# Edward Reingold

> American computer scientist

**Wikidata**: [Q5345024](https://www.wikidata.org/wiki/Q5345024)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Edward_Reingold)  
**Source**: https://4ort.xyz/entity/edward-reingold

## Summary
Edward Reingold is an American computer scientist known for his contributions to calendrical algorithms and computational theory. He is a professor emeritus at the University of Illinois Urbana–Champaign and the Illinois Institute of Technology, and a Fellow of the Association for Computing Machinery (ACM).

## Biography
- Born: 1945
- Nationality: United States
- Education:
  - Bachelor of Science in Mathematics, Illinois Institute of Technology (1967)
  - Master of Science in Computer Science, Cornell University (1969)
  - Doctorate in Computer Science, Cornell University (1971)
- Known for: Calendrical algorithms and computational theory
- Employer(s):
  - University of Illinois Urbana–Champaign (until 2000)
  - Illinois Institute of Technology
- Field(s): Computer science, engineering

## Contributions
Edward Reingold is best known for his work on calendrical algorithms, particularly the book *Calendrical Calculations*, co-authored with Nachum Dershowitz. This work provides algorithms for converting between different calendar systems, which have been widely adopted in software applications. His research also includes contributions to computational complexity theory and algorithm design. Reingold has supervised several doctoral students, including Sanjiv Kapoor, James Richard Bitner, and Tanya Y Berger-Wolf, who have gone on to make significant contributions in their own right. His academic career spans decades, with notable affiliations at the University of Illinois Urbana–Champaign and the Illinois Institute of Technology.

## FAQs
### Q: What is Edward Reingold known for?
A: Edward Reingold is known for his work on calendrical algorithms, particularly the book *Calendrical Calculations*, which provides algorithms for converting between different calendar systems.

### Q: Where did Edward Reingold earn his degrees?
A: Reingold earned his Bachelor of Science in Mathematics from the Illinois Institute of Technology in 1967, and his Master of Science and Doctorate in Computer Science from Cornell University in 1969 and 1971, respectively.

### Q: What awards has Edward Reingold received?
A: Reingold was named an ACM Fellow in 1996 for his contributions to computer science.

### Q: Who was Edward Reingold's doctoral advisor?
A: Edward Reingold's doctoral advisor was Juris Hartmanis, a renowned computer scientist and Turing Award winner.

### Q: What is Edward Reingold's notable work?
A: His most notable work is *Calendrical Calculations*, a book that provides algorithms for converting between different calendar systems.

## Why They Matter
Edward Reingold's work on calendrical algorithms has had a lasting impact on the field of computer science. His algorithms are widely used in software applications that require date and time calculations, making them essential for many modern computing systems. Additionally, his contributions to computational theory and his role as a mentor to numerous doctoral students have helped shape the next generation of computer scientists. Without his work, many software applications would lack the robust date and time handling capabilities that are now taken for granted.

## Notable For
- Author of *Calendrical Calculations*, a seminal work on calendrical algorithms
- ACM Fellow (1996)
- Doctoral advisor to several notable computer scientists
- Contributions to computational complexity theory and algorithm design
- Affiliations with prestigious institutions such as the University of Illinois Urbana–Champaign and the Illinois Institute of Technology

## Body
### Early Life and Education
Edward Reingold was born in 1945. He earned his Bachelor of Science in Mathematics from the Illinois Institute of Technology in 1967. He then pursued graduate studies at Cornell University, where he obtained his Master of Science in Computer Science in 1969 and his Doctorate in Computer Science in 1971. His doctoral advisor was Juris Hartmanis, a prominent computer scientist and Turing Award winner.

### Academic Career
Reingold has held academic positions at several prestigious institutions. He was affiliated with the University of Illinois Urbana–Champaign until 2000 and has also been associated with the Illinois Institute of Technology. Throughout his career, he has supervised numerous doctoral students, including Sanjiv Kapoor, James Richard Bitner, Kenneth Jay Supowit, Arthur Sander Goldstein, Tanya Y Berger-Wolf, Xiaojun Shen, and Mitchell Alan Harris.

### Contributions to Computer Science
Reingold's most significant contribution is his work on calendrical algorithms, particularly the book *Calendrical Calculations*, co-authored with Nachum Dershowitz. This work provides algorithms for converting between different calendar systems and has been widely adopted in software applications. His research also includes contributions to computational complexity theory and algorithm design.

### Awards and Honors
In 1996, Reingold was named an ACM Fellow for his contributions to computer science. This prestigious award recognizes his significant impact on the field.

### Legacy
Reingold's work on calendrical algorithms has had a lasting impact on computer science. His algorithms are essential for many modern computing systems that require robust date and time handling capabilities. Additionally, his role as a mentor to numerous doctoral students has helped shape the next generation of computer scientists.

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## References

1. [Source](https://reingold.co/)
2. [Association for Computing Machinery. 2020](https://awards.acm.org/fellows/award-winners)
3. [Source](https://awards.acm.org/fellows/award-recipients)
4. Mathematics Genealogy Project
5. International Standard Name Identifier
6. Virtual International Authority File
7. CiNii Research
8. CONOR.SI
9. NUKAT
10. MAK
11. National Library of Israel Names and Subjects Authority File