2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/36370We present spectral methods developed in our group to solve three-dimensional partial differential equations. The emphasis is put on equations arising from astrophysical problems in the framework of general relativity.51 pages, elsart (Elsevier Preprint), 19 PostScript figures, submitted to Journal of Computational & Applied MathematicsGeneral Relativity and Quantum CosmologyAstrophysicsComputational Physicstext