2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/113274The Friedman equation is solved for a universe contains hotdark matter and cold dark matter. In this scenario, hot-dark matter drives an accelerating universe no cold dark matter.Published in Proceedings of the 13th Young Scientists' Conference on Astronomy and Space Physics, held in Kyiv, Ukraine, April 25-29, 2006, Eds.: Golovin, A.; Ivashchenko, G.; Simon, A., Kyiv University PressAstrophysicstext