2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/51484We give central elements of the Yang-Baxter algebra for the $R$-matrix of the eight-vertex model, in the case when the crossing parameter is a rational multiple of one of the periods.6 pages,LaTeX,added acknowledgmentsHigh Energy Physics - TheoryCentral elements of the elliptic Yang--Baxter algebra at roots of unitytext