2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/189803The correspondence between domain-wall and cosmological solutions of gravity coupled to scalar fields is explained. Any domain wall solution that admits a Killing spinor is shown to correspond to a cosmology that admits a pseudo-Killing spinor: whereas the Killing spinor obeys a Dirac-type equation with hermitian `mass'-matrix, the corresponding pseudo-Killing spinor obeys a Dirac-type equation with a anti-hermitian `mass'-matrix. We comment on some implications of (pseudo)supersymmetry.11 pages, contribution to the proceedings of IRGAC 2006;v3: minor changesHigh Energy Physics - Theorytext