rank(RootSystem) -- the rank of a root system

• Function: rank

• Usage:

  r=rank(R)

• Inputs:
  • R, an instance of the type RootSystem,
• Outputs:
  • an integer, the rank of R

i1 : R = rootSystemA(5)

o1 = RootSystem{...8...}

o1 : RootSystem

i2 : rank R

o2 = 5