# Johnny Zach Emiris

> Ph.D. University of California, Berkeley 1994

**Wikidata**: [Q56153316](https://www.wikidata.org/wiki/Q56153316)  
**Source**: https://4ort.xyz/entity/johnny-zach-emiris

## Summary
Johnny Zach Emiris is a Greek computer scientist and researcher known for his work in computational geometry and algebraic algorithms. He earned his Ph.D. from the University of California, Berkeley in 1994 under the supervision of John Canny.

## Biography
- Born: Not specified
- Nationality: Greek
- Education: Ph.D. in Computer Science, University of California, Berkeley (1994); B.S. in Computer Science, Princeton University (1989)
- Known for: Computational geometry, algebraic algorithms, and scientific computing
- Employer(s): National and Kapodistrian University of Athens; Research Centre Inria Sophia Antipolis - Méditerranée; Athena Research and Innovation Center
- Field(s): Computer science, computational mathematics, geometric computing

## Contributions
Johnny Zach Emiris has made significant contributions to computational geometry and algebraic algorithms, particularly in the areas of polynomial system solving and geometric computing. His research has led to advancements in the design and analysis of algorithms for solving systems of polynomial equations, with applications in robotics, computer-aided design, and scientific computing. Emiris has published extensively in top-tier journals and conferences, including work on sparse elimination theory and the development of software tools for geometric computations. His collaborative projects with Inria and Athena Research have resulted in practical implementations of theoretical algorithms, bridging the gap between abstract mathematics and real-world applications.

## FAQs
### Q: What is Johnny Zach Emiris known for?
A: He is known for his research in computational geometry and algebraic algorithms, particularly in solving polynomial systems and geometric computing applications.

### Q: Where did Johnny Zach Emiris complete his Ph.D.?
A: He completed his Ph.D. in Computer Science at the University of California, Berkeley in 1994.

### Q: Who was Johnny Zach Emiris's doctoral advisor?
A: His doctoral advisor was John Canny, an Australian computer scientist.

## Why They Matter
Johnny Zach Emiris has advanced the field of computational geometry by developing efficient algorithms for solving complex polynomial systems, which are fundamental to many areas of science and engineering. His work has enabled more accurate and faster computations in robotics, computer-aided design, and scientific simulations. By translating theoretical mathematics into practical software tools, Emiris has made these advanced techniques accessible to engineers and researchers, accelerating innovation in multiple disciplines. His leadership in academic and research institutions has also fostered collaboration between theoretical and applied computer science communities.

## Notable For
- Developed algorithms for sparse elimination theory in polynomial systems
- Created software tools for geometric computing with practical applications
- Supervised multiple Ph.D. students in computational mathematics
- Held research positions at Inria and Athena Research Center
- Published extensively in computational geometry and algebraic algorithms

## Body
### Academic Background
Johnny Zach Emiris earned his Bachelor of Science in Computer Science from Princeton University in 1989, followed by a Ph.D. in Computer Science from the University of California, Berkeley in 1994. His doctoral thesis focused on computational geometry and algebraic algorithms under the supervision of John Canny.

### Research Focus
Emiris's research primarily centers on computational geometry, algebraic algorithms, and scientific computing. His work addresses the design and analysis of algorithms for solving systems of polynomial equations, with particular emphasis on sparse elimination theory. This theoretical foundation has practical applications in robotics, computer-aided design, and geometric modeling.

### Software Development
Beyond theoretical contributions, Emiris has developed practical software implementations of his algorithms. These tools have been used in various scientific and engineering applications, demonstrating the real-world impact of his research. His collaborations with research centers like Inria have resulted in robust, efficient software for geometric computations.

### Academic Leadership
As a professor at the National and Kapodistrian University of Athens, Emiris has supervised numerous Ph.D. students, including Elias P. Tsigaridas, George Tzoumas, and Christos Konaxis. His mentorship has helped train the next generation of researchers in computational mathematics and computer science.

### Publications and Impact
Emiris has published extensively in top-tier journals and conferences in computational geometry and algebraic algorithms. His work is widely cited and has influenced both theoretical developments and practical implementations in the field. The algorithms and software he has developed continue to be used in academic and industrial applications worldwide.

## References

1. IdRef
2. [ORCID Public Data File 2020](https://pub.orcid.org/v3.0_rc1/0000-0002-2339-5303/education/3748932)
3. [ORCID Public Data File 2020](https://pub.orcid.org/v3.0_rc1/0000-0002-2339-5303/education/3748919)
4. Mathematics Genealogy Project
5. [Source](https://orcid.org/0000-0002-2339-5303)
6. [ORCID Public Data File 2023](https://pub.orcid.org/v3.0/0000-0002-2339-5303/employment/3748934)
7. [ORCID Public Data File 2023](https://pub.orcid.org/v3.0/0000-0002-2339-5303/employment/14685436)
8. [ORCID Public Data File 2023](https://pub.orcid.org/v3.0/0000-0002-2339-5303/employment/9195129)
9. SHARE Catalogue