Evolution of a homogeneous isotropic universe, dark matter, and the absence of monopoles

It is shown, that the field theory of Gravity bring to the unique way of homogeneous isotropic Universe evolution: Universe pulses in time (with half-period $3.75\cdot 10^{10}$ years) between states with maximal ($\simeq 10^{67}$ g/cm${}^3$) and minimal ($\simeq 1.25\cdot 10^{-30}$ g/cm${}^3$) density of substance. Dark mass is found to be 25 times larger than the visible one. Maximal temperature corresponding to maximal substance density ($\sim 10^{12}$ Gev) turns out to be insufficient to open a channel of monopoles birth (in Grand Unification Theory).