  It is necessary for the statistical description of collective effects in
liquids to set that or other approximation between direct and pair correlation
functions which describe a neighboring order. The analytical solution of the
generalized Ornstein-Zernike (OZ) equation was obtained for a system of
particles at T=0. It is shown that in this limit case the neighboring order
disappears and the direct correlation function describes a distant order which
is typical for the ideal crystal. The approximation correctly describing the
limit transition liquid-solid at T=0 will have a physical meaning.
