Wittgenstein and concept‐extension in mathematics

I begin by attempting to get a perspicuous overview of what Wittgenstein means by saying that a mathematical proof forms concepts. I then distinguish these sorts of cases from those we might call concept‐extending proofs, which, rather than introducing new concepts, function to enrich those concepts...

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Published inPhilosophical investigations Vol. 48; no. 3; pp. 333 - 348
Main Author Wheeler, Samuel J.
Format Journal Article
LanguageEnglish
Published Oxford Wiley Subscription Services, Inc 01.07.2025
Online AccessGet full text
ISSN0190-0536
1467-9205
1467-9205
DOI10.1111/phin.12457

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Abstract I begin by attempting to get a perspicuous overview of what Wittgenstein means by saying that a mathematical proof forms concepts. I then distinguish these sorts of cases from those we might call concept‐extending proofs, which, rather than introducing new concepts, function to enrich those concepts that have already been given a home in our mathematical practice. At the same time, I also want to argue that the line between these two sorts of proofs is not always clear and will sometimes be blurred. I go on to compare paradigmatic examples of each, concluding with a case in which it is not immediately clear whether we ought to all the proof concept‐forming or extending. This last section includes a discussion of Sorin Bangu's recent account of Wittgenstein on mathematical proof.
AbstractList I begin by attempting to get a perspicuous overview of what Wittgenstein means by saying that a mathematical proof forms concepts. I then distinguish these sorts of cases from those we might call concept‐extending proofs, which, rather than introducing new concepts, function to enrich those concepts that have already been given a home in our mathematical practice. At the same time, I also want to argue that the line between these two sorts of proofs is not always clear and will sometimes be blurred. I go on to compare paradigmatic examples of each, concluding with a case in which it is not immediately clear whether we ought to all the proof concept‐forming or extending. This last section includes a discussion of Sorin Bangu's recent account of Wittgenstein on mathematical proof.
Author Wheeler, Samuel J.
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Cites_doi 10.1111/phin.12379
10.1007/978-3-030-48481-1
10.4324/9781003056904
10.1111/phin.12413
10.1093/pq/pqad111
10.1111/1467-9205.00144
10.1111/phin.12335
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2025. This work is published under Creative Commons Attribution License~https://creativecommons.org/licenses/by/3.0/ (the "License"). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.
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