# Ali Qushji

> Ottoman astronomer and mathematician

**Wikidata**: [Q423644](https://www.wikidata.org/wiki/Q423644)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Ali_Qushji)  
**Source**: https://4ort.xyz/entity/ali-qushji

## Summary
Ali Qushji (also known as Ali Kuşçu) was an Ottoman astronomer and mathematician who lived from 1403 to 1474, working primarily in the Ottoman Empire and associated with institutions like the Sahn-ı Seman Medrese and Hagia Sophia in Istanbul.

## Biography
- Born: 1403-01-01 (January 1, 1403)
- Nationality: Ottoman Empire (citizenship: Q484195, Q12560)
- Education: Educated at Q492144 (institution not specified in source)
- Known for: Ottoman astronomer and mathematician (primary identity)
- Employer(s): Q608580, Q6580381, Q12506 (various institutions)
- Field(s): Astronomy, mathematics

## Contributions
The source material indicates Ali Qushji was associated with the Zij-i Sultani, an astronomical table and star catalogue published by Ulugh Beg in 1438–1439. His work would have contributed to astronomical calculations and celestial observations during the Ottoman period.

## FAQs
- Where has Ali Qushji worked? He worked at institutions including the Sahn-ı Seman Medrese in Istanbul and was affiliated with the Ulugh Beg Observatory and Ulugh Beg Madrasa in Samarkand.
- What was his primary field? He was primarily an astronomer and mathematician.
- When did he live? He lived from 1403 to 1474.
- What was his nationality? He was of Ottoman Empire citizenship.

## Why They Matter
Ali Qushji made significant contributions to astronomy and mathematics during the Ottoman Empire period. His work would have influenced later astronomers and mathematicians in the region, and his contributions to astronomical tables and calculations would have been important for navigation, timekeeping, and understanding celestial bodies.

## Notable For
- Ottoman astronomer and mathematician
- Associated with the Ulugh Beg Observatory and educational institutions
- Worked at significant Ottoman institutions like Sahn-ı Seman Medrese and Hagia Sophia

## Body
### Early Life
Ali Qushji was born on January 1, 1403. The source material does not specify his exact birthplace, but he was identified as having Ottoman Empire citizenship.

### Career and Education
He received his education at an institution identified as Q492144. His career involved working at several significant institutions across the Ottoman Empire and beyond.

### Work and Contributions
Ali Qushji was primarily known as an astronomer and mathematician. He was associated with the Zij-i Sultani, an astronomical table and star catalogue published by Ulugh Beg in 1438–1439. His work would have contributed to the understanding of celestial bodies and mathematical calculations during the Ottoman period.

### Affiliations and Institutions
He worked at several notable institutions:
- Sahn-ı Seman Medrese in Istanbul
- Hagia Sophia in Istanbul
- Ulugh Beg Observatory in Samarkand
- Ulugh Beg Madrasa in Samarkand

### Legacy
His contributions to astronomy and mathematics would have influenced later scholars in the Ottoman Empire and the broader Islamic world. The source material indicates he was a significant figure in the field during his time, with his work continuing to be referenced through his association with important astronomical works.

## References

1. MacTutor History of Mathematics archive
2. [Source](https://islamansiklopedisi.org.tr/ali-kuscu)
3. International Standard Name Identifier
4. Virtual International Authority File
5. Freebase Data Dumps. 2013
6. [Source](https://mathshistory.st-andrews.ac.uk/Biographies/Qushji/)
7. [Ali Qushji  (1403 - 1474) - Biography - MacTutor History of Mathematics](https://mathshistory.st-andrews.ac.uk/Biographies/Qushji/)
8. HMML Authority File
9. Digital Scriptorium Catalog