a person in the record
Tom Gehrels
Dutch astronomer1925 to 2011
Wikidata names Gerard Kuiper as doctoral advisor and lists 1 doctoral student. Linked to Wikidata, Mathematics Genealogy Project, and 5 other registers.

How to read the markscited by a repository's recordstated by Wikidata or indexed by OpenAlexclaimed on an ORCID list, or inferred
Advisors on Wikidata1
From Wikidata, shown separately from the thesis records.
- stated by Wikidata
Students on Wikidata1
From Wikidata, shown separately from the thesis records.
- stated by Wikidataborn 1950
The line above and below4 steps
The advisors of their advisors, four steps up at most, in the thesis records and on Wikidata, each kind marked; a person in both is listed once.
- 1 step up
stated by WikidataGerard Kuiper
- 2 steps up
stated by WikidataEjnar Hertzsprung
- 3 steps up
stated by WikidataHans E. Laustated by WikidataKarl Schwarzschildstated by WikidataWilhelm Ostwald
- 4 steps up
stated by WikidataArthur von Oettingenstated by WikidataCarl Schmidtstated by WikidataHugo von Seeligerstated by WikidataThorvald N. Thiele
Below them, within 3 steps, the record reaches 1 person: 1 stated by Wikidata.
Education and career3
From Wikidata, shown separately from the thesis records. Each place opens its Wikidata item.
- undatedstudied
- undatedstudied
- undatedworked