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  1. Al-Ḫūnaǧī on essentialist and externalist propositions and inferences from the impossible.Behnam Zolghadr - forthcoming - Inquiry: An Interdisciplinary Journal of Philosophy.
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  • Existential import in avicenna's modal logic.Saloua Chatti - 2016 - Arabic Sciences and Philosophy 26 (1):45-71.
    RésuméDans cet article, je pose le problème suivant: quelles propositions ont un import dans la logique modale d'Avicenne? Lesquelles n'en ont pas? Partant de l'assomption que les propositions singulières et quantifiées ont un import si elles requièrent l'existence de leur sujet pour être vraies, j'analyse d'abord l'import des propositions absolues, ensuite celui des propositions modales en tenant compte des définitions d'Avicenne et des relations entre ces propositions. Cette analyse conduit aux résultats suivants: Avicenne défend l'opinion générale selon laquelle les affirmatives, (...)
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  • Three Conceptions of Formal Logic.Thom Paul - 2010 - Vivarium 48 (1-2):228-242.
    Aristotle's logical and metaphysical works contain elements of three distinct types of formal theory: an ontology, a theory of consequences, and a theory of reasoning. His formal ontology (unlike that of certain later thinkers) does not require all propositions of a given logical form to be true. His formal syllogistic (unlike medieval theories of consequences) was guided primarily by a conception of logic as a theory of reasoning; and his fragmentary theory of consequences exists merely as an adjunct to the (...)
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  • Fārābī and Avicenna on Contraposition.Asadollah Fallahi - 2018 - History and Philosophy of Logic 40 (1):22-41.
    The rule of contraposition has been investigated thoroughly by Arabic logicians. In this paper, we study the work done by Fārābā and Avicenna, the fathers of Arabic logic. Fārābā studied contraposition of universal affirmatives, discussed its four forms, and discovered a relation between one form and the conversion of negative universals. Although Fārābā and logicians before him have used contraposition only for conditionals, as well as for indefinite and universal affirmative categorical propositions, Avicenna generalized the rule to all the four (...)
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  • Arabic and islamic philosophy of language and logic.Tony Street - 2008 - Stanford Encyclopedia of Philosophy.
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