2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/97430We present an exact solution of a one-dimensional Ising chain with both nearest neighbor and random long-range interactions. Not surprisingly, the solution confirms the mean field character of the transition. This solution also predicts the finite-size scaling that we observe in numerical simulations.9 pages, 7 figures, submitted to preStatistical Mechanicstext