Computes the direct sum of two Lie algebra modules.
i1 : g=simpleLieAlgebra("A",2) o1 = g o1 : LieAlgebra |
i2 : U=irreducibleLieAlgebraModule({4,2},g) o2 = U o2 : g module |
i3 : V=irreducibleLieAlgebraModule({3,1},g) o3 = V o3 : g module |
i4 : U++V o4 = {LieAlgebra => g } isIrreducible => false DecompositionIntoIrreducibles => HashTable{{3, 1} => 1} {4, 2} => 1 o4 : g module |