2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/216124We study numerically the late-time behaviour of the coupled Einstein Yang-Mills system. We restrict ourselves to spherical symmetry and employ Bondi-like coordinates with radial compactification. Numerical results exhibit tails with exponents close to -4 at timelike infinity $i^+$ and -2 at future null infinity \Scri.12 pages, 5 figuresGeneral Relativity and Quantum Cosmologytext