Ibrāhīm al-Fazārī

Ibrahim al-Fazari
Died	160 AH/ 777 AD Baghdad, Abbasid Caliphate, now Iraq
Occupation	Mathematician
Era	Islamic Golden Age

Ibrahim al-Fazari (d. 777 CE) was an 8th-century mathematician and astronomer at the Abbasid court of the Caliph Al-Mansur (r. 754–775). He should not to be confused with his son Muḥammad ibn Ibrāhīm al-Fazārī, also an astronomer. He composed various astronomical writings ("on the astrolabe", "on the armillary spheres", "on the calendar").

The Caliph ordered him and his son to translate the Indian astronomical text, The Sindhind along with Yaʿqūb ibn Ṭāriq, which was completed in Baghdad about 750 CE, and entitled Az-Zīj ‛alā Sinī al-‛Arab. This translation was possibly the vehicle by means of which the Hindu numerals were transmitted from India to Iran.

At the end of the eighth century, while at the court of the Abbasid Caliphate, this Arab geographer mentioned Ghana, "the land of gold."^[1]

See also

• His son, Muḥammad ibn Ibrāhīm al-Fazārī
• List of Iranian Scientists
• zij
• Ya'qubi

Notes

1. Levtzion, Nehemia (1973). Ancient Ghana and Mali. New York: Methuen & Co Ltd. p. 3. ISBN 0841904316.

Kennedy, Edward Stewart (1956). Islamic Astronomical Tables. American Philosophical Society. ISBN 9780871694621. Retrieved 29 September 2014.

Further reading

• H. Suter: Die Mathematiker und Astronomer der Araber (3, 208, 1900)
• Richard Nelson Frye: The Golden Age of Persia

External links

• Plofker, Kim (2007). "Fazārī: Muḥammad ibn Ibrāhīm al‐Fazārī". In Thomas Hockey; et al. The Biographical Encyclopedia of Astronomers. New York: Springer. pp. 362–3. ISBN 978-0-387-31022-0. (PDF version)