Yusuf al-Khuri (Arabic: يوسف الخوري), also known as Yusuf al-Khuri al-Qass (d. 912), was a Christian priest, physician, mathematician, and translator of the Abbasid era.

He was one of the five most prominent translators and scholars hired by the Banu Musa brothers along with Hunayn ibn Ishaq, Thabit Ibn Qurra, Qusta Ibn Luqa and Al Himsi.^[1] The Banu Musa brothers were mathematicians and patrons of the House of Wisdom in Baghdad who financed missions to find ancient manuscripts in foreign lands and have them translated.

After the death of the Banu Musa, he formed part of the school of translators founded and led by Thabit Ibn Qurra which produced Arabic versions of some of the mathematical classics: Euclid, Archimedes, Apollonios, Theodosios, Ptolemy.^[2]

Translated works

Among his translated works are Archimedes’ lost work on triangles and The Quadrature of the Parabola (Quadratura parabolae) with the title Kitab al-Muthallathat from Syriac into Arabic,^{[citation needed]} which was afterwards revised by Thabit Ibn Qurra. He also translated Galen's “De simplicium medicamentorum temperamentis ac facultatibus”, which was afterwards revised by Hunayn ibn Ishaq.^[3]

References

^ Johnson, M.C. "Manuscripts of the Bagdad astronomers, 760–1000 AD (p. 219)". The Observatory, Vol. 59, pp. 215–226 (1936).
^ "History of Islamic Science (p.18)".
^ O'Leary, Delacy (22 December 2015). How Greek Science Passed On To The Arabs. ISBN 9781317847489.

Mathematics in the medieval Islamic world

Mathematicians

9th century	'Abd al-Hamīd ibn Turk Sanad ibn Ali al-Jawharī Al-Ḥajjāj ibn Yūsuf Al-Kindi Qusta ibn Luqa Al-Mahani al-Dinawari Banū Mūsā Hunayn ibn Ishaq Al-Khwarizmi Yusuf al-Khuri Ishaq ibn Hunayn Na'im ibn Musa Thābit ibn Qurra al-Marwazi Abu Said Gorgani
10th century	Abu al-Wafa al-Khazin Al-Qabisi Abu Kamil Ahmad ibn Yusuf Aṣ-Ṣaidanānī Sinān ibn al-Fatḥ al-Khojandi Al-Nayrizi Al-Saghani Brethren of Purity Ibn Sahl Ibn Yunus al-Uqlidisi Al-Battani Sinan ibn Thabit Ibrahim ibn Sinan Al-Isfahani Nazif ibn Yumn al-Qūhī Abu al-Jud Al-Sijzi Al-Karaji al-Majriti al-Jabali
11th century	Abu Nasr Mansur Alhazen Kushyar Gilani Al-Biruni Ibn al-Samh Abu Mansur al-Baghdadi Avicenna al-Jayyānī al-Nasawī al-Zarqālī ibn Hud Al-Isfizari Omar Khayyam Muhammad al-Baghdadi
12th century	Jabir ibn Aflah Al-Kharaqī Al-Khazini Al-Samawal al-Maghribi al-Hassar Sharaf al-Din al-Tusi Ibn al-Yasamin
13th century	Ibn al‐Ha'im al‐Ishbili Ahmad al-Buni Ibn Munim Alam al-Din al-Hanafi Ibn Adlan al-Urdi Nasir al-Din al-Tusi al-Abhari Muhyi al-Din al-Maghribi al-Hasan al-Marrakushi Qutb al-Din al-Shirazi Shams al-Din al-Samarqandi Ibn al-Banna' Kamāl al-Dīn al-Fārisī
14th century	Nizam al-Din al-Nisapuri Ibn al-Shatir Ibn al-Durayhim Al-Khalili al-Umawi
15th century	Ibn al-Majdi al-Rūmī al-Kāshī Ulugh Beg Ali Qushji al-Wafa'i al-Qalaṣādī Sibt al-Maridini Ibn Ghazi al-Miknasi
16th century	Al-Birjandi Muhammad Baqir Yazdi Taqi ad-Din Ibn Hamza al-Maghribi Ahmad Ibn al-Qadi

