Kushyar ibn Labban

Kushyar ibn Labban
كوشيار بن لبان
Born971
Gilan, Justanid dinasty
Died1029
Baghdad, Buyid Empire
Academic work
EraIslamic Golden Age
Main interestsAstronomy, mathematics, geography

Abu l-Hasan Kūshyār ibn Labbān ibn Bashahrī al-Jīlī (Arabic: أبو الحسن كوشياربن لبّان بن باشهري الجيلي) (971–1029), also known as Kushyar ibn Labban, was an Iranian mathematician, geographer, and astronomer from Gilan, south of the Caspian Sea, Iran. Author of Principles of Hindu Reckoning.

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