2025/12/17 by van Gool, Sam
#03-02 (Primary) 03B20 03B45 03C10 03G27 03G30 06D20 (Secondary) #F.4.1 #FOS: Computer and information sciences #FOS: Mathematics #I.2.4 #Logic (math.LO) #Logic in Computer Science (cs.LO)
paper · doi:10.48550/arxiv.2512.15391
Uniform interpolation is a strengthening of interpolation that holds for certain propositional logics. The starting point of this chapter is a theorem of A. Pitts, which shows that uniform interpolation holds for intuitionistic propositional logic. We outline how this theorem may be proved semantically via the definability of bisimulation quantifiers, and how it generalizes to an open mapping theorem between Esakia spaces. We also discuss connections between uniform interpolation and research in categorical logic, algebra, and model theory.