simpleRoot(RootSystem,ZZ) -- the n-th simple root

Synopsis

• Function: simpleRoot

• Usage:

  simpleRoot(R,n)

• Inputs:
  • R, an instance of the type RootSystem,
  • n, an integer,
• Outputs:
  • an instance of the type Root, the n-th simple root of R

Description

i1 : simpleRoot(rootSystemE(6),2)

o1 = |  0 |
     |  2 |
     |  0 |
     | -1 |
     |  0 |
     |  0 |

       6
o1 : ZZ