The polemical works of Muhammad al-Qaysi (fl.1309) and their circulation in Arabic and Aljamiado among the Mudejars in the fourteenth century

(Extrait de Res.d'A.). The present article deals with the unpublished polemical and autobiographical work Kitāb miftāh wa-'l-mujādala bayna 'l-nasāra wa-'l-muslimīn (MS No. 1557 of the National Library of Algiers) by Muhammad al-Qaysī, a religious scholar of Tunisian origin who lived as a war captive in Catalonia during the beginning of the fourteenth century. (...).