2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/178494Expansion of the two-component universe with arbitrary spatial curvature has been considered. It has been shown that the Friedmann integrals of the almost flat universe do not coincide.2 pages, LaTeX2e, 1 eps figure, to appear in Astronomy LettersAstrophysicsGeneral Relativity and Quantum Cosmologytext