A semantics for equational hybrid propositional type theory

The definition of identity in terms of other logical symbols is a recurrent issue in logic. In particular, in First-Order Logic (FOL) there is no way of defining the global relation of identity, while in standard Second-Order Logic (SOL) this definition is not only possible, but widely used. In this...

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Authors: Manzano Arjona, María; Martins, Manuel A.; Huertas, M. Antonia
Format: Article
Status:Published version
Publication date:2014
Country:España
Institution:Universitat Oberta de Catalunya (UOC)
Repository:O2, repositorio institucional de la UOC
OAI Identifier:oai:openaccess.uoc.edu:10609/123586
Online Access:https://hdl.handle.net/10609/123586
Access Level:Open access
Keyword:propositional type theory
first-order logic
second-order logic
equational hybrid logic
lógica de primer orden
lógica de segundo orden
teoría de tipo proposicional
lógica ecuacional híbrida
lògica de primer ordre
lògica de segon ordre
teoria de tipus proposicional
lògica equacional híbrida
Logic, Modern
Lògica moderna
Lógica moderna
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author Manzano Arjona, María
author2 Martins, Manuel A.
Huertas, M. Antonia
author2_role author
author
author_browse Huertas, M. Antonia
Manzano Arjona, María
Martins, Manuel A.
author_facet Manzano Arjona, María
Martins, Manuel A.
Huertas, M. Antonia
author_role author
collection O2, repositorio institucional de la UOC
description The definition of identity in terms of other logical symbols is a recurrent issue in logic. In particular, in First-Order Logic (FOL) there is no way of defining the global relation of identity, while in standard Second-Order Logic (SOL) this definition is not only possible, but widely used. In this paper, the reverse question is posed and affirmatively answered: Can we define with only equality and abstraction the remaining logical symbols? Our present work is developed in the context of an equational hybrid logic (i.e. a modal logic with equations as propositional atoms enlarged with the hybrid expressions: nominals and the @ operator). Our logical base is propositional type theory. We take the propositional equality, abstraction, nominals, and @ operators as primitive symbols and we demonstrate that all of the remaining logical symbols can be defined, including propositional quantifiers and equational equality.
eu_rights_str_mv openAccess
format article
id ES_ea40eadf4aec26b302beb8a76f7d28bf
institution Universitat Oberta de Catalunya (UOC)
instname_str Universitat Oberta de Catalunya (UOC)
network_acronym_str ES
network_name_str España
oai_identifier_str oai:openaccess.uoc.edu:10609/123586
publishDate 2014
publishDateSort 2014
publisher Bulletin of the Section of Logic
publisherStr Bulletin of the Section of Logic
reponame_str O2, repositorio institucional de la UOC
spelling A semantics for equational hybrid propositional type theory Manzano Arjona, María Martins, Manuel A. Huertas, M. Antonia propositional type theory first-order logic second-order logic equational hybrid logic lógica de primer orden lógica de segundo orden teoría de tipo proposicional lógica ecuacional híbrida lògica de primer ordre lògica de segon ordre teoria de tipus proposicional lògica equacional híbrida Logic, Modern Lògica moderna Lógica moderna The definition of identity in terms of other logical symbols is a recurrent issue in logic. In particular, in First-Order Logic (FOL) there is no way of defining the global relation of identity, while in standard Second-Order Logic (SOL) this definition is not only possible, but widely used. In this paper, the reverse question is posed and affirmatively answered: Can we define with only equality and abstraction the remaining logical symbols? Our present work is developed in the context of an equational hybrid logic (i.e. a modal logic with equations as propositional atoms enlarged with the hybrid expressions: nominals and the @ operator). Our logical base is propositional type theory. We take the propositional equality, abstraction, nominals, and @ operators as primitive symbols and we demonstrate that all of the remaining logical symbols can be defined, including propositional quantifiers and equational equality. Bulletin of the Section of Logic https://hdl.handle.net/10609/123586
spellingShingle A semantics for equational hybrid propositional type theory
Manzano Arjona, María
propositional type theory
first-order logic
second-order logic
equational hybrid logic
lógica de primer orden
lógica de segundo orden
teoría de tipo proposicional
lógica ecuacional híbrida
lògica de primer ordre
lògica de segon ordre
teoria de tipus proposicional
lògica equacional híbrida
Logic, Modern
Lògica moderna
Lógica moderna
status_str publishedVersion
title A semantics for equational hybrid propositional type theory
title_full A semantics for equational hybrid propositional type theory
title_fullStr A semantics for equational hybrid propositional type theory
title_full_unstemmed A semantics for equational hybrid propositional type theory
title_short A semantics for equational hybrid propositional type theory
title_sort A semantics for equational hybrid propositional type theory
topic propositional type theory
first-order logic
second-order logic
equational hybrid logic
lógica de primer orden
lógica de segundo orden
teoría de tipo proposicional
lógica ecuacional híbrida
lògica de primer ordre
lògica de segon ordre
teoria de tipus proposicional
lògica equacional híbrida
Logic, Modern
Lògica moderna
Lógica moderna
topic_facet propositional type theory
first-order logic
second-order logic
equational hybrid logic
lógica de primer orden
lógica de segundo orden
teoría de tipo proposicional
lógica ecuacional híbrida
lògica de primer ordre
lògica de segon ordre
teoria de tipus proposicional
lògica equacional híbrida
Logic, Modern
Lògica moderna
Lógica moderna
url https://hdl.handle.net/10609/123586