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Quasi-Truth as Truth of a Ramsey Sentence

Lutz, Sebastian (2011) Quasi-Truth as Truth of a Ramsey Sentence. [Preprint]

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    Abstract

    I show the quasi-truth of a sentence in a partial structure to be equivalent to the truth of a specific Ramsey sentence in a structure that corresponds naturally to the partial structure. Hence quasi-truth, the core notion of the partial structures approach, can be captured in the terms of the received view on scientific theories as developed by Carnap and Hempel. I further show that a mapping is a partial homomorphism/isomorphism between two partial structures if and only if it is a homomorphism/isomorphism between their corresponding structures. It is a corollary that the partial structures approach can be expressed in first or second order model theory.


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    Item Type: Preprint
    Keywords: partial structure; quasi-truth; pragmatic truth; partial truth; subtruth; partial homomorphism; partial isomorphism; model theory; expansion; Ramsey sentence; received view; logical empiricism
    Subjects: General Issues > Logical Positivism/Logical Empiricism
    General Issues > Structure of Theories
    Depositing User: Sebastian Lutz
    Date Deposited: 22 Aug 2011 07:02
    Last Modified: 22 Aug 2011 07:02
    Item ID: 8758
    URI: http://philsci-archive.pitt.edu/id/eprint/8758

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