New Modification of the Subformula Property for a Modal Logic
A modified subformula property for the modal logic KD with the additional axiom □ ◊(A ∨ B) ⊃ □ ◊ A ∨ □ ◊B is shown. A new modification of the notion of subformula is proposed for this purpose. This modification forms a natural extension of our former one on which modified subformula property for the...
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| Format: | Article |
| Language: | English |
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Lodz University Press
2020-11-01
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| Series: | Bulletin of the Section of Logic |
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| Online Access: | https://czasopisma.uni.lodz.pl/bulletin/article/view/6148 |