# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/stephan-cohn-vossen
# Generated: 2026-08-15T05:57:46.067Z

schema: https://schema.org/Person
url: "https://fame.am/person/stephan-cohn-vossen"
name: "Stephan Cohn-Vossen"
slug: "stephan-cohn-vossen"
description: "Stefan Cohn-Vossen was a mathematician, specializing in differential geometry.\nHe is best known for his collaboration with David Hilbert on the 1932 book Anschauliche Geometrie, translated into English as Geometry and the Imagination. Both Cohn-Vossen's inequality and the Cohn-Vossen transformation are named after him. He also proved the first version of the splitting theorem."
tagline: "Russian mathematician (1902–1936)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/StephanCohnVossen_MFO12644.jpg?width=1200"
gender: "male"
country:
  name: "Germany"
  isoCode: "DE"
category:
  name: "Academics"
  slug: "academics"
profileType:
  name: "Academic"
  slug: "academic"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1902-05-28"
deathDate: "1936-06-25"
livingStatus: "DECEASED"
scores:
  popularity:           43.74
  momentum:             1.989528795811518
  historical:           12.208244
  currentAttention:     0
  sourceConfidence:     65
  profileCompleteness:  75
  trendDirection:       "STABLE"
ranks:
  global:   null
  country:  null
  category: null
platforms:
  - platform:  "WEBSITE"
    url:       "http://www.mi.uni-koeln.de/home-institut/Alle/Personen/HistorischesZumInstitut/Person.en.html&COHN-VOSSEN,Stefan"
sources:
  - url: "https://uk.wikipedia.org/wiki/%D0%9A%D0%BE%D0%BD-%D0%A4%D0%BE%D1%81%D1%81%D0%B5%D0%BD_%D0%A1%D1%82%D0%B5%D1%84%D0%B0%D0%BD_%D0%95%D0%BC%D0%B0%D0%BD%D1%83%D1%97%D0%BB%D0%BE%D0%B2%D0%B8%D1%87"
    title: "Кон-Фоссен Стефан Емануїлович"
    type:  "WIKIPEDIA"
  - url: "https://arz.wikipedia.org/wiki/%D8%B3%D8%AA%D9%8A%D9%81%D8%A7%D9%86_%D9%83%D9%88%D9%87%D9%86_%D9%81%D9%88%D8%B3%D9%8A%D9%86"
    title: "ستيفان كوهن فوسين"
    type:  "WIKIPEDIA"
  - url: "https://ca.wikipedia.org/wiki/Stefan_Cohn-Vossen"
    title: "Stefan Cohn-Vossen"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Stefan_Cohn-Vossen"
    title: "Stefan Cohn-Vossen"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Stefan_Cohn-Vossen"
    title: "Stefan Cohn-Vossen"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Stephan_Cohn-Vossen"
    title: "Stephan Cohn-Vossen"
    type:  "WIKIPEDIA"
  - url: "https://ht.wikipedia.org/wiki/Stephan_Cohn-Vossen"
    title: "Stephan Cohn-Vossen"
    type:  "WIKIPEDIA"
  - url: "https://id.wikipedia.org/wiki/Stephan_Cohn-Vossen"
    title: "Stephan Cohn-Vossen"
    type:  "WIKIPEDIA"
  - url: "https://it.wikipedia.org/wiki/Stefan_Cohn-Vossen"
    title: "Stefan Cohn-Vossen"
    type:  "WIKIPEDIA"
  - url: "https://nl.wikipedia.org/wiki/Stefan_Cohn-Vossen"
    title: "Stefan Cohn-Vossen"
    type:  "WIKIPEDIA"
  - url: "https://pl.wikipedia.org/wiki/Stefan_Cohn-Vossen"
    title: "Stefan Cohn-Vossen"
    type:  "WIKIPEDIA"
  - url: "https://pt.wikipedia.org/wiki/Stephan_Cohn-Vossen"
    title: "Stephan Cohn-Vossen"
    type:  "WIKIPEDIA"
  - url: "https://ru.wikipedia.org/wiki/%D0%9A%D0%BE%D0%BD-%D0%A4%D0%BE%D1%81%D1%81%D0%B5%D0%BD%2C_%D0%A1%D1%82%D0%B5%D1%84%D0%B0%D0%BD_%D0%AD%D0%BC%D0%BC%D0%B0%D0%BD%D1%83%D0%B8%D0%BB%D0%BE%D0%B2%D0%B8%D1%87"
    title: "Кон-Фоссен, Стефан Эммануилович"
    type:  "WIKIPEDIA"
  - url: "https://sv.wikipedia.org/wiki/Stefan_Cohn-Vossen"
    title: "Stefan Cohn-Vossen"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q68525"
    title: "Wikidata"
    type:  "WIKIDATA"

# bio (long form, separated for readability)
bio: |
  Imported from discovery source: wikidata-dump