# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/ruth-barcan-marcus
# Generated: 2026-08-13T22:14:14.202Z

schema: https://schema.org/Person
url: "https://fame.am/person/ruth-barcan-marcus"
name: "Ruth Barcan Marcus"
slug: "ruth-barcan-marcus"
description: "Ruth Barcan Marcus was an American academic philosopher and logician best known for her work in modal and philosophical logic. She developed the first formal systems of quantified modal logic and in so doing introduced the schema or principle known as the Barcan formