# Ioannis Georgios Tollis

> Ph.D. University of Illinois at Urbana-Champaign 1988

**Wikidata**: [Q102347450](https://www.wikidata.org/wiki/Q102347450)  
**Source**: https://4ort.xyz/entity/ioannis-georgios-tollis

## Summary
Ioannis Georgios Tollis is a male computer scientist and university teacher known for his contributions to the academic and industrial sectors of computer science. He received his Ph.D. from the University of Illinois at Urbana–Champaign in 1988 under the supervision of noted computer scientist Franco P. Preparata. Tollis has held significant academic positions at the University of Texas at Dallas and the University of Crete.

## Biography
- **Education:** Ph.D., University of Illinois Urbana–Champaign (1988)
- **Doctoral Advisor:** Franco P. Preparata
- **Employer(s):**
    - University of Texas at Dallas (1987–2004)
    - University of Crete (2003–present)
- **Field(s):** Computer Science
- **Languages:** Greek (Native), English
- **Gender:** Male

## Contributions
Ioannis Georgios Tollis has established a career bridging academic research and education in the United States and Greece. His academic lineage is rooted in the University of Illinois Urbana–Champaign, where he obtained his Ph.D. in 1988. During his doctoral studies, he was advised by Franco P. Preparata, a prominent Italian computer scientist and engineer, positioning Tollis within a specific scholarly tradition in the field.

Tollis served as a faculty member at the University of Texas at Dallas (UT Dallas) for 17 years, beginning in 1987 and concluding in 2004. UT Dallas, a public university founded in 1961, was a primary site for his early academic career. In 2003, while still affiliated with UT Dallas, he began his tenure at the University of Crete, transitioning fully to the Greek institution by the end of his contract in Texas. His research and scholarly output are tracked by the computer science community through his DBLP Author ID (55/5488) and MR Author ID (173185). Additionally, his academic genealogy is recorded in the Mathematics Genealogy Project under ID 132145.

## FAQs

### Q: Where did Ioannis Georgios Tollis receive his education?
He received his Ph.D. from the University of Illinois at Urbana–Champaign in 1988.

### Q: Who was Ioannis Georgios Tollis's doctoral advisor?
His doctoral advisor was Franco P. Preparata, an Italian computer scientist and university teacher.

### Q: What universities has Ioannis Georgios Tollis worked for?
He was employed by the University of Texas at Dallas from 1987 to 2004 and has been affiliated with the University of Crete starting in 2003.

### Q: What is Ioannis Georgios Tollis's academic background?
He is a computer scientist and university teacher with a Ph.D. in computer science. He is a native Greek speaker who also speaks English.

## Why They Matter
Ioannis Georgios Tollis plays a significant role in the connection between American and Greek higher education in the field of computer science. His long tenure at the University of Texas at Dallas helped shape the department during its formative years following the university's rapid growth. Furthermore, his move to the University of Crete represents a channel of knowledge transfer between major US research institutions and the Greek academic sector.

His work is recognized through established academic tracking systems, including DBLP and the Mathematics Genealogy Project, indicating a sustained contribution to scientific literature and the mentorship of future scholars. By studying under Franco P. Preparata—a figure with dual citizenship in the US and Italy and a background in engineering—Tollis is part of an international network of computer scientists influencing both theoretical and practical applications of the discipline.

## Notable For
- **Doctoral Lineage:** Studied under Franco P. Preparata, a distinguished figure in computer science.
- **Transatlantic Career:** Maintained a concurrent transition between US (UT Dallas) and Greek (University of Crete) institutions.
- **Academic Recognition:** Listed in the Mathematics Genealogy Project (ID: 132145) and DBLP (ID: 55/5488).
- **Educational Milestone:** Earned a Ph.D. from the University of Illinois Urbana–Champaign in 1988.

## Body

### Education and Early Career
Ioannis Georgios Tollis completed his doctoral studies at the University of Illinois Urbana–Champaign, a public research university established in 1867. He graduated in 1988 with a Ph.D. His dissertation research was conducted under the guidance of Franco P. Preparata.

### Academic Appointments
Tollis's professional career is defined by his association with two major institutions:
*   **University of Texas at Dallas:** Tollis joined this public university in Richardson, Texas, in 1987. He remained there until 2004.
*   **University of Crete:** He began his affiliation with this Greek university in 2003, overlapping with his final year at UT Dallas.

### Professional Identity
Tollis is identified as a computer scientist and university teacher. His native language is Greek, and he is also proficient in English. His professional profile includes distinct identifiers within the academic community:
*   **DBLP Author ID:** 55/5488
*   **MR Author ID:** 173185
*   **Mathematics Genealogy Project ID:** 132145

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## References

1. Mathematics Genealogy Project
2. [Source](https://www.csd.uoc.gr/CSD/uploaded_files/Tollis-CV-2017-Nov.pdf)