ButcherAlpha
ButcherAlpha[tree]
gives the number of ways of labeling the vertices of tree with a totally ordered set of labels such that if 
is an edge, then 
.
NumericalDifferentialEquationAnalysis`
NumericalDifferentialEquationAnalysis`
ButcherAlpha
ButcherAlpha[tree]
gives the number of ways of labeling the vertices of tree with a totally ordered set of labels such that if 
is an edge, then 
.
更多信息和选项
- To use ButcherAlpha, you first need to load the Numerical Differential Equation Analysis Package using Needs["NumericalDifferentialEquationAnalysis`"].