Which Happened First?

Abu Sahl al-Quhi

Abu Sahl al-Quhi
Image: Abū Sahl al-Qūhī · CC0 · source

Abū Sahl Wayjan ibn Rustam al-Kūhī was a Persian mathematician, physicist and astronomer. He was from Kuh, an area in Tabaristan, Amol, and flourished in Baghdad in the 10th century. He is considered one of the greatest geometers, with many mathematical and astronomical writings ascribed to him.

Summary from Wikipedia (CC BY-SA 4.0) · Dates from Wikidata (CC0)

Who was born first?

Timeline

  1. Sylvester IIcirca AD 938 – May 12, 1003
  2. Abu al-Wafa BuzjaniJune 10, AD 940 – July 15, AD 998
  3. Abu Sahl al-Quhi (this page)circa AD 940 – circa 1000
  4. Abu-Mahmud Khujandicirca AD 940 – circa 1000
  5. Ibn Sahl940–1000
  6. Abbo of Fleurycirca AD 945 – November 13, 1004

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Abu Sahl al-Quhi (circa AD 940 – circa 1000) · Which Happened First?