Nazif ibn Yumn
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Nazif ibn Yumn al-Qass, was a Persian mathematician of the middle ages.
He flourished under the Buwayhid sultan Adud al-dowleh; and died in 990 AD. He was also a translator of Greek into Arabic, translating the Tenth book of Euclid. (H. Suter: Mathematiker, 68, 1900).