Journal of Philosophical Logic 35 (3):317-348 (2006)

Authors
Timothy Smiley
Cambridge University
Abstract
We present a plural logic that is as expressively strong as it can be without sacrificing axiomatisability, axiomatise it, and use it to chart the expressive limits set by axiomatisability. To the standard apparatus of quantification using singular variables our object-language adds plural variables, a predicate expressing inclusion (is/are/is one of/are among), and a plural definite description operator. Axiomatisability demands that plural variables only occur free, but they have a surprisingly important role. Plural description is not eliminable in favour of quantification; on the contrary, quantification is definable in terms of it. Predicates and functors (function signs) can take plural as well as singular terms as arguments, and both many-valued and single-valued functions are expressible. The system accommodates collective as well as distributive predicates, and the condition for a predicate to be distributive is definable within it; similarly for functors. An essential part of the project is to demonstrate the soundness and completeness of the calculus with respect to a semantics that does without set-theoretic domains and in which the use of settheoretic extensions of predicates and functors is replaced by the sui generis relations and functions for which the extensions were at best artificial surrogates. Our metalanguage is designed to solve the difficulties involved in talking plurally about individuals and about the semantic values of plural items
Keywords Alibi principle  all-in-one principle  axiomatisability  collective  completeness proof  co-partial function  distributive  functor  inclusion  many-valued function  plural description  plural logic  plural variable  quasi-classical
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DOI 10.1007/s10992-005-9019-2
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References found in this work BETA

Descriptions.Stephen Neale - 1990 - MIT Press.
Logic, Logic and Logic.George Boolos - 1998 - Harvard University Press.

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Citations of this work BETA

Mass Nouns and Plurals.Peter Lasersohn - 2011 - In Claudia Maienborn, Klaus von Heusinger & Paul Portner (eds.), Semantics: An International Handbook of Natural Language Meaning. De Gruyter Mouton. pp. 2.
Monism, Emergence, and Plural Logic.Einar Duenger Bohn - 2012 - Erkenntnis 76 (2):211-223.
Mass Nouns and Plural Logic.David Nicolas - 2008 - Linguistics and Philosophy 31 (2):211-244.

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