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Peter of Spain
(149 words)

[German Version]

(or Peter of Portugal; 13th cent.). Long identified with Pope John XXI, the author of the widely disseminated Summulae logicales (c. 1240) is now recognized as a different person. His treatise on dialectics expanded the logica vetus, based on Porphyry together with Aristotle’s work on categories and his De interpretatione, and the logica nova, which included Aristotle’s Analytica and Elenchi sophistici together with the topics and syllogistics of Boethius, by adding the logica modernorum, the terministic logic that discusses the properties of terms, es…

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Rieger, Reinhold, “Peter of Spain”, in: Religion Past and Present. Consulted online on 26 November 2020 <http://dx.doi.org/10.1163/1877-5888_rpp_SIM_024483>
First published online: 2011
First print edition: ISBN: 9789004146662, 2006-2013



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