2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/179377We examine domain wall solutions of N=1, D=4 supergravity which preserve half of the supersymmetry and arise from Euclidean M2-brane instantons on M5-branes wrapping associative 3-cycles of G_2 holonomy manifolds. We also investigate composite solutions which break an additional half of the supersymmetry.20 pages, 5 figures, references addedHigh Energy Physics - TheoryStringy Domain Walls of N=1, D=4 Supergravitytext