2015
DOI: 10.1016/j.apal.2014.10.002
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First order S4 and its measure-theoretic semantics

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Cited by 6 publications
(5 citation statements)
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“…The following lemma is proved in Lando (2015) and provides the key ingredient in the proof of our main result. 17 LEMMA 5.2.…”
Section: A Is Open In a 1 If And Only If H(a) Is Open Inmentioning
confidence: 96%
See 1 more Smart Citation
“…The following lemma is proved in Lando (2015) and provides the key ingredient in the proof of our main result. 17 LEMMA 5.2.…”
Section: A Is Open In a 1 If And Only If H(a) Is Open Inmentioning
confidence: 96%
“…The present paper brings together this recent work on general topological spaces with work carried out in Lando (2015) on the measure semantics for modal logics. In the measure semantics, instead of interpreting modal formulas in topological spaces, we interpret them in the Lebesgue measure algebra, M, or algebra of Borel subsets of the real interval [0,1], modulo sets of measure zero.…”
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confidence: 99%
“…I am grateful to Henno Brandsma for pointing this out to me. 6 From early on, Cantor space has figured prominently in QH completeness results: [20] (page 423, footnote 1) cites a annoucement by Beth, in a 1957 colloquium in Amsterdam, that QH is complete for the family of closed subspaces of C. 7 [1] presents a sheaf semantics, and [12] presents a closely related varying-domain topological semantics, for first-order S4 with identity. In this table, Q is the rational line, R the real line, and P the irrational line.…”
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confidence: 99%
“…where P is a unary predicate. 12 The proof of Theorem 3.4 in [10] can be adapted to show that A ∈ QH and that X, D A for any locally connected space X and any constant domain D. [21] provides two slightly simpler examples: ∀x(Px ∨ ∼Px) → (∀xPx ∨ ∃x∼Px) (Exercise 8.22) and Markov's principle ∀x(Px ∨ ∼Px) & ∼∼∃xPx → ∃xPx (Exercise 8.23). §4.…”
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confidence: 99%
“…De fato, com esta construção, consigo uma estrutura canônica (topológica) que interpreta uma linguagem modal quantificada (de primeira ordem), no qual posso repetir o estudo de propriedades topológicas locais, como realizado no modelo topo S4-canônico. Embora há publicações recentes estudando a completude da lógica FOS4 em relação a diversos tipos de estruturas determinadas -ver (KREMER, 2014) ou (LANDO, 2014), exibo neste capítulo a construção do modelo canônico para FOS4.…”
Section: Introductionunclassified