Q: What is H.N. de Ridder's primary research focus?

A: H.N. de Ridder specializes in graph theory, particularly in developing and maintaining the Information System on Graph Classes and their Inclusions (ISGCI), a comprehensive database for graph classification.

Q: Where does H.N. de Ridder work?

A: He is a researcher at the Institut für Informatik, Universität Rostock in Germany.

Q: What is the Information System on Graph Classes and their Inclusions?

A: ISGCI is a database that provides detailed information about various graph classes, their properties, and inclusion relationships, serving as a crucial resource for researchers in graph theory and theoretical computer science.

H.N. de Ridder

researcher in graph theory at Institut für Informatik, Universität Rostock

Person Human Q130222968

Facts

9 properties

Instance of: human
Country of citizenship: Germany^[3]
Occupation: researcher, computer scientist
Employer: University of Rostock^[4]
Notable work: Information System on Graph Classes and their Inclusions^[5]
Citizenship: Germany
Email address: mailto:hnridder@informatik.uni-rostock.de, mailto:ernst.de-ridder@uni-konstanz.de
Family name: de Ridder^[6]
Github username: hnridder

🏷️ Also known as

en Ernst de Ridder en H.N. de Ridder

🔖 Identifiers · 6

DBLP author ID: 09/2158
GitHub account: hnridder
ResearchGate profile ID: Hn-De-Ridder-2
Scopus author ID: 7004060914
Semantic Scholar author ID: 145889138
Stack Exchange user ID: 523142

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🔗 Connections

Occupation 2

computer scientist, researcher

Country of citizenship 1

Germany

Employer 1

University of Rostock

Instance of 1

human

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Summary

H.N. de Ridder has worked as a researcher^[1] and computer scientist^[2].

FAQs

What did H.N. de Ridder do for work?

H.N. de Ridder worked as a researcher^[1] and computer scientist^[2].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

[3] ↑ H.N. de Ridder — country of citizenship (P27): Germany. wikidata.org.
[1] ↑ H.N. de Ridder — occupation (P106): researcher. wikidata.org.
[2] ↑ H.N. de Ridder — occupation (P106): computer scientist. wikidata.org.
[4] ↑ H.N. de Ridder — employer (P108): University of Rostock. wikidata.org.
[6] ↑ H.N. de Ridder — family name (P734): de Ridder. wikidata.org.
[5] ↑ H.N. de Ridder — notable work (P800): Information System on Graph Classes and their Inclusions. graphclasses.org. Retrieved 2024-09-03. graphclasses.org. Provenance: wikidata.org.

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APA 4ort.xyz Knowledge Graph. (2026). H.N. de Ridder. Retrieved October 25, 2026, from https://4ort.xyz/entity/h-n-de-ridder

MLA “H.N. de Ridder.” 4ort.xyz Knowledge Graph, 4ort.xyz, 25 Oct. 2026, https://4ort.xyz/entity/h-n-de-ridder.

BibTeX

@misc{4ortxyz_h-n-de-ridder_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{H.N. de Ridder}}, year = {2026}, url = {https://4ort.xyz/entity/h-n-de-ridder}, note = {Accessed: 2026-10-25}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): H.N. de Ridder — https://4ort.xyz/entity/h-n-de-ridder (retrieved 2026-10-25)

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