Inference rules with metavariables and logical equations in the pretabular modal logic PM1 (Q5932613)
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scientific article; zbMATH DE number 1603249
| Language | Label | Description | Also known as |
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| English | Inference rules with metavariables and logical equations in the pretabular modal logic PM1 |
scientific article; zbMATH DE number 1603249 |
Statements
Inference rules with metavariables and logical equations in the pretabular modal logic PM1 (English)
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10 June 2001
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It is known that there exist only 5 pretabular extensions (P1--P5) of the logic S4 [see \textit{L. L. Maksimova}, Algebra Logic 14, No. 1, 16-33 (1975); translation from Algebra Logika 14, No. 1, 28-55 (1975; Zbl 0319.02019)]. The author establishes an admissibility criterion for inference rules with metavariables for the logic PM1.
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modal logic
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inference rule
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admissible reference rule
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