Studia Logica 43 (1-2):107 - 116 (1984)

Authors
Chris Mortensen
University of Adelaide
Abstract
A typical theorem of conaexive logics is Aristotle''s Thesis(A), (AA).A cannot be added to classical logic without producing a trivial (Post-inconsistent) logic, so connexive logics typically give up one or more of the classical properties of conjunction, e.g.(A & B)A, and are thereby able to achieve not only nontriviality, but also (negation) consistency. To date, semantical modellings forA have been unintuitive. One task of this paper is to give a more intuitive modelling forA in consistent logics. In addition, while inconsistent but nontrivial theories, and inconsistent nontrivial logics employing prepositional constants (for which the rule of uniform substitution US fails), have both been studied extensively within the paraconsistent programme, inconsistent nontrivial logics (closed under US) do not seem to have been. This paper gives sufficient conditions for a logic containingA to be inconsistent, and then shows that there is a class of inconsistent nontrivial logics all containingA. A second semantical modelling forA in such logics is given. Finally, some informal remarks about the kind of modellingA seems to require are made.
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DOI 10.1007/BF00935744
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References found in this work BETA

Connexive Implication.Storrs Mccall - 1966 - Journal of Symbolic Logic 31 (3):415-433.
A Propositional Logic with Subjunctive Conditionals.R. B. Angell - 1962 - Journal of Symbolic Logic 27 (3):327-343.
Entailment. Vol. 1.Alan Ross Anderson & Nuel D. Belnap - 1977 - Canadian Journal of Philosophy 7 (2):405-411.
On Systems Containing Aristotle's Thesis.R. Routley & H. Montgomery - 1968 - Journal of Symbolic Logic 33 (1):82-96.

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Citations of this work BETA

Connexive Extensions of Regular Conditional Logic.Yale Weiss - 2019 - Logic and Logical Philosophy 28 (3):611-627.
Contra-Classical Logics.Lloyd Humberstone - 2000 - Australasian Journal of Philosophy 78 (4):438 – 474.
Aristotle’s Theory of Deduction and Paraconsistency.Evandro Luís Gomes & Itala M. Loffredo D'Ottaviano - 2010 - Principia: An International Journal of Epistemology 14 (1):71-97.

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