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WeylGroups :: positiveRoots(RootSystem)

positiveRoots(RootSystem) -- the set of all positive roots

Synopsis

Description

i1 : positiveRoots(rootSystemA(3))

o1 = set {| -1 |, | -1 |, |  0 |, | 1 |, |  1 |, |  2 |}
          |  1 |  |  2 |  | -1 |  | 0 |  |  1 |  | -1 |
          |  1 |  | -1 |  |  2 |  | 1 |  | -1 |  |  0 |

o1 : Set