Two stability criteria for constrained phases of multi-colour Ising models: exactly six strictly closed supports at every colour count
Version 2 withdraws a claim made in version 1. Version 1 of this note asserted that the complete four-colour Ashkin-Teller study (10.5281/zenodo.22832697) had drawn an incorrect inference about its C1 and C3 phases, and a correction to that effect was attached to that record. That assertion was wrong and is withdrawn i...