Academic Ancestry

a person in the record

Pjotr Zemjatchenskij

Mineralogist, soil scientist1856 to 1942

Wikidata names Vasili Dokuchayev as doctoral advisor, lists 1 doctoral student, and lists 3 people they taught. Linked to Wikidata, VIAF, and 2 other registers.

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Pjotr Zemjatchenskij, pictured

Two steps up and one down. Solid lines from Wikidata. The full sheet opens at four up and two down.

How to read the marksstated by Wikidata or indexed by OpenAlex

Advisors on Wikidata1

From Wikidata, shown separately from the thesis records.

Students on Wikidata1

From Wikidata, shown separately from the thesis records.

Taught3

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 supervision

    Pyotr Borisov

    born 1878
  • a teacher or mentor, stated by Wikidata: not a thesis supervision

    Q30346055

    born 1882
  • a teacher or mentor, stated by Wikidata: not a thesis supervision

    Veniamin Zilbermintz

    born 1887

The line above and below2 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.

Below them, within 3 steps, the record reaches 2 people: 2 stated by Wikidata.

Education and career3

From Wikidata, shown separately from the thesis records. Each place opens its Wikidata item.