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Abū Ja˓far al‐Khāzin

Authors: Jan P Hogendijk
Publish Date: 2008
Volume: , Issue: , Pages: 6-7
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Abstract

Abū Ja˓far Muḥammad ibn al‐ḥusay al‐Khāzin was a mathematician and astronomer who lived in the early tenth century AD in Khorasān Until recently it was believed that there were two different mathematicians in the same period namely Abū Ja˓far al‐Khāzin and Abū Ja˓far Muḥammad ibn al‐ḥusayn but in 1978 Anbouba and Sezgin showed that they are the same personIn mathematics Abū Ja˓far al‐Khāzin is mainly known because he was the first to realize that a cubic equation could be solved geometrically by means of conic sections Al‐Māhānī ca AD 850 had shown that an auxiliary problem in Archimedes’ On the Sphere and Cylinder II 4 which Archimedes had left unsolved could be reduced to a cubic equation of the form Open image in new window


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