2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/167590It is shown that the Poincare group which is a semidirect product of the group of translations and the Lorentz group, is not a single physicaly important group of proper motions of Minkowski metric. The complementary group of proper motions of the metric in a class of noninertial reference system has been found.General Relativity and Quantum Cosmologytext