2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/18821The critical properties of the mixed ferro/antiferromagnetic q-state Potts model on the square lattice are investigated using the numerical transfer matrix technique. The transition temperature is found to be substantially lower than previously found for q=3. It is conjectured that there is no transition for q>3, in contradiction with previous results.7 pages, 4 figures, accepted for publication in J Phys AStatistical Mechanicstext