2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/60191We introduce the concept of weight graph for the weight system $P\frak{g}(T)$ of a finite dimensional nilpotent Lie algebra $\frak{g}$ and analyze the necessary conditions for a $(p,q)$-graph to be a weight graph for some $\frak{g}$.7 pagesRings and Algebras17B30, 05C90text