Shams al-Dīn Muḥammad ibn Ashraf al-Ḥusaynī al-Samarqandī (Persian: شمس الدین سمرقندی;c. 1250 – c. 1310) was a 13th century Islamictheologian,astronomer andmathematician fromSamarkand, now in Uzbekistan.

Little is known of al-Samarqandi's life, who composed his most important works during the 13th and 14th centuries. He wrote works ontheology,logic,philosophy,mathematics andastronomy which are important in their own right, but also provide information about the works of other astronomers. Histreatise,Risala fi adab al-bahth, is a discussion ofdialectic reasoning as used by theancient Greeks. He wroteSynopsis of Astronomy, and produced a star catalogue for the year 1276–1277.

Al-Samarqandi wrote a 20-page work which discussed 35 ofEuclid's propositions. In his preparation of the work, al-Samarqandi consulted the works of otherMuslim mathematicians such asIbn al-Haytham,Omar Khayyam,Al-Abbās ibn Said al-Jawharī,Nasir al-Din al-Tusi, andAthīr al-Dīn al-Abharī.^[1][2][3]

• Dilgan, Hamid (1970). "Al-Samarqandī, Shams al-Dīn Muḥammad ibn Ashraf al-Ḥusaynī". In Gillispie, Charles Coulston; Holmes, Frederic Lawrence (eds.).Dictionary of Scientific Biography. Vol. 12. New York: Scribner.OCLC 755137603.
• Fazlıoğlu, İhsan (2007)."Samarqandī: Shams al-Dīn Muḥammad ibn Ashraf al-Ḥusaynī al-Samarqandī". In Thomas Hockey; et al. (eds.).The Biographical Encyclopedia of Astronomers. New York: Springer. p. 1008.ISBN 978-0-387-31022-0. (PDF version)
• O'Connor, J.J.; Robertson, E.F. (1999)."Shams al-Din ibn Ashraf Al-Samarqandi".MacTutor.University of St Andrews. Retrieved6 March 2023.

• De Young, Gregg (2001)."The Ashkāl al-Ta'sīs of al-Samarqandī: A Translation and Study".Zeitschrift für Geschichte der Arabisch-Islamischen Wissenschaften.14:57–118.ISSN 0179-4639.

• Hanafis
• Maturidis
• 1250s births
• 1310 deaths
• Central Asia
• Mathematicians of the medieval Islamic world
• Astronomers of the medieval Islamic world
• 13th-century astronomers
• People from Samarkand

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