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WeylGroups :: numberOfPositiveRoots(DynkinType)

numberOfPositiveRoots(DynkinType) -- the number of positive roots

Synopsis

Description

i1 : D=dynkinType{{"A",5},{"E",6}}

o1 = DynkinType{{A, 5}, {E, 6}}

o1 : DynkinType
i2 : numberOfPositiveRoots(D)

o2 = 51