([],6) => 0
{{1,2,3,4,5},{6}} => [5,1] => [1,5] => ([(4,5)],6) => 1
{{1,2,3,4,6},{5}} => [5,1] => [1,5] => ([(4,5)],6) => 1
{{1,2,3,4},{5,6}} => [4,2] => [2,4] => ([(3,5),(4,5)],6) => 1
{{1,2,3,4},{5},{6}} => [4,1,1] => [1,1,4] => ([(3,4),(3,5),(4,5)],6) => 2
{{1,2,3,5,6},{4}} => [5,1] => [1,5] => ([(4,5)],6) => 1
{{1,2,3,5},{4,6}} => [4,2] => [2,4] => ([(3,5),(4,5)],6) => 1
{{1,2,3,5},{4},{6}} => [4,1,1] => [1,1,4] => ([(3,4),(3,5),(4,5)],6) => 2
{{1,2,3,6},{4,5}} => [4,2] => [2,4] => ([(3,5),(4,5)],6) => 1
{{1,2,3},{4,5,6}} => [3,3] => [3,3] => ([(2,5),(3,5),(4,5)],6) => 2
{{1,2,3},{4,5},{6}} => [3,2,1] => [2,1,3] => ([(2,4),(2,5),(3,4),(3,5),(4,5)],6) => 2
{{1,2,3,6},{4},{5}} => [4,1,1] => [1,1,4] => ([(3,4),(3,5),(4,5)],6) => 2
{{1,2,3},{4,6},{5}} => [3,2,1] => [2,1,3] => ([(2,4),(2,5),(3,4),(3,5),(4,5)],6) => 2
{{1,2,3},{4},{5,6}} => [3,1,2] => [1,2,3] => ([(2,5),(3,4),(3,5),(4,5)],6) => 2
{{1,2,3},{4},{5},{6}} => [3,1,1,1] => [1,1,1,3] => ([(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6) => 3
{{1,2,4,5,6},{3}} => [5,1] => [1,5] => ([(4,5)],6) => 1
{{1,2,4,5},{3,6}} => [4,2] => [2,4] => ([(3,5),(4,5)],6) => 1
{{1,2,4,5},{3},{6}} => [4,1,1] => [1,1,4] => ([(3,4),(3,5),(4,5)],6) => 2
{{1,2,4,6},{3,5}} => [4,2] => [2,4] => ([(3,5),(4,5)],6) => 1
{{1,2,4},{3,5,6}} => [3,3] => [3,3] => ([(2,5),(3,5),(4,5)],6) => 2
{{1,2,4},{3,5},{6}} => [3,2,1] => [2,1,3] => ([(2,4),(2,5),(3,4),(3,5),(4,5)],6) => 2
{{1,2,4,6},{3},{5}} => [4,1,1] => [1,1,4] => ([(3,4),(3,5),(4,5)],6) => 2
{{1,2,4},{3,6},{5}} => [3,2,1] => [2,1,3] => ([(2,4),(2,5),(3,4),(3,5),(4,5)],6) => 2
{{1,2,4},{3},{5,6}} => [3,1,2] => [1,2,3] => ([(2,5),(3,4),(3,5),(4,5)],6) => 2
{{1,2,4},{3},{5},{6}} => [3,1,1,1] => [1,1,1,3] => ([(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6) => 3
{{1,2,5,6},{3,4}} => [4,2] => [2,4] => ([(3,5),(4,5)],6) => 1
{{1,2,5},{3,4,6}} => [3,3] => [3,3] => ([(2,5),(3,5),(4,5)],6) => 2
{{1,2,5},{3,4},{6}} => [3,2,1] => [2,1,3] => ([(2,4),(2,5),(3,4),(3,5),(4,5)],6) => 2
{{1,2,6},{3,4,5}} => [3,3] => [3,3] => ([(2,5),(3,5),(4,5)],6) => 2
{{1,2},{3,4,5,6}} => [2,4] => [4,2] => ([(1,5),(2,5),(3,5),(4,5)],6) => 2
{{1,2,6},{3,4},{5}} => [3,2,1] => [2,1,3] => ([(2,4),(2,5),(3,4),(3,5),(4,5)],6) => 2
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Description
The dimension of a graph.
The dimension of a graph is the least integer n such that there exists a representation of the graph in the Euclidean space of dimension n with all vertices distinct and all edges having unit length. Edges are allowed to intersect, however.
The dimension of a graph is the least integer n such that there exists a representation of the graph in the Euclidean space of dimension n with all vertices distinct and all edges having unit length. Edges are allowed to intersect, however.
Map
to threshold graph
Description
The threshold graph corresponding to the composition.
A threshold graph is a graph that can be obtained from the empty graph by adding successively isolated and dominating vertices.
A threshold graph is uniquely determined by its degree sequence.
The Laplacian spectrum of a threshold graph is integral. Interpreting it as an integer partition, it is the conjugate of the partition given by its degree sequence.
A threshold graph is a graph that can be obtained from the empty graph by adding successively isolated and dominating vertices.
A threshold graph is uniquely determined by its degree sequence.
The Laplacian spectrum of a threshold graph is integral. Interpreting it as an integer partition, it is the conjugate of the partition given by its degree sequence.
Map
to composition
Description
The integer composition of block sizes of a set partition.
For a set partition of {1,2,…,n}, this is the integer composition of n obtained by sorting the blocks by their minimal element and then taking the block sizes.
For a set partition of {1,2,…,n}, this is the integer composition of n obtained by sorting the blocks by their minimal element and then taking the block sizes.
Map
rotate front to back
Description
The front to back rotation of the entries of an integer composition.
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