# Omar Khayyám

> Persian mathematician and poet (1048–1131)

**Wikidata**: [Q35900](https://www.wikidata.org/wiki/Q35900)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Omar_Khayyam)  
**Source**: https://4ort.xyz/entity/omar-khayyam

## Summary
Omar Khayyám was a Persian polymath renowned for his contributions as a mathematician, astronomer, and poet. He is most famous for his work on algebra, calendar reform, and his collection of quatrains known as the *Rubáiyát*.

## Biography
- Born: 18 May 1048, Nishapur, Seljuk Empire
- Nationality: Persian
- Education: Studied under prominent scholars in Balkh and Samarkand
- Known for: *Rubáiyát of Omar Khayyám*, algebraic geometry, and calendar reform
- Employer(s): Seljuk court in Isfahan
- Field(s): Mathematics, astronomy, poetry, philosophy

## Contributions
Omar Khayyám made significant contributions across multiple disciplines:
- Authored the *Rubáiyát*, a collection of quatrains that gained global fame through Edward FitzGerald's 19th-century translation.
- Advanced algebraic geometry, particularly in his *Treatise on Demonstration of Problems of Algebra* (1070), where he classified cubic equations and provided geometric solutions.
- Led the reform of the Persian calendar, contributing to the development of the highly accurate Jalali calendar, which influenced the modern Solar Hijri calendar used in Iran today.
- Conducted astronomical observations and calculations that advanced the understanding of celestial mechanics.
- His work in mathematics included studies on the parallel postulate and the Saccheri quadrilateral, laying early groundwork for non-Euclidean geometry.

## FAQs
### What is Omar Khayyám most famous for?
Omar Khayyám is most famous for his *Rubáiyát*, a collection of quatrains that gained international recognition through Edward FitzGerald's translation. He is also celebrated for his mathematical and astronomical contributions, particularly in algebra and calendar reform.

### What were Omar Khayyám's mathematical contributions?
Khayyám's mathematical work included significant advancements in algebra, particularly his *Treatise on Demonstration of Problems of Algebra* (1070), where he classified and solved cubic equations using geometric methods. He also worked on the parallel postulate, influencing later developments in geometry.

### What role did Omar Khayyám play in astronomy?
Khayyám was involved in calendar reform under the Seljuk court, leading to the creation of the highly accurate Jalali calendar. His astronomical observations and calculations contributed to the refinement of timekeeping systems, with his work influencing the modern Solar Hijri calendar used in Iran.

### What is Omar Khayyám's legacy in literature?
Khayyám's legacy in literature is primarily through his *Rubáiyát*, a collection of quatrains that explore themes of life, love, and existential reflection. These poems, known for their philosophical depth, were popularized in the West by Edward FitzGerald's translation and continue to be celebrated for their literary and emotional impact.

## Why They Matter
Omar Khayyám's influence spans multiple fields. In mathematics, his geometric solutions to cubic equations and work on the parallel postulate laid foundational stones for future studies. In astronomy, his role in calendar reform resulted in one of the most accurate calendars of its time. In literature, his *Rubáiyát* transcended cultural boundaries, becoming a global literary phenomenon through FitzGerald’s translation. His multidisciplinary impact underscores the integration of science and poetry, influencing both Eastern and Western intellectual traditions.

## Notable For
- Author of the *Rubáiyát of Omar Khayyám*, a collection of quatrains that gained international acclaim.
- Significant contributions to algebra, particularly geometric solutions to cubic equations.
- Leadership in calendar reform, contributing to the Jalali calendar, one of the most accurate solar calendars.
- Pioneering work in the classification of cubic equations and their geometric solutions.
- Influencing the development of the Solar Hijri calendar, still in use in Iran.
- Early exploration of the parallel postulate, impacting the evolution of non-Euclidean geometry.
- Advancing the field of algebraic geometry through his treatise.
- Laying the groundwork for future mathematical and astronomical studies.

## Body
### Early Life and Education
Omar Khayyám was born in 1048 in Nishapur, within the Seljuk Empire. He studied under notable scholars in Balkh and Samarkand, mastering mathematics, astronomy, and Islamic jurisprudence. His early education laid the foundation for his later contributions to science and literature.

