# Karl Longin Zeller

> German mathematician (1924-2006)

**Wikidata**: [Q873433](https://www.wikidata.org/wiki/Q873433)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Karl_Longin_Zeller)  
**Source**: https://4ort.xyz/entity/karl-longin-zeller

## Summary
Karl Longin Zeller (1924–2006) was a German mathematician and university teacher at the University of Tübingen. He earned his doctorate in 1950 and is known for supervising a generation of mathematicians and computer scientists at Tübingen and for receiving an honorary doctorate from the University of Siegen.

## Biography
- Born: 1924-12-28, Šiauliai
- Nationality: Germany
- Education: Doctorate (point in time: 1950), University of Tübingen
- Known for: Long career as a mathematician and university teacher at the University of Tübingen; doctoral supervision of numerous mathematicians and computer scientists
- Employer(s): University of Tübingen
- Field(s): Mathematics; university teaching; computer science

## Contributions
Karl Longin Zeller completed his doctoral degree in 1950 with Konrad Knopp listed among his doctoral advisors; Erich Kamke and George G. Lorentz are also recorded as advisors. He served as a mathematician and university teacher at the University of Tübingen and worked in Tübingen for the bulk of his career. Zeller supervised a substantial group of doctoral students who went on to careers in mathematics and computer science. Notable doctoral students recorded under his supervision include Wilhelm Niethammer, Hansjörg Linden, Gerd Veenker, Franz Pittnauer, Franz Stetter, Manfred Reimer, Walter Johannes Schempp, Franz Locher, Hans‑Michael Möller, and Hans Joachim Schmid. Several of these students—such as Franz Stetter and Gerd Veenker—are identified as German computer scientists, indicating Zeller’s role in mentoring scholars who contributed to mathematics and computing in Germany. He was awarded an honorary doctorate by the University of Siegen. Zeller is recorded in scholarly authority files (ISNI, GND, VIAF) and the Mathematics Genealogy Project (ID 51203), documenting his academic output and mentorship legacy.

## FAQs
### Q: Who was Karl Longin Zeller?
A: Karl Longin Zeller was a German mathematician and university teacher affiliated with the University of Tübingen. He earned his doctorate in 1950 and supervised many doctoral students who became mathematicians and computer scientists.

### Q: When and where was Karl Longin Zeller born and when did he die?
A: He was born on 1924-12-28 in Šiauliai and died on 2006-07-20 in Tübingen.

### Q: What is Karl Longin Zeller known for academically?
A: He is known for his long tenure as a mathematician and university teacher at the University of Tübingen and for advising a generation of doctoral students, several of whom became noted in mathematics and computer science.

## Why They Matter
Karl Longin Zeller’s significance rests primarily on his role as an academic mentor and longstanding faculty member at the University of Tübingen. Completing his doctorate in 1950 under established advisors, he built an academic practice that combined mathematics and university teaching, recorded in multiple national and international authority files. His documented doctoral students include figures who went on to be identified as computer scientists and mathematicians—Franz Stetter and Gerd Veenker among them—showing a direct line of academic influence into the fields of mathematics and early computer science in Germany. Zeller’s recognition by peers is reflected in an honorary doctorate from the University of Siegen and in entries across library and authority databases (ISNI, GND, VIAF, Library of Congress). The preservation of his academic genealogy (Mathematics Genealogy Project ID 51203) and multiple bibliographic identifiers ensures his contributions to mentoring and institutional scholarship remain accessible to researchers tracing disciplinary development and academic lineages in mid‑20th century German mathematics and computing.

## Notable For
- Doctorate completed in 1950 under Konrad Knopp, with advisors including Erich Kamke and George G. Lorentz.
- Long-term mathematician and university teacher at the University of Tübingen.
- Doctoral advisor to multiple students who became mathematicians and computer scientists (e.g., Franz Stetter, Gerd Veenker).
- Recipient of an honorary doctorate from the University of Siegen.
- Listed in major authority and bibliographic databases (ISNI 0000000116977711; GND 1122306474; VIAF 108735683; Mathematics Genealogy Project ID 51203).

## Body
### Early life and education
- Born 1924-12-28 in Šiauliai.
- Educated at the University of Tübingen.
- Awarded a doctorate with point in time 1950. Konrad Knopp is recorded as a doctoral advisor (1950). Erich Kamke and George G. Lorentz are also recorded as advisors.

### Academic career
- Employer: University of Tübingen.
- Work location and primary base: Tübingen.
- Occupations recorded: mathematician; university teacher; also associated with computer science.

### Doctoral supervision and students
- Recorded doctoral students include:
  - Wilhelm Niethammer
  - Hansjörg Linden
  - Gerd Veenker (born 1936; mathematician and computer scientist)
  - Franz Pittnauer
  - Franz Stetter (born 1938; computer scientist)
  - Manfred Reimer
  - Walter Johannes Schempp
  - Franz Locher
  - Hans‑Michael Möller
  - Hans Joachim Schmid
- His students include individuals later identified with German computer science, reflecting his mentorship’s interdisciplinary reach.

### Honors and identifiers
- Award: Honorary doctor of the University of Siegen (award recorded; date not specified in source).
- Authority and bibliographic identifiers:
  - ISNI: 0000000116977711
  - GND: 1122306474
  - VIAF: 108735683
  - Mathematics Genealogy Project ID: 51203
  - Library of Congress Authority ID: n82117591
  - zbMath author ID: zeller.karl

### Personal and language
- Citizenship: Germany.
- Languages spoken/written: German.
- Died: 2006-07-20 in Tübingen.

## Schema Markup
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  "birthDate": "1924-12-28",
  "birthPlace": "Šiauliai",
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## References

1. BnF authorities
2. Mathematics Genealogy Project
3. [Source](https://books.google.cat/books?id=rL8zQA6BUBMC&pg=PA1962)
4. International Standard Name Identifier
5. Virtual International Authority File
6. Freebase Data Dumps. 2013