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WeylGroups :: rootSystem(DynkinDiagram)

rootSystem(DynkinDiagram) -- the root system corresponding to a Dynkin diagram

Synopsis

Description

i1 : R1=rootSystemB(3)++rootSystemD(4)

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

o1 : RootSystem
i2 : D=dynkinDiagram(R1)

o2 = DynkinDiagram{{{2}, {}, {}, {}, {}}, {{1}, {3}, {}, {}, {}}, {{}, {}, {2}, {}, {}}, {{5}, {}, {}, {}, {}}, {{4, 6, 7}, {}, {}, {}, {}}, {{5}, {}, {}, {}, {}}, {{5}, {}, {}, {}, {}}}

o2 : DynkinDiagram
i3 : R2=rootSystem(D)

o3 = RootSystem{...8...}

o3 : RootSystem
i4 : R1==R2

o4 = true