Mathematical
works

Concepts

Centers

Influences

Influenced

Physicians

7th century	Abu Hafsa Yazid Al-Harith ibn Kalada Bukhtishu Ibn Abi Ramtha al-Tamimi Ibn Uthal Masarjawaih Nafi ibn al-Harith Rufaida Al-Aslamia Zaynab al-Awadiya
8th century	Bukhtishu Ja'ar al-Sadiq
9th century	Al-Kindi Al-Ruhawi Albubather Ali al-Ridha Ali ibn Sahl Rabban al-Tabari Bukhtishu Hunayn ibn Ishaq Ishaq ibn Hunayn Jabir ibn Hayyan Jabril ibn Bukhtishu Masawaiyh Salmawaih ibn Bunan Shapur ibn Sahl Yahya ibn Sarafyun Yuhanna ibn Bukhtishu Yusuf al-Khuri
10th century	'Ali ibn al-'Abbas al-Majusi Aayon Ibn Aayon Abu Bakr Rabee Ibn Ahmad Al-Akhawyni Bokhari Abu Bakr al-Razi Abu Sahl 'Isa ibn Yahya al-Masihi Abu Zayd al-Balkhi Abu al-Hasan al-Tabari Abu al-Qasim Muqane'i Abu al-Qasim al-Zahrawi Abu ul-Ala Shirazi Al-Kaŝkarī Al-Natili Al-Tamimi, the physician Eutychius of Alexandria Ibn Abi al-Ashʿath Ibn Juljul Ibn al-Jazzar Ibrahim ibn Baks Isaac Israeli ben Solomon Mohammed ibn Abdun al-Jabali Muvaffak Qumri Qusta ibn Luqa
11th century	Abdollah ibn Bukhtishu Abu 'Ubayd al-Juzjani Abu al-Hakam al-Kirmani Al-Biruni Ali ibn Isa al-Kahhal Ali ibn Ridwan Ali ibn Yusuf al-Ilaqi Ammar ibn Ali al-Mawsili Avicenna Badi' al-Asturlabi Ephraim ibn al-Za'aran Ibn Abi Sadiq Ibn Al-Thahabi Ibn Butlan Ibn Hindu Ibn Jazla Ibn al-Haytham Ibn al-Kattani Ibn al-Wafid Jonah ibn Janah Masawaih
12th century	Abu Jafar ibn Harun al-Turjali Abu al-Bayan ibn al-Mudawwar Abu al-Majd ibn Abi al-Hakam Abu'l-Barakāt al-Baghdādī Ahmad ibn Farrokh Al-Samawal al-Maghribi Avempace Averroes Ibn Habal Ibn Jumay‘ Ibn Tufayl Ibn Zuhr Ibn al-Tilmīdh Moshe ben Maimon Muhammad ibn Aslam Al-Ghafiqi Serapion the Younger Ya'qub ibn Ishaq al-Israili Zayn al-Din Gorgani
13th century	Abd al-Latif al-Baghdadi Abraham ben Moses ben Maimon Al-Dakhwar Al-Shahrazuri Amin al-Din Rashid al-Din Vatvat As-Suwaydi Da'ud Abu al-Fadl Hussam al-Din al-Jarrahi Ibn Abi Usaibia Ibn Tumlus Ibn al-Baitar Ibn al-Nafis Ibn al-Quff Ibn al‐Raqqam Joseph ben Judah of Ceuta Najib ad-Din Samarqandi Qutb al-Din al-Shirazi Rashidun al-Suri Sa'ad al-Dawla Zakariya al-Qazwini
14th century	Al-Nagawri Aqsara'i Ibn Shuayb Ibn al-Akfani Ibn al-Khatib Jaghmini Mansur ibn Ilyas Mas‘ud ibn Muhammad Sijzi Muhammad ibn Mahmud Amuli Najm al-Din Mahmud ibn Ilyas al-Shirazi Nakhshabi Rashid-al-Din Hamadani Sadid al-Din al-Kazaruni Yusuf ibn Ismail al-Kutubi Zayn-e-Attar
15th century	Abu Sa'id al-Afif Burhan-ud-din Kermani Husayni Isfahani Muhammad Ali Astarabadi Muhammad ibn Yusuf al-Harawi Nurbakhshi Shaykh Muhammad ibn Thaleb Şerafeddin Kadir
16th century	Rostam Gorgani ʽImad Shirazi Abul Qasim ibn Mohammed al-Ghassani Dawud al-Antaki Hakim-e-Gilani Sultan Ali Khorasani Taqi al-Din Muhammad ibn Ma'ruf
17th century	Qiwam al-Din Muhammad al-Hasani Abd El Razzaq Al-Jazaïri Qurayshi al-Shirazi Tunakabuni Maqsud-Ali Tabrizi
18th century	Al-Khurasani al-Shirazi