Some failures of interpolation in modal logic (Q1073010)
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scientific article; zbMATH DE number 3943780
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Some failures of interpolation in modal logic |
scientific article; zbMATH DE number 3943780 |
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Some failures of interpolation in modal logic (English)
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1986
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If a modal logic L has only one Post-complete extension and is Halldén- incomplete, then interpolation fails in L. This observation yields quick proofs of failure of interpolation in numerous familiar logics and continuum-many extensions of S4.
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Halldén-completeness
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Post-completeness
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