2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/116281Using an orbifold description of the Euclidean BTZ black hole, we show that there is a special relation between the spectrum and the truncated heat kernel of this black hole with the Patterson-Selberg zeta function.9 pages, no figures, revised version to be published in the Lett. Math. PhysHigh Energy Physics - Theorytext