2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/149741Analysis is presented of a system whose dynamics are dramatically simplified by tiny amounts of additive noise. The dynamics divide naturally into two phases. In the slower phase, trajectories are close to an invariant manifold; this allows small random disturbances to exert a controlling influence. A map is derived which provides an accurate description of the trajectories.Plain Tex, 7 pages, 2 postscript figures includedAdaptation and Self-Organizing SystemsChaotic Dynamicstext