𝔖 Bobbio Scriptorium
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“Everywhere” in predicate algebra and modal logic

✍ Scribed by Rutger M. Dijkstra


Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
574 KB
Volume
58
Category
Article
ISSN
0020-0190

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📜 SIMILAR VOLUMES


Normal derivability in modal logic
✍ Jan von Plato 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 89 KB

The standard rule of necessitation in systems of natural deduction for the modal logic S4 concludes A from A whenever all assumptions A depends on are modal formulas. This condition prevents the composability and normalization of derivations, and therefore modifications of the rule have been suggest