Yaʿīsh ibn Ibrāhīm al-Umawī

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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 (1400? in Al-Andalus – 1489? in Damascus, Syria?) was a 14th-century mathematician.

Works[edit]

  • 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[edit]

External links[edit]