Mechanised uniform interpolation for modal logics K, GL, and iSL
The uniform interpolation property in a given logic can be understood as the definability of propositional quantifiers. We mechanise the computation of these quantifiers and prove correctness in the Coq proof assistant for three modal logics, namely: (1) the modal logic K, for which a pen-and-paper...
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| Main Authors | , , , |
|---|---|
| Format | Journal Article |
| Language | English |
| Published |
16.02.2024
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| Subjects | |
| Online Access | Get full text |
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| Abstract | The uniform interpolation property in a given logic can be understood as the
definability of propositional quantifiers. We mechanise the computation of
these quantifiers and prove correctness in the Coq proof assistant for three
modal logics, namely: (1) the modal logic K, for which a pen-and-paper proof
exists; (2) G\"odel-L\"ob logic GL, for which our formalisation clarifies an
important point in an existing, but incomplete, sequent-style proof; and (3)
intuitionistic strong L\"ob logic iSL, for which this is the first
proof-theoretic construction of uniform interpolants. Our work also yields
verified programs that allow one to compute the propositional quantifiers on
any formula in this logic. |
|---|---|
| AbstractList | The uniform interpolation property in a given logic can be understood as the
definability of propositional quantifiers. We mechanise the computation of
these quantifiers and prove correctness in the Coq proof assistant for three
modal logics, namely: (1) the modal logic K, for which a pen-and-paper proof
exists; (2) G\"odel-L\"ob logic GL, for which our formalisation clarifies an
important point in an existing, but incomplete, sequent-style proof; and (3)
intuitionistic strong L\"ob logic iSL, for which this is the first
proof-theoretic construction of uniform interpolants. Our work also yields
verified programs that allow one to compute the propositional quantifiers on
any formula in this logic. |
| Author | Shillito, Ian Férée, Hugo van der Giessen, Iris van Gool, Sam |
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| BackLink | https://doi.org/10.48550/arXiv.2402.10494$$DView paper in arXiv |
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| Snippet | The uniform interpolation property in a given logic can be understood as the
definability of propositional quantifiers. We mechanise the computation of
these... |
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| SubjectTerms | Computer Science - Logic in Computer Science Mathematics - Logic |
| Title | Mechanised uniform interpolation for modal logics K, GL, and iSL |
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