Abstract
The thesis is: the “periodic table” of “dark matter” is equivalent to the standard Periodic
table of the visible matter once being entangled. Thus, it is to consist of all possible entangled states of
the atoms of chemical elements as quantum systems. In other words, an atom of any chemical element
and as a quantum system, i.e. as a wave function, should be represented as a non-orthogonal in general
(i.e. entangled) subspace of the separable complex Hilbert space relevant to the system to which the
atom at issue is related as a true part of it. The paper follows previous publications of mine stating that
“dark matter” and “dark energy” are projections of arbitrarily entangled states on the “cognitive
screen” of Einstein’s “Mach’s principle” in general relativity postulating that gravitational fields can
be generated only by mass or energy.