Ya'ish ibn Ibrahim al-Umawi
{{Redirect|Al-Umawi|the Emir of Cordoba|Abdullah ibn Muhammad al-Umawi}}
Abū ʿAbdallāh Yaʿīsh ibn Ibrāhīm ibn Yūsuf ibn Simāk al-Andalusī al-Umawī ({{Langx|ar|يعيش بن إبراهيم بن يوسف بن سماك الأموي الأندلسي}}) (1400? in Al-Andalus – 1489 in Damascus, Mamluk Sultanate) was a 15th-century Spanish-Arab{{cite book|last1=Gibb|first1=Hamilton Alexander Rosskeen|last2=Kramers|first2=Johannes Hendrik|last3=Lewis|first3=Bernard|last4=Pellat|first4=Charles|last5=Schacht|first5=Joseph|title=The Encyclopaedia of Islam|date=1970|publisher=Brill|url=https://books.google.com/books?id=BJbrAAAAMAAJ&q=%22Spanish-Arab+Ya%27ish+b.+Ibrahim%22|language=en}} 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).
References
{{reflist}}
Bibliography
- {{cite encyclopedia | last = Saidan | first = A. S. | title=Al-Umawī, Abū 'Abdallāh Ya'īsh Ibn ibrāHīm Ibn Yūsuf Ibn Simāk Al-Andalusī | url=http://www.encyclopedia.com/doc/1G2-2830904415.html | encyclopedia = Dictionary of Scientific Biography | publisher = Charles Scribner's Sons| location = New York| year = 1970| isbn = 0-684-10114-9}}
- Ahmad Salim Saidan (ed.), Yaish ibn Ibrahim al-Umawi, On arithmetical rules and procedures (Aleppo, 1981).
External links
- {{MacTutor Biography|id=Al-Umawi}}
{{Islamic mathematics}}
{{Authority control}}
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Category:15th-century Arab people
Category:Mathematicians from al-Andalus
Category:Medieval Syrian mathematicians
Category:14th-century mathematicians
Category:15th-century Syrian people
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