Kushyar Gilani (971–1029)

Born 971 CE, died 1029 CE.

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.

Text from the Wikipedia article Kushyar_ibn_Labban, licensed CC BY-SA 4.0.

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