# David Borissovich Judin

> Russian mathematician (1919-2006)

**Wikidata**: [Q15804770](https://www.wikidata.org/wiki/Q15804770)  
**Source**: https://4ort.xyz/entity/david-borissovich-judin

## Summary
David Borissovich Judin (1919-2006) was a Russian mathematician known for his pioneering work in mathematical optimization, particularly the development of the ellipsoid method. He also contributed as a programmer and economist across multiple disciplines including control theory, linear programming, and applied mathematics during his academic career.

## Biography
- Born: May 21, 1919, in Dnipro, Ukraine
- Nationality: Soviet Union, Russia
- Education: Doctor of Sciences in Physics and Mathematics; attended Oles Honchar Dnipro National University
- Known for: Development of the ellipsoid method in mathematical optimization
- Employer(s): Lomonosov Moscow State University, National Research University – Higher School of Economics
- Field(s): Mathematical optimization, control theory, linear programming, mathematics, computer programming, mathematical method, economics, applied mathematics

## Contributions
David Borissovich Judin made significant contributions to mathematical optimization through his development of the ellipsoid method, a revolutionary approach for solving convex optimization problems. This method provided the first polynomial-time algorithm for linear programming, representing a major breakthrough in computational mathematics. His work bridged theoretical mathematics with practical applications, influencing fields ranging from economics to computer programming. Judin's research extended beyond optimization to encompass control theory, where he applied mathematical principles to complex systems analysis. Throughout his career, he published numerous papers that advanced the understanding of mathematical methods in various disciplines. His interdisciplinary approach, combining mathematics, programming, and economics, helped establish new frameworks for solving complex problems in the Soviet scientific community and beyond.

## FAQs
### Q: What is David Borissovich Judin most famous for?
A: David Borissovich Judin is most famous for developing the ellipsoid method, a breakthrough in mathematical optimization that provided the first polynomial-time algorithm for linear programming problems.

### Q: Where did David Borissovich Judin work during his career?
A: Judin worked at prestigious institutions including Lomonosov Moscow State University and the National Research University – Higher School of Economics, where he contributed to mathematical research and education.

### Q: What awards did David Borissovich Judin receive?
A: He received notable awards including Honoured Worker of Science and Technology of the RSFSR and the Order of the Patriotic War, 2nd class, recognizing his contributions to science and his service.

### Q: What academic background did David Borissovich Judin have?
A: Judin earned a Doctor of Sciences in Physics and Mathematics degree and was educated at Oles Honchar Dnipro National University, where he built his foundation in mathematical sciences.

### Q: In which fields did David Borissovich Judin contribute?
A: He made significant contributions to multiple fields including mathematical optimization, control theory, linear programming, mathematics, computer programming, economics, and applied mathematics.

## Why They Matter
David Borissovich Judin's work fundamentally transformed mathematical optimization through his development of the ellipsoid method, which introduced the concept of polynomial-time algorithms for solving complex problems. This breakthrough had far-reaching implications for computer science, economics, and operations research, influencing how optimization problems are approached globally. His interdisciplinary approach bridging mathematics, programming, and economics created new frameworks for solving real-world problems. Judin's research laid groundwork for subsequent optimization algorithms that continue to impact fields from logistics to machine learning. Without his contributions, computational optimization would have followed a different trajectory, potentially missing the efficiency breakthroughs that enabled modern large-scale problem solving in various industries.

## Notable For
- Development of the ellipsoid method, a groundbreaking polynomial-time algorithm for linear programming problems
- Recognition as Honoured Worker of Science and Technology of the RSFSR for his scientific contributions
- Receipt of the Order of the Patriotic War, 2nd class, acknowledging his service
- Interdisciplinary work spanning mathematics, programming, and economics
- Academic appointments at both Lomonosov Moscow State University and National Research University – Higher School of Economics

## Body
### Early Life and Education
David Borissovich Judin was born on May 21, 1919, in Dnipro, Ukraine. He pursued his higher education at Oles Honchar Dnipro National University, where he built his foundation in mathematical sciences. Judin went on to earn a Doctor of Sciences in Physics and Mathematics degree, establishing himself as a prominent scholar in the field.

### Academic Career
Throughout his distinguished career, Judin held positions at prestigious academic institutions. He worked at Lomonosov Moscow State University, one of Russia's most prestigious universities, and also served at the National Research University – Higher School of Economics. These appointments placed him at the forefront of mathematical research in the Soviet Union and later Russia.

### Research Contributions
Judin's most significant contribution was the development of the ellipsoid method, which revolutionized mathematical optimization. This method provided the first polynomial-time algorithm for solving linear programming problems, a breakthrough that had profound implications for computational mathematics. His research extended to control theory, where he applied mathematical principles to analyze complex systems. Additionally, he contributed to linear programming, mathematics, computer programming, economics, and applied mathematics, demonstrating his interdisciplinary approach to scientific inquiry.

### Professional Recognition
Judin received several honors during his career, including the prestigious title of Honoured Worker of Science and Technology of the RSFSR. He was also awarded the Order of the Patriotic War, 2nd class, recognizing his service to his country. These acknowledgments underscored his significant contributions to mathematics and science.

### Personal Life and Legacy
David Borissovich Judin passed away on February 8, 2006, in Moscow, Russia, and was buried at Vostryakovo Cemetery. He left behind a legacy of groundbreaking research in mathematical optimization and related fields. His work continues to influence researchers and practitioners in mathematics, computer science, and economics worldwide. Judin's interdisciplinary approach and innovative solutions to complex problems established him as a pivotal figure in 20th-century mathematical science.

## References

1. Czech National Authority Database
2. Integrated Authority File
3. Virtual International Authority File
4. National Library of Israel Names and Subjects Authority File
5. Library of Congress Authorities