A Structural Characterization of Extended Correctness-Completeness in Classical Logic

In this paper I deal with first order logic and axiomatic systems. I present the metalogical results that show the property of satisfying Modus Ponens as a necessary and sufficient condition for the extended completeness of the system, and to the Deduction Metatheorem as a necessary and sufficient...

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Main Author: José Alfredo Amor
Format: Article
Language:English
Published: Universidad Nacional Autónoma de México (UNAM) 2019-01-01
Series:Crítica
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Online Access:https://critica.filosoficas.unam.mx/index.php/critica/article/view/1006
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author José Alfredo Amor
author_facet José Alfredo Amor
author_sort José Alfredo Amor
collection DOAJ
description In this paper I deal with first order logic and axiomatic systems. I present the metalogical results that show the property of satisfying Modus Ponens as a necessary and sufficient condition for the extended completeness of the system, and to the Deduction Metatheorem as a necessary and sufficient condition for the extended correctness of the system. Both supposing that the system satisfies the corresponding restricted properties. These results show that the choice of that rule of inference and of that metatheorem, for any particular axiomatic system, are not a matter of personal liking or of practical convenience, but they play a fundamental role for the extended correctness-completeness properties of the axiomatic system. As a matter of fact, they can be considered as structural properties that characterize the fulfilling of the Extended Correctness and Completeness theorem for the axiomatic system.
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spelling doaj-art-baecb93dc4514523bae8d03422ca4eaa2025-08-20T02:41:20ZengUniversidad Nacional Autónoma de México (UNAM)Crítica0011-15031870-49052019-01-013510310.22201/iifs.18704905e.2003.1006A Structural Characterization of Extended Correctness-Completeness in Classical LogicJosé Alfredo Amor0Facultad de Ciencias Universidad Nacional Autónoma de México In this paper I deal with first order logic and axiomatic systems. I present the metalogical results that show the property of satisfying Modus Ponens as a necessary and sufficient condition for the extended completeness of the system, and to the Deduction Metatheorem as a necessary and sufficient condition for the extended correctness of the system. Both supposing that the system satisfies the corresponding restricted properties. These results show that the choice of that rule of inference and of that metatheorem, for any particular axiomatic system, are not a matter of personal liking or of practical convenience, but they play a fundamental role for the extended correctness-completeness properties of the axiomatic system. As a matter of fact, they can be considered as structural properties that characterize the fulfilling of the Extended Correctness and Completeness theorem for the axiomatic system. https://critica.filosoficas.unam.mx/index.php/critica/article/view/1006logical consequenceaxiomatic systemcompactnesssemantics
spellingShingle José Alfredo Amor
A Structural Characterization of Extended Correctness-Completeness in Classical Logic
Crítica
logical consequence
axiomatic system
compactness
semantics
title A Structural Characterization of Extended Correctness-Completeness in Classical Logic
title_full A Structural Characterization of Extended Correctness-Completeness in Classical Logic
title_fullStr A Structural Characterization of Extended Correctness-Completeness in Classical Logic
title_full_unstemmed A Structural Characterization of Extended Correctness-Completeness in Classical Logic
title_short A Structural Characterization of Extended Correctness-Completeness in Classical Logic
title_sort structural characterization of extended correctness completeness in classical logic
topic logical consequence
axiomatic system
compactness
semantics
url https://critica.filosoficas.unam.mx/index.php/critica/article/view/1006
work_keys_str_mv AT josealfredoamor astructuralcharacterizationofextendedcorrectnesscompletenessinclassicallogic
AT josealfredoamor structuralcharacterizationofextendedcorrectnesscompletenessinclassicallogic