Hyperintensionality in Relevant Logics

In Natasha Alechina, Andreas Herzig & Fei Liang, Logic, Rationality, and Interaction: 9th International Workshop, LORI 2023, Jinan, China, October 26–29, 2023, Proceedings. Springer Nature Switzerland. pp. 238-250 (2023)
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Abstract

In this article, we present a definition of a hyperintensionality appropriate to relevant logics. We then show that relevant logics are hyperintensional in this sense, drawing consequences for other non-classical logics, including HYPE and some substructural logics. We further prove results concerning extensionality in relevant logics. We close by discussing related concepts for classifying formula contexts and potential applications of these results.

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Shawn Standefer
National Taiwan University

Citations of this work

Epistemic Logics for Relevant Reasoners.Igor Sedlár & Pietro Vigiani - 2024 - Journal of Philosophical Logic 53 (5):1383-1411.

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References found in this work

The Connectives.Lloyd Humberstone - 2011 - MIT Press. Edited by Lloyd Humberstone.
Hyperintensional metaphysics.Daniel Nolan - 2014 - Philosophical Studies 171 (1):149-160.
The Logic of Provability.George Boolos - 1993 - Cambridge and New York: Cambridge University Press.
HYPE: A System of Hyperintensional Logic.Hannes Leitgeb - 2019 - Journal of Philosophical Logic 48 (2):305-405.
Varieties of Relevant S5.Shawn Standefer - 2023 - Logic and Logical Philosophy 32 (1):53–80.

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