2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/34538In this paper a hypothesis is considered, in which neutrinos and other weakly interacting particles play a fundamental role in Universe. In addition the Newton gravitational constant $G_N$ and the Hubble constant $H$ are interpreted as parameters, characterizing the neutrinos background of Universe.plain tex, 7 pagesGeneral Relativity and Quantum Cosmologytext