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What ‘the number of planets is eight’ means

Rob Fraser Orcid Logo

Philosophical Studies, Volume: 172, Issue: 10, Pages: 2757 - 2775

Swansea University Author: Rob Fraser Orcid Logo

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Abstract

The following sentence is true only if numbers exist: (1) The number of planets is eight. It is true; hence, numbers exist.’ So runs a familiar argument for realism about mathematical objects. But this argument relies on a controversial semantic thesis: that ‘The number of planets’ and ‘eight’ are s...

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Published in: Philosophical Studies
ISSN: 0031-8116 1573-0883
Published: Springer Science and Business Media LLC 2015
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URI: https://cronfa.swan.ac.uk/Record/cronfa68379
Abstract: The following sentence is true only if numbers exist: (1) The number of planets is eight. It is true; hence, numbers exist.’ So runs a familiar argument for realism about mathematical objects. But this argument relies on a controversial semantic thesis: that ‘The number of planets’ and ‘eight’ are singular terms standing for the number eight, and the copula expresses identity. This is the ‘Fregean analysis’. I show that the Fregean analysis is false by providing an analysis of sentences such as (1) that best explains the available linguistic data, and according to which no terms in (1) purport to stand for numbers.
College: Faculty of Humanities and Social Sciences
Issue: 10
Start Page: 2757
End Page: 2775