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WeylGroups :: reflect(RootSystem,ZZ,Root)

reflect(RootSystem,ZZ,Root) -- apply to a root the reflection with respect to a simple root

Synopsis

Description

i1 : R = rootSystemB(4)

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

o1 : RootSystem
i2 : r = simpleRoot(R,3)

o2 = |  0 |
     | -1 |
     |  2 |
     | -2 |

o2 : Root
i3 : reflect(R,4,r)

o3 = |  0 |
     | -1 |
     |  0 |
     |  2 |

o3 : Root