Abu Said Gorgani

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Abu Sa'id al-Dharir al-Jurjani (ابو سعيد الضرير الجرجاني), also Gurgani, was a 9th-century Persian[1] mathematician and astronomer from Gurgan (Jurjan), Iran. He wrote a treatise on geometrical problems and another on the drawing of the meridian. George Sarton considers him a pupil of Ibn al-A'rabi, but Carl Brockelmann rejects this opinion.


Two of his works are extant:

  • Masa'il Hindisia (a manuscript is available in Cairo)
  • Istikhraj khat nisf al-nahar min kitab analima wa al-borhan alayh (available in Cairo, translated by Carl Schoy)

See also[edit]


  1. ^ Dianat, Abu'l-Hasan. "Abu Said Jorjani". Encyclopedia Islamica. CGIE. Retrieved 4 February 2017.
  • H. Suter. Mathematiker (12, 1900).