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☐ and ◇ in eight-valued non-deterministic semantics for modal logics
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A Gödel-Dugundji-style theorem for the minimal structural logic
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- Journal Article
- A1
- open access
There are no minimal essentially undecidable theories
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Modular non-deterministic semantics for T, TB, S4, S5 and more
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- Journal Article
- A1
- open access
Arithmetical and hyperarithmetical worm battles
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- Journal Article
- A1
- open access
Noetherian Gödel logics
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Classical term-modal logics
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Feedback hyperjump
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Multi-dimensional interpretations of Presburger arithmetic in itself
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Coarse deontic logic