numberOfPositiveRoots(DynkinType) -- the number of positive roots

• Function: numberOfPositiveRoots

• Usage:

  numberOfPositiveRoots(D)

• Inputs:
  • D, an instance of the type DynkinType,
• Outputs:
  • an integer, the number of positive roots of D

i1 : D=dynkinType{{"A",5},{"E",6}}

o1 = DynkinType{{A, 5}, {E, 6}}

o1 : DynkinType

i2 : numberOfPositiveRoots(D)

o2 = 51