2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/109864Numerical Relativity has been using orbifolds for a long time, although they appear under different names in the literature. We review orbifolds previously used in simulations also discuss some that have not been used yet but are likely to be useful in the future.11 pages; references addedGeneral Relativity and Quantum Cosmologytext