Ya'ish ibn Ibrahim al-Umawi

Abū ʿAbdallāh Yaʿīsh ibn Ibrāhīm ibn Yūsuf ibn Simāk Al-Andalus al-Umawī (Arabic) (1400? a Al-Andalus - 1489 a Damascus, Mamluk Sultanate) masanin lissafi ne na Mutanen Espanya-Arabiya na ƙarni na 15.[1]

 Ayyuka 

 Marasim al-intisab fi'ilm al-hisab ("A kan ka'idojin lissafi da hanyoyin"), kwanan wata na farko da aka rubuta a 1373 sabili da haka ranar haihuwar da ke sama tana da rikici.
 Raf'al-ishkal fi ma'rifat al-ashkal (aiki kan auna).

 Bayanan da aka ambata 

 Bayanan littattafai 


 Ahmad Salim Saidan (ed.), Yaish ibn Ibrahim al-Umawi, A kan ka'idojin lissafi da hanyoyin (Aleppo, 1981).

 Haɗin waje