Diagrams in the Arabic Euclidean tradition: a preliminary assessment (Q558070)

There are two main sources for the study of Euclid in Arabic, the translations of al Ḥajjāj and of Iṣḥaq ibn Ḥunayn and Thābit ibn Qurra, respectively. Neither of these translations has come to us in its original form, but the Iṣḥaq/Thābit tradition is the dominant one. The author has discovered a Princeton ms. of al-Ṭūsī's redaction of the Elements (based on the Iṣḥaq/Thābit tradition) which contains diagrams explicitly ascribed to al Ḥajjāj. It is therefore possible to begin a study of the characteristics which distinguish the diagrams of the two traditions.