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  1. Khaled El-Rouayheb (2012). Post-Avicennan Logicians on the Subject Matter of Logic: Some Thirteenth- and Fourteenth-Century Discussions. Arabic Sciences and Philosophy 22 (1):69-90.
    Research Articles Khaled El-Rouayheb, Arabic Sciences and Philosophy, FirstView Article.
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  2. Khaled El-Rouayheb (2011). Logic in the Arabic and Islamic World. In H. Lagerlund (ed.), Encyclopedia of Medieval Philosophy. Springer 686--692.
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  3. Khaled El-Rouayheb (2010). Relational Syllogisms and the History of Arabic Logic, 900-1900. Brill.
    Relational inferences are a well-known problem for Aristotelian logic. This book charts the development of thinking about this problem by logicians writing in Arabic from the ninth to the nineteenth century. It shows that that the development of Arabic logic did not - as is often supposed - come to an end in the fourteenth century.
     
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  4. Khaled El-Rouayheb (2009). Impossible Antecedents and Their Consequences: Some Thirteenth-Century Arabic Discussions. History and Philosophy of Logic 30 (3):209-225.
    The principle that a necessarily false proposition implies any proposition, and that a necessarily true proposition is implied by any proposition, was apparently first propounded in twelfth century Latin logic, and came to be widely, though not universally, accepted in the fourteenth century. These principles seem never to have been accepted, or even seriously entertained, by Arabic logicians. In the present study, I explore some thirteenth century Arabic discussions of conditionals with impossible antecedents. The Persian-born scholar Afdal al-Dīn al-Kh najī (...)
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