Ibrahim al-Fazari 

Ibrahim al-Fazari (died 777 CE) was an 8th-century Muslim 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 numeral system (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, this Muslim geographer mentioned Ghana, “the land of gold.”[1]

 

Fazari

Fazari
Fazari (al-Fazari). Name of two noted mathematicians.

(Abu Ishaq Ibrahim ibn Habib ibn Sulaiman ibn Samura ibn Jundab al-Fazari) 8th century Muslim mathematician and astronomer of either Arab or Persian background.He recorded the first known mention of the Ghana empire. Although he lived at the court of the Abbasid Caliph in Baghdad, the fame of Ghana reached him, and he referred to Ghana as “the land of gold.” 

Al-Fazari was the mathematician and astronomer at the Abbasid court of the Caliph Harun al-Rashid. He is not to be confused with his son Muhammad al-Fazari, 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 Yaqub ibn Tāriq, which was completed in Baghdad about 750 C.C., 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 Islam.

He died in 777 C.C.

Abu abdallah Muhammad ibn Ibrahim al-Fazari(d. 796 or 806) was a Muslim philosopher, mathematician and astronomer. He is not to be confused with his father Ibrahim al-Fazari, also an astronomer and mathematician.

While some sources refer to him as an Arab, other sources state that he was a Persian.

Al-Fazari translated many scientific books into Arabic and Persian. He is credited with having built the first astrolabe in the Islamic world.

Along with Yaqub ibn Tariq and his father he helped translate the Indian astronomical text by Brahmagupta (fl. 7th century), the Brahmasphutasiddhanta, into Arabic as Az-Zīj ‛alā Sinī al-‛Arab, or the Sindhind. This translation was possibly the vehicle by means of which the Hindu numerals were transmitted from India to Islam. 
al-Fazari see Fazari
Abu Ishaq Ibrahim ibn Habib ibn Sulaiman ibn Samura ibn Jundab al-Fazari see Fazari
Abu abdallah Muhammad ibn Ibrahim al-Fazari

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