2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/73794For all complex dimensions n>=2, we construct complete Kaehler manifolds of bounded curvature and non-negative Ricci curvature whose Kaehler--Ricci evolutions immediately acquire Ricci curvature of mixed sign.Added generalization to all complex dimensions n>=2. (9 pages)Differential Geometry53C44Positivity of Ricci curvature under the Kähler--Ricci flowtext