  Bulk and single-particle properties of hot hyperonic matter are studied
within the Brueckner-Hartree-Fock approximation extended to finite temperature.
The bare interaction in the nucleon sector is the Argonne V18 potential
supplemented with an effective three-body force to reproduce the saturating
properties of nuclear matter. The modern Nijmegen NSC97e potential is employed
for the hyperon-nucleon and hyperon-hyperon interactions. The effect of the
temperature on the in-medium effective interaction is found to be, in general,
very small and the single-particle potentials differ by at most 25% for
temperatures in the range from 0 to 60 MeV. The bulk properties of infinite
matter of baryons, either nuclear isospin symmetric or a beta-stable
composition which includes a non-zero fraction of hyperons, are obtained. It is
found that the presence of hyperons can modify the thermodynamical properties
of the system in a non-negligible way.
