Mathematician:Thabit ibn Qurra

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Sabian mathematician, physician, astronomer, and translator who lived in Baghdad in the second half of the ninth century during the time of Abbasid Caliphate.

Made important discoveries in algebra, geometry, and astronomy.

One of the first reformers of the Ptolemaic system in Astronomy.

A founder of the discipline of statics.




  • Born: 836 in Harran, Mesopotamia (now Turkey)
  • Died: 18 February 901 in Baghdad, (now in Iraq)

Theorems and Definitions

Results named for Thabit ibn Qurra can be found here.

Definitions of concepts named for Thabit ibn Qurra can be found here.


  • Translated from Greek into Arabic works by:
Apollonius of Perga
Archimedes of Syracuse
Claudius Ptolemy

Also known as

Full name: Al-Ṣābiʾ Thābit ibn Qurra al-Ḥarrānī.

In Arabic: ثابت بن قرة‎‎

In Latin: Thebit, Thebith or Tebit.