2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/211098In 3+1 dimensions there are anti-de quotients which are black holes with toroidal event horizons. By analytic continuation of the Schwarzschild-anti-de Sitter solution (and appropriate identifications) one finds two one parameter families of spacetimes that contain these quotient black holes. One of these families consists of B-metrics ("bubbles of nothing"), the other of black hole spacetimes. All of them have vanishing conserved charges.14 pages, 3 figures. References added, one explanation improvedHigh Energy Physics - Theorytext