Ya'ish ibn Ibrahim al-Umawi
Spanish-Arab Mathematician (c.1400 - 1489)
From Wikipedia, the free encyclopedia
Abū ʿAbdallāh Yaʿīsh ibn Ibrāhīm ibn Yūsuf ibn Simāk al-Andalusī al-Umawī (Arabic: يعيش بن إبراهيم بن يوسف بن سماك الأموي الأندلسي) (1400? in Al-Andalus – 1489 in Damascus, Mamluk Sultanate) was a 15th-century Spanish-Arab[1] mathematician.
Works
- Marasim al-intisab fi'ilm al-hisab ("On arithmetical rules and procedures"), first date written in 1373 and hence the birth date above is controversial.
- Raf'al-ishkal fi ma'rifat al-ashkal (a work on mensuration).
