a person in the record
Anton Pannekoek
Dutch astronomer and Marxist theorist1873 to 1960
Wikidata names H. G. van de Sande Bakhuyzen as doctoral advisor, lists 4 doctoral students, and lists 1 person they taught. Linked to Wikidata, Mathematics Genealogy Project, and 6 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 Wikidata4
From Wikidata, shown separately from the thesis records.
- stated by Wikidataborn 1901
- stated by Wikidataborn 1902
- stated by Wikidataborn 1912
- stated by Wikidataborn 1916
Taught1
Wikidata's "student of" and "student" statements: a line of training beside the lineage, never a thesis supervision and never counted with one.
- a teacher or mentor, stated by Wikidata: not a thesis supervisionborn 1912
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 WikidataH. G. van de Sande Bakhuyzen
- 2 steps up
stated by WikidataFrederik Kaiser
- 3 steps up
stated by WikidataGerard Mollstated by WikidataPieter Johannes Uylenbroek
- 4 steps up
stated by WikidataJean Henri van Swindenstated by WikidataJean-Baptiste Joseph Delambrestated by WikidataJohannes Theodorus Rossijn
Below them, within 3 steps, the record reaches 5 people: 5 stated by Wikidata.
Education and career5
From Wikidata, shown separately from the thesis records. Each place opens its Wikidata item.
- 1918 to 1925worked
- 1925 to 1932worked
- 1932 to 1942worked
- undatedstudied
- undatedstudied