Ibrāhīm al-Fazārī
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Ibrahim ibn Habib ibn Sulayman ibn
Samura ibn Jundab Samura ibn Jundab al-Fazārī ( ar, سمرة بن جندب, his father Jundab's name is also commonly transliterated as ''Jundub''; died 677–679) was a companion of the Islamic prophet Muhammad who fought at the Battle of Uhud in 627 and later ...
al-Fazari () (died 777 CE) was an 8th-century Muslim mathematician and astronomer at the
Abbasid The Abbasid Caliphate ( or ; ar, الْخِلَافَةُ الْعَبَّاسِيَّة, ') was the third caliphate to succeed the Islamic prophet Muhammad. It was founded by a dynasty descended from Muhammad's uncle, Abbas ibn Abdul-Mutta ...
court of the Caliph
Al-Mansur Abū Jaʿfar ʿAbd Allāh ibn Muḥammad al-Manṣūr (; ar, أبو جعفر عبد الله بن محمد المنصور‎; 95 AH – 158 AH/714 CE – 6 October 775 CE) usually known simply as by his laqab Al-Manṣūr (المنصور) ...
(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 An astrolabe ( grc, ἀστρολάβος ; ar, ٱلأَسْطُرلاب ; persian, ستاره‌یاب ) is an ancient astronomical instrument that was a handheld model of the universe. Its various functions also make it an elaborate inclin ...
", "on the armillary spheres", "on the calendar"). The Caliph ordered him and his son to translate the Indian astronomical text, The ''
Sindhind ''Zīj as-Sindhind'' (, ''Zīj as‐Sindhind al‐kabīr'', lit. "Great astronomical tables of the Sindhind"; from Sanskrit ''siddhānta'', "system" or "treatise") is a work of zij (astronomical handbook with tables used to calculate celestial po ...
'' along with
Yaʿqūb ibn Ṭāriq Yaʿqūb ibn Ṭāriq (; died AD) was an 8th-century Persian astronomer and mathematician who lived in Baghdad. Works Works ascribed to Yaʿqūb ibn Ṭāriq include:Plofker * (, "Astronomical tables in the ''Sindhind'' resolved for each degr ...
, 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 numeral system Hindus (; ) are people who religiously adhere to Hinduism.Jeffery D. Long (2007), A Vision for Hinduism, IB Tauris, , pages 35–37 Historically, the term has also been used as a geographical, cultural, and later religious identifier for ...
(i.e. modern number notation) was transmitted from India to Iran. At the end of the eighth century, while at the court of the
Abbasid Caliphate The Abbasid Caliphate ( or ; ar, الْخِلَافَةُ الْعَبَّاسِيَّة, ') was the third caliphate to succeed the Islamic prophet Muhammad. It was founded by a dynasty descended from Muhammad's uncle, Abbas ibn Abdul-Muttal ...
, this Muslim geographer mentioned
Ghana Ghana (; tw, Gaana, ee, Gana), officially the Republic of Ghana, is a country in West Africa. It abuts the Gulf of Guinea and the Atlantic Ocean to the south, sharing borders with Ivory Coast in the west, Burkina Faso in the north, and Tog ...
, "the land of gold."


See also

* His son, Muḥammad ibn Ibrāhīm al-Fazārī *
List of Iranian Scientists The following is a non-comprehensive list of Iranian scientists, engineers, and scholars who lived from antiquity up until the beginning of the modern age. For the modern era, see List of contemporary Iranian scientists, scholars, and engineer ...
* zijh *
Ya'qubi ʾAbū l-ʿAbbās ʾAḥmad bin ʾAbī Yaʿqūb bin Ǧaʿfar bin Wahb bin Waḍīḥ al-Yaʿqūbī (died 897/8), commonly referred to simply by his nisba al-Yaʿqūbī, was an Arab Muslim geographer and perhaps the first historian of world cul ...


Notes


Further reading

* H. Suter: Die Mathematiker und Astronomer der Araber (3, 208, 1900) *
Richard Nelson Frye Richard Nelson Frye (January 10, 1920 – March 27, 2014) was an American scholar of Iranian and Central Asian studies, and Aga Khan Professor Emeritus of Iranian Studies at Harvard University. His professional areas of interest were Irania ...
: The Golden Age of Persia


External links

*
PDF version
777 deaths Year of birth unknown Astrologers of the medieval Islamic world 8th-century mathematicians Mathematicians from the Abbasid Caliphate Astronomers from the Abbasid Caliphate 8th-century people from the Abbasid Caliphate 8th-century astronomers 8th-century astrologers 8th-century Arabic writers 8th-century Arabs {{astronomer-stub