# Stephan Kreutzer

> German computer scientist

**Wikidata**: [Q102264594](https://www.wikidata.org/wiki/Q102264594)  
**Source**: https://4ort.xyz/entity/stephan-kreutzer

## Summary
Stephan Kreutzer is a German computer scientist born May 27, 1974, in Kornelimünster/Walheim. He is a prominent researcher in theoretical computer science, particularly in logic and algorithms, with affiliations at Technische Universität Berlin and University of Oxford. His work focuses on algorithmic meta-theorems, graph theory, and computational complexity.

## Biography
- Born: 1974-05-27 in Kornelimünster/Walheim
- Nationality: Germany
- Education: RWTH Aachen University
- Known for: Research in algorithmic meta-theorems and logical aspects of computer science
- Employer(s): Technische Universität Berlin, University of Oxford
- Field(s): Computer science, theoretical computer science, mathematical logic

## Contributions
Stephan Kreutzer has made significant contributions to theoretical computer science, particularly in the areas of algorithmic meta-theorems, graph theory, and computational complexity. His research focuses on the logical foundations of computer science, including work on Courcelle's theorem and its extensions, which connect graph structure with algorithmic tractability. He has supervised several doctoral students including Sebastian Siebertz, Saeed Akhoondian Amiri, and Christoph Dittmann, contributing to the next generation of researchers in the field. His work bridges mathematical logic and practical algorithm design, helping establish fundamental connections between structural graph properties and computational problems. Kreutzer's research has advanced understanding of how logical expressiveness relates to algorithmic complexity, with applications in database theory, verification, and parameterized complexity. His academic career spans prestigious institutions including Technische Universität Berlin and University of Oxford, where he continues to contribute to foundational research in computer science theory.

## FAQs
### Q: Where does Stephan Kreutzer work?
A: Stephan Kreutzer is affiliated with both Technische Universität Berlin and University of Oxford, where he conducts research in theoretical computer science.

### Q: What field does Stephan Kreutzer specialize in?
A: He specializes in theoretical computer science, focusing on algorithmic meta-theorems, mathematical logic, graph theory, and computational complexity.

### Q: Who were Stephan Kreutzer's doctoral advisors?
A: His doctoral advisors were Erich Grädel and Wolfgang Thomas, both prominent researchers in computer science and mathematical logic.

## Why They Matter
Stephan Kreutzer's work has significantly impacted theoretical computer science by advancing our understanding of the relationship between logical expressiveness and algorithmic complexity. His research on algorithmic meta-theorems has helped establish fundamental principles connecting graph structure with computational tractability, influencing how researchers approach complex algorithmic problems. Through his supervision of doctoral students like Sebastian Siebertz, Saeed Akhoondian Amiri, and Christoph Dittmann, he has shaped the careers of emerging researchers in the field. His contributions bridge abstract mathematical logic with practical algorithm design, providing theoretical foundations that inform real-world computational approaches. The methodologies and theoretical frameworks he has developed continue to influence research directions in parameterized complexity, database theory, and formal verification. Without his foundational work, the field would lack crucial insights into how structural properties of computational problems relate to their algorithmic solvability.

## Notable For
• Research in algorithmic meta-theorems connecting graph structure with computational complexity
• Academic positions at prestigious institutions including Technische Universität Berlin and University of Oxford
• Supervision of multiple successful doctoral students in theoretical computer science
• Contributions to mathematical logic foundations of computer science
• International recognition through various academic identifiers and databases

## Body
### Early Life and Education
Stephan Kreutzer was born on May 27, 1974, in Kornelimünster/Walheim, Germany. He pursued his higher education at RWTH Aachen University, a leading technical university in Germany known for engineering and computer science programs.

### Academic Career
Kreutzer holds positions at both Technische Universität Berlin and University of Oxford, demonstrating his international recognition in the field. His dual affiliation reflects the high regard for his research contributions in theoretical computer science.

### Research Focus
His primary research interests lie in algorithmic meta-theorems, which explore the connection between structural properties of graphs and the computational complexity of problems defined on them. This work builds upon foundational results like Courcelle's theorem and extends them to broader classes of problems.

### Doctoral Supervision
Kreutzer has successfully supervised several doctoral students, including Sebastian Siebertz (Dr.-Ing. 2015), Saeed Akhoondian Amiri (Dr. rer. nat. 2017), and Christoph Dittmann (Dr.-Ing. 2017), all from Technische Universität Berlin. This demonstrates his commitment to developing the next generation of researchers in the field.

### Academic Recognition
His work is recognized through multiple academic identifiers including ISNI 0000000020253778, GND ID 128696826, and VIAF ID 8445536, indicating his standing in the international academic community.

### Professional Network
Kreutzer's doctoral advisors were Erich Grädel and Wolfgang Thomas, both distinguished researchers in computer science and mathematical logic, indicating the high caliber of his academic training.

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## References

1. Mathematics Genealogy Project