Relational Syllogisms and the History of Arabic Logic, 900-1900


Relational inferences are a well-known problem for Aristotelian logic. This book charts the development of thinking about this anomaly, from the beginnings of the Arabic logical tradition in the tenth century to the end of the nineteenth. Based in large part on hitherto unstudied manuscripts and rare books, the study shows that the problem of relational inferences was vigorously debated in the thirteenth, fourteenth and fifteenth centuries. In the course of the seventeenth and eighteenth centuries, Ottoman logicians (writing in Arabic) came to recognize relational inferences as a distinct kind of 'unfamiliar syllogism' and began to investigate their logic. These findings show that the development of Arabic logic did not - as is often supposed - come to an end in the fourteenth century. On the contrary, Arabic logic was still being developed by critical and fecund reflections as late as the eighteenth and nineteenth centuries.

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Khaled El-Rouayheb, Ph.D.(2003) in Oriental Studies, University of Cambridge, is currently Assistant Professor of Islamic Intellectual History at Harvard University. He works and has published on the history of post-Avicennan Arabic logic, and, more generally, on the intellectual history of the Islamic world in the early-modern period (1500-1800).
Readers interested in Islamic intellectual history, Arabic philosophy, the history of logic, Classical philosophy, Medieval philosophy, and Ottoman, Safavid and Mughal scholarly traditions.