Diagrams in the Arabic Euclidean tradition: a preliminary assessment

AbstractRecently, we have discovered some geometrical diagrams attributed to al-Ḣajjāj. These diagrams offer us new insight into the Arabic transmission of the Elements of Euclid. From an analysis of both Arabic and Latin texts, we find indirect evidence concerning the existence of a tradition of Ḣajjāj diagrams. This tradition, taken together with other textual features, helps to reveal the influence of al-Ḣajjāj, even though the transmission of his translation has become contaminated with other Arabic traditions