  This work was originally published by the author in 1999 in a book [1] and
later became part of the author's doctoral thesis in 1999 [2]. Since the
original language of these works is not English, the author provides a
translation of the key ideas of these publications in this work. In addition,
the chapter related to numerical experiments was recalculated on modern
computers and using contemporary benchmark datasets.
  This article presents a novel approach to solving Hartree-Fock equations
using Toeplitz and tensor matrices and bases based on regular finite elements.
The issues discussed include the choice of basis, the dependence of data volume
and number of arithmetic operations on the number of basis functions, as well
as the arithmetic complexity and accuracy of computing two- and four-center
integrals. The approach has been implemented in a software package, and results
have been obtained that are in good agreement with theory.
