9th-century Iranian mathematicians

Muhammad ibn Musa al-Khwarizmi, or simply al-Khwarizmi () was a mathematician active during the Islamic Golden Age, who produced Arabic-language works in mathematics, astronomy, and geography. Around 820, he worked at the House of Wisdom in Baghdad, the contemporary capital city of the Abbasid Caliphate. One of the most prominent scholars of the period, his works were widely influential on later authors, both in the Islamic world and Europe.

Abū al-ʿAbbās Aḥmad ibn Muḥammad ibn Kathīr al-Farghānī () also known as Alfraganus in the West (870), was an astronomer in the Abbasid court in Baghdad, and one of the most famous astronomers in the 9th century. Al-Farghani composed several works on astronomy and astronomical equipment that were widely distributed in Arabic and Latin and were influential to many scientists. His best known work, Kitāb fī Jawāmiʿ ʿIlm al-Nujūmi (whose name translates to Elements of astronomy on the celestial motions), was an extensive summary of Ptolemy's Almagest containing revised and more accurate experiment

Persian Islamic polymath (died 895)

Persian brothers, mathematicians and astronomers

Persian polymath

astronomer, mathematician, and geographer

Abu-Abdullah Muhammad ibn Īsa Māhānī (, flourished c. 860 and died c. 880) was a Persian mathematician and astronomer born in Mahan, (in today Kermān, Iran) and active in Baghdad, Abbasid Caliphate. His known mathematical works included his commentaries on Euclid's Elements, Archimedes' On the Sphere and Cylinder and Menelaus' Sphaerica, as well as two independent treatises. He unsuccessfully tried to solve a problem posed by Archimedes of cutting a sphere into two volumes of a given ratio, which was later solved by 10th century mathematician Abū Ja'far al-Khāzin. His only known surviving work

Persian Jewish astrologer and astronomer (c. 740–815 AD)

'''Abū’l-'Abbās al-Faḍl ibn Ḥātim al-Nairīzī''' (; ; , ) was a Persian mathematician and astronomer from Nayriz, now in Fars province, Iran.

mathematician

Islamic mathematician and astronomer

Persian astronomer

9th century Syriac astronomer and mathematician (c. 786 - c. 845)

Iranian mathematician, astronomer and philosopher