Al-Abbās ibn Said al-Jawharī

Al-ʿAbbās ibn Saʿid al-Jawharī (c. 800 Baghdad? – c. 860 Baghdad?) was a geometer who worked at the House of Wisdom in Baghdad and for in a short time in Damascus where he made astronomical observations. His most important work was his Commentary on Euclid's Elements which contained nearly 50 additional propositions and an attempted proof of the parallel postulate.

References

• De Young, Gregg (1997). "Al-Jawhari's additions to Book V of Euclid's Elements". Zeitschrift für Geschichte der Arabisch-Islamischen Wissenschaften 11 (10): 153–178.
• Hatipov, A. E.-A. (1964). "The theory of parallel lines in the medieval East". Trudy Samarkand. Gos. Univ. (N.S.) Vyp. (in Russian) 144: 5–47.
• Jaouiche, Khalil (1986). La théorie des parallèles en pays d’Islam: Contribution à la préhistoire des géométries non euclidiennes (in French). J. Vrin. ISBN 2-7116-0920-0.
• Rozenfeld, Boris Abramovich (1988). The History of Non-Euclidean Geometry: Evolution of the Concept of a Geometric Space. Springer. ISBN 0-387-96458-4.

External links

• Bolt, Marvin (2007). "Jawharī: al‐ʿAbbās ibn Saʿīd al‐Jawharī". In Thomas Hockey; et al. The Biographical Encyclopedia of Astronomers. New York: Springer. pp. 591–2. ISBN 978-0-387-31022-0. (PDF version)
• Sabra, Abdelhamid I. (1973). "Al-Jawharī, Al-‘Abbās Ibn Sa‘īd". Dictionary of Scientific Biography volume=VII. pp. 79–80.
• O'Connor, John J.; Robertson, Edmund F. (November 1999), "al-Abbas ibn Said Al-Jawhari", MacTutor History of Mathematics archive, University of St Andrews.