  If torsion exists, it generates gravitational four-fermion interaction
(GFFI), essential on the Planck scale. We analyze the influence of this
interaction on the Friedmann-Lemaitre-Robertson-Walker (FLRW) cosmology.
Explicit analytical solution is derived for the problem where both the
energy-momentum tensor generated by GFFI and the common ultrarelativistic
energy-momentum tensor are included. We demonstrate that gravitational
four-fermion interaction does not result in Big Bounce.
