2008
DOI: 10.1007/s11083-008-9094-4
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Continuous Fraïssé Conjecture

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Cited by 16 publications
(14 citation statements)
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“…It is known that there are continuum-many different propositional consequence relations and continuum-many different propositional quantified Gödel logics [10]. In forthcoming work [13], it is shown that there are only countably many first-order Gödel logics (considered as sets of valid formulas). Although this result goes some way toward clarifying the situation, a criterion of identity of Gödel logics using some topological property of the underlying truth value set is a desideratum.…”
Section: Resultsmentioning
confidence: 97%
See 1 more Smart Citation
“…It is known that there are continuum-many different propositional consequence relations and continuum-many different propositional quantified Gödel logics [10]. In forthcoming work [13], it is shown that there are only countably many first-order Gödel logics (considered as sets of valid formulas). Although this result goes some way toward clarifying the situation, a criterion of identity of Gödel logics using some topological property of the underlying truth value set is a desideratum.…”
Section: Resultsmentioning
confidence: 97%
“…The following simpler proof is inspired by [13]: Proof. If: Every countable non-trivial dense linear order has order type η, 1+η, η +1, or 1+η +1 [25, Corollary 2.9], where η is the order type of Q.…”
Section: Relation To Gödel Logicsmentioning
confidence: 99%
“…However, if we speak of validity and satisfiability in parallel, this representation is useless and we therefore have to refer to the truth-value sets. This is unfortunate, as uncountably many different Gödel logics with respect to truth-value sets correspond to countably many sets of valid sentences (Beckmann et al 2008). The following problem is a particular instance of this phenomenon.…”
Section: Problem 9 Is There a Gödel Logic That Is Undecidable When Rementioning
confidence: 99%
“…In fact there are infinitely many different infinite-valued first-order Gödel logics, according to [4]. The conjecture that there are just countable many different Gödel logics has recently been settled in [5]. G [0,1] and G [0,1] are well known to be recursively axiomatizable, see, e.g., [11].…”
Section: Introductionmentioning
confidence: 99%