ChatGPT 5.6 Assists in Solving Long-Standing Open Problem in Intuitionistic Logic

gleech · x · 2026-08-29

A new arXiv paper claims to resolve a long-standing open problem in category theory: whether all Heyting algebras can appear as the lattice of subterminal objects of an elementary topos. The authors provide a negative answer, proving that the free Heyting algebra on two generators does not satisfy this condition. Notably, the paper states that the mathematical results were obtained with the assistance of ChatGPT 5.6 Sol.

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