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Kushyar Gilani

Kushyar Gilani

Iranian mathematician
Abul-Hasan Kūshyār ibn Labbān ibn Bashahri Daylami, also known as Kūshyār Daylami, was an Iranian mathematician, geographer, and astronomer from Daylam, south of the Caspian Sea, Iran. Wikipedia
Born: 971 AD, Gilan Province, Iran
Died: 1029 (age 58 years), Baghdad, Iraq
Notable student: Ali ibn Ahmad al-Nasawi