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Abū Ḥātim al-Muẓaffar al-Isfazārī
المظفر الاسفزاري
Manuscript of Irshād dhawī al-cirfān ilā ṣinācat al-qaffān
Academic work
EraIslamic Golden Age
Main interestsMathematics, astronomy
Notable worksIrshād dhawī al-cirfān ilā ṣinācat al-qaffān

Abū Ḥātim al-Muẓaffar al-Isfazārī (Arabic: المظفر الاسفزاري; fl. late 11th or early 12th century) was an Islamic mathematician, astronomer and engineer from Khurasan. According to the historian and geographer Ibn al-Athir and the polymath Qutb al-Din al-Shirazi, he worked in the Seljuq observatory of Isfahan. The Persian writer Nezami Aruzi met him in Balkh in (in present‐day Afghanistan) in 1112 or 1113.[1]

Al-Isfazārī was a contemporary of the Persian polymath Umar al-Khayyam and the Persian astronomer Al-Khazini. Al-Isfazārī's main work, Irshād dhawī al-cirfān ilā ṣinācat al-qaffān (Guiding the Possessors of Learning in the Art of the Steelyard), sets out the theory of the steelyard balance with unequal arms. His other surviving works include a summary of Euclid's Elements, a text on geometrical measurements, and a treatise in Persian on meteorology.[citation needed]

Al-Isfazārī's corpus of mechanics is composed of two sets of texts, which have been published as Matn al-Muẓaffar al-Isfazārī fī cilmay al-aṯqāl wa’l-ḥiyal by the Al-Furqan Islamic Heritage Foundation.[citation needed]



  • Abattouy, Mohammed (2007). "Wābkanawī: Shams al‐Munajjim [Shams al‐Dīn] Muḥammad ibn ҁAlī Khwāja al‐Wābkanawī [Wābkanawī]". In Hockey, Thomas; et al. (eds.). The Biographical Encyclopedia of Astronomers. Springer. pp. 577–578. doi:10.1007/978-0-387-30400-7_1433. ISBN 978-1-4419-9918-4.

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