2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/171149Let g=g_0+ g_1 be a simple Z_2-graded Lie algebra and let b_0 be a fixed Borel subalgebra of g_0. We describe and enumerate the abelian b_0-stable subalgebras of g_1.21 pages, amstex file. Minor corrections. Introduction slightly expanded. To appear in IMRNRepresentation Theorytext