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WeylGroups :: reflect(RootSystem,ZZ,Weight)

reflect(RootSystem,ZZ,Weight) -- apply to a weight the reflection with respect to a root

Synopsis

Description

i1 : R = rootSystemB(4)

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

o1 : RootSystem
i2 : p = halfSumOfRoots(R)

o2 = | 1 |
     | 1 |
     | 1 |
     | 1 |

o2 : Weight
i3 : reflect(R,4,p)

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

o3 : Weight