Maḥmūd al-Jaghmīnī (d. c. 618/1221-2) composed multiple scientific works in Arabic in the late sixth/twelfth and early seventh/thirteenth centuries under the auspices of the Khwārazmshāhs in Central Asia. Two of his compositions became popular textbooks: an introduction to Ptolemaic theoretical astronomy (al-Mulakhkhaṣ fī ʿilm al-hayʾa al-basīṭa); and his medical treatise al-Qānūnča, an abridgement of Ibn Sīnā’s compendium al-Qānūn fī al-ṭibb. The impact and longevity of their influence is evidenced by the plethora of extant copies of the originals and their many commentaries and translations, which continued to be studied extensively for centuries and disseminated widely throughout the Islamic world and South Asia. See esp. Sally Ragep: Jaghmīnī’s Mulakhkhaṣ: An Islamic Introduction to Ptolemaic Astronomy (2016); and “Jaghmīnī.” Encyclopaedia of Islam, 3rd ed. (2020)