Ya'ish ibn Ibrahim al-Umawi

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, Syria) was a 14th-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).
gollark: That isn't actually the reason though.
gollark: Being noticed in some way, presumably, regardless of how annoying or bad it is?
gollark: "Protesting" at maximum disruptiveness would literally just be terrorism.
gollark: I mean, you still expect them to stick to SOME standards.
gollark: It also isn't true that a violent protest in your area means you'll be hurt or suffer property damage.

References

  1. Gibb, Hamilton Alexander Rosskeen; Kramers, Johannes Hendrik; Lewis, Bernard; Pellat, Charles; Schacht, Joseph (1970). The Encyclopaedia of Islam. Brill.

Bibliography


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