What are both Al-Nayrizi and Abu'l-Hasan al-Uqlidisi?
Abu'l-Hasan al-Uqlidisi: Abu'l Hasan Ahmad ibn Ibrahim Al-Uqlidisi was an Arab mathematician, who was active in Damascus and Baghdad. Al-Nayrizi: Abū’l-‘Abbās al-Faḍl ibn Ḥātim al-Nairīzī (Arabic: أبو العباس الفضل بن حاتم النيريزي‎ ‎ , Latin: "Anaritius, Nazirius" , 865–922) was a Persian mathematician and astronomer from Nayriz, Fars Province, Iran.
mathematician