Yusuf ibn Ahmad al-Mu'taman ibn Hud was an Arab mathematician and a member of the Banu Hud family, al-Mutamin ruled Zaragoza from 1082 to 1085. He was the son of the previous ruler, Ahmad ibn Sulayman al-Muqtadir. He also wrote Kitab al-Istikmal (Arabic,كتاب الإستكمال, Book of Perfection) in mathematics.
Ceva's theorem which is often attributed to the Italian mathematician Giovanni Ceva (d. 1734) was proved much earlier by Al-Mu'taman ibn Had.
- ^ Holme, Audun (2010). Geometry: Our Cultural Heritage. Springer. p. 210. ISBN 3-642-14440-3.