Logic and Intensionality

Logic and Intensionality

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There are different ways we use the expressions “extension” and “intension”. I specify in the first part of this paper two basic senses of this distinction, and try to show that the old metaphysical sense, by means of particular instance vs. universal, is more fundamental than the contemporary sense...

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Bibliographic Details
Main Author: Guido Imaguire
Format: Article
Language:English
Published: Universidade Federal de Santa Catarina 2010-01-01
Series:Principia: An International Journal of Epistemology
Subjects:
extensão
intensão
conseqüência lógica.
Online Access:https://periodicos.ufsc.br/index.php/principia/article/view/19666
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spelling doaj-6c3518fb13fd4db0a055f7b687580e1b2020-11-25T00:44:53ZengUniversidade Federal de Santa CatarinaPrincipia: An International Journal of Epistemology1414-42471808-17112010-01-011411112410.5007/1808-1711.2010v14n1p11115172Logic and IntensionalityGuido Imaguire0Universidade Federal do Rio de Janeiro (UFRJ)There are different ways we use the expressions “extension” and “intension”. I specify in the first part of this paper two basic senses of this distinction, and try to show that the old metaphysical sense, by means of particular instance vs. universal, is more fundamental than the contemporary sense by means of substitutivity. In the second part, I argue that logic in general is essentially intensional, not only because logic is a rule-guided activity, but because even the extensional definition of a logic system presupposes an intensional notion of logical consequence.https://periodicos.ufsc.br/index.php/principia/article/view/19666extensãointensãoconseqüência lógica.
collection DOAJ
language English
format Article
sources DOAJ
author Guido Imaguire
spellingShingle Guido Imaguire
Logic and Intensionality
Principia: An International Journal of Epistemology
extensão
intensão
conseqüência lógica.
author_facet Guido Imaguire
author_sort Guido Imaguire
title Logic and Intensionality
title_short Logic and Intensionality
title_full Logic and Intensionality
title_fullStr Logic and Intensionality
title_full_unstemmed Logic and Intensionality
title_sort logic and intensionality
publisher Universidade Federal de Santa Catarina
series Principia: An International Journal of Epistemology
issn 1414-4247
1808-1711
publishDate 2010-01-01
description There are different ways we use the expressions “extension” and “intension”. I specify in the first part of this paper two basic senses of this distinction, and try to show that the old metaphysical sense, by means of particular instance vs. universal, is more fundamental than the contemporary sense by means of substitutivity. In the second part, I argue that logic in general is essentially intensional, not only because logic is a rule-guided activity, but because even the extensional definition of a logic system presupposes an intensional notion of logical consequence.
topic extensão
intensão
conseqüência lógica.
url https://periodicos.ufsc.br/index.php/principia/article/view/19666
work_keys_str_mv AT guidoimaguire logicandintensionality
_version_ 1725272691703808000

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