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Al-Umawi, who’s full name is Abu Abdallah Yaish ibn Ibrahim ibn Yusuf ibn Simak al-Umawi, is said to have lived from around 1400 to around 1489. Although al-Umawi lived in Damascus in Syria, he came from Andalusia in the south of Spain. Al-Umawi was a mathematical scholar of which only two texts seemed to have survived. These include, Marasim al-intisab fi’ilm al-hisab (On arithmetical rules and procedures), and Raf’al-ishkal fi ma’rifat al-ashkal which is a work on mensuration.
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