2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/26220With up to 7 million spins, the existence of spontaneous magnetization of Ising spins on directed Barabasi-Albert networks is investigated by Monte Carlo simulations. We confirm our earlier result that the magnetization for different temperatures T decays after a characteristic time tau(T), which we extrapolate to diverge at zero temperature by a modified Arrhenius law,or perhaps a power law.Islamic University Conference, Gaza, March 2005; for the university MagazineDisordered Systems and Neural Networkstext