Affine Kac-Moody Algebras: (Complex)

The classification of the finite indecomposable G.C.M., and of the as- the simple Lie algebras, is a classical work going Theorem 2. Let A be any indecomposable G.C.M. of affine type. that the ith and jth vertices are connected by an ayfold arrow pointing toward the jth (resp. the ith) vertex if The labels a; appearing in Table l arc the coordinates of the an_,) such that A · 8 Table 1