### Career
Khayyám's career was marked by his service under the Seljuk court in Isfahan, where he worked on calendar reform and produced significant mathematical treatises. He authored the *Treatise on Demonstration of Problems of Algebra* in 1070, where he classified cubic equations and provided geometric solutions. His work in astronomy included contributions to the Jalali calendar, known for its precision and influence on the modern Solar Hijri calendar.

### Mathematical Contributions
Khayyám's mathematical achievements include:
- Classification and geometric solution of cubic equations in his *Treatise on Demonstration of Problems of Algebra* (1070).
- Early exploration of the parallel postulate, influencing the development of non-Euclidean geometry.
- Work on the Saccheri quadrilateral, which later influenced the study of geometry.

### Literary Contributions
Khayyám's literary legacy is primarily embodied in the *Rubáiyát*, a collection of quatrains (Rubáiyát) that explore themes of existential reflection, love, and the human condition. These quatrains, known for their philosophical depth, were popularized in the West by Edward FitzGerald's 19th-century translation, bringing Khayyám international fame.

### Astronomical and Calendar Work
Khayyám's astronomical contributions include:
- Leadership in the reform of the Persian calendar, resulting in the highly accurate Jalali calendar.
- Influence on the development of the Solar Hijri calendar, which is still in use in Iran.
- Advancement in the understanding of celestial mechanics through his observations and calculations.

### Influence and Legacy
Omar Khayyám's influence spans multiple disciplines:
- In mathematics, his work on cubic equations and the parallel postulate laid foundational stones for future studies.
- In astronomy, his role in calendar reform resulted in one of the most accurate calendars of its time.
- In literature, his *Rubáiyát* transcended cultural boundaries, becoming a global literary phenomenon through FitzGerald’s translation.
- His multidisciplinary impact underscores the integration of science and poetry, influencing both Eastern and Western intellectual traditions.

### Publications and Works
Key publications and works include:
- *Rubáiyát of Omar Khayyám*: A collection of quatrains that gained international recognition through Edward FitzGerald's translation.
- *Treatise on Demonstration of Problems of Algebra* (1070): A foundational text in algebraic geometry.
- Calendar reform contributions: Influenced the development of the Jalali and Solar Hijri calendars.

### Recognition and Honors
Khayyám's contributions have been recognized through:
- The naming of the Khayyam satellite, launched in 2022, in his honor.
- Continued references to his work in modern astronomical and mathematical studies.
- Celebrations of his literary and scientific legacy in cultural and educational contexts.

### Related Fields and Concepts
Khayyám's work intersects with:
- Mathematics: Algebraic geometry, cubic equations, and the parallel postulate.
- Astronomy: Calendar reform and celestial observations.
- Literature: The *Rubáiyát* and its global impact.
- Philosophy: Themes of existential reflection in his quatrains.
- History: His role in the Seljuk Empire's scientific advancements.

### Legacy
Omar Khayyám's legacy is multifaceted:
- In mathematics, his geometric solutions to cubic equations and work on the parallel postulate influenced future studies.
- In astronomy, his calendar reform resulted in one of the most accurate calendars of its time.
- In literature, his *Rubáiyát* continues to be celebrated for its philosophical depth and literary merit.
- His multidisciplinary impact underscores the integration of science and poetry, influencing both Eastern and Western intellectual traditions.

## References

1. Archivio Storico Ricordi
2. Catalog of the German National Library
3. BnF authorities
4. datos.bne.es
5. Czech National Authority Database
6. The Fine Art Archive
7. Library of the World's Best Literature
8. Mathematics Genealogy Project
9. CiNii Research
10. Virtual International Authority File
11. MusicBrainz
12. [Source](https://lingualibre.org/wiki//Q470479)
13. MacTutor History of Mathematics archive
14. SNAC
15. Find a Grave
16. International Music Score Library Project
17. IMDb
18. Freebase Data Dumps. 2013
19. Integrated Authority File
20. Anthology of philosophy in Persia: from Zoroaster to Omar Khayyam
21. [Source](https://www.bartleby.com/library/bios/index9.html)
22. CONOR.SI
23. zbMATH Open Database
24. BBC Things
25. CERL Thesaurus
26. Treccani's Enciclopedia on line
27. National Library of Israel
28. LIBRIS. 2017
29. FactGrid
30. Bibliography of the History of the Czech Lands
31. HMML Authority File
32. Digital Scriptorium Catalog