Ya'ish_ibn_Ibrahim_al-Umawi

Ya'ish ibn Ibrahim al-Umawi

Ya'ish ibn Ibrahim al-Umawi

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"Al-Umawi" redirects here. For the Emir of Cordoba, see Abdullah ibn Muhammad 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 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).

References

  1. [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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