This book provides a new approach toward the end results of the General Theory of Relativity (GTR), based on the law conservation of energy, though in the broader sense of the concept of "energy", thus embodying the mass and energy equivalence of the Special Theory of Relativity (STR). Thereby, the approach was solely based on this latter theory (excluding the necessity of assuming the "principle of equivalence" of the GTR). This theorem basically says that if in a relativistic or non-relativistic quantum mechanical description, composed properly, the mass of the object at hand is multiplied by an arbitrary number, then the total energy of it, is multiplied by, and its size is divided by. This book presents data which concludes that the quantum mechanical invariance -- with respect to a mass change introduced in the original wave-like description of the object -- is the fundamental basis of a universal matter architecture (UMA), and insures the end results of the GTR.