2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/54876We review a method of construction of exceptional graphs generalising the ADE Dynkin diagrams which encode the spectrum of conformal field theories described by conformal embeddings of $\widehat{sl}(n)_k$.Plain Tex, 7 pages; 2 figures. Talk given at the 21st International Colloquium on Group Theoretical Methods in Physics, Goslar, Germany, 15-20 July 1996High Energy Physics - Theorytext