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arXiv · 2601.11221

Craig Interpolation for Subgeometric Logics

Ivan Di Liberti·Lingyuan Ye
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Abstract

We show that a vast class of finitary fragments of geometric logic admit a form of Craig interpolation property. In doing so, we provide a new dictionary to import technology from algebraic logic to categorical logic.

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Ivan Di Liberti, Lingyuan Ye. 2026-01-16. Craig Interpolation for Subgeometric Logics. https://arxiv.org/abs/2601.11221

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