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parabolic(RootSystem,Set) -- construct a parabolic from a set of simple roots
Synopsis
Function:
parabolic
Usage:
parabolic(R,S)
Inputs:
R
,
an instance of the type
RootSystem
,
S
,
a
set
, the subsets of simple roots defining the standard parabolic
Outputs:
an instance of the type
Parabolic
, a standard parabolic subgroup represented by a set of simple roots
Description
i1 : parabolic(rootSystemA(5),set{1,2}) o1 = set {1, 2} o1 : Parabolic
Ways to use this method:
parabolic(RootSystem,Set)
-- construct a parabolic from a set of simple roots