Number of trees matching a bipartition split

Calculates the number of unrooted bifurcated trees that are consistent with a bipartition split that divides taxa into groups of size A and B.

Usage

TreesMatchingSplit(A, B = A[2])

LnTreesMatchingSplit(A, B = A[2])

Log2TreesMatchingSplit(A, B = A[2])

Arguments

A, B

Integer specifying the number of taxa in each partition.

Value

TreesMatchingSplit() returns a numeric specifying the number of trees that are compatible with the given split.

LnTreesMatchingSplit() and Log2TreesMatchingSplit() give the natural and base-2 logarithms of this number.

See also

Other split information functions: CharacterInformation(), SplitInformation(), SplitMatchProbability(), UnrootedTreesMatchingSplit()

Author

Martin R. Smith (martin.smith@durham.ac.uk)

Examples

TreesMatchingSplit(5, 6)
#> [1] 99225
LnTreesMatchingSplit(5, 6)
#> [1] 11.50515
Log2TreesMatchingSplit(5, 6)
#> [1] 16.59842