al-Karābīsī, Aḥmad - Encyclopaedia of Islam, THREE
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[Article]
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De Young, Gregg
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Leiden
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Brill
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(661 words)
SUMMARY OR ABSTRACT
Text of Note
Aḥmad b. ʿUmar (or Muḥammad) al-Karābīsī (fl. fourth/tenth century) is credited with several Arabic treatises on mathematical topics. We know nothing about his life except that the bio-bibliographer al-Nadīm (d. c.385/995), in his K. al-Fihrist , an "index" of Arabic books completed c.377/987-8, mentions him among several commentators on Euclid's Elements active during the fourth/tenth century. His name, deriving from the Arabic kirbās (pl. karābīs ), a white cotton fabric, implies that his family was involved in the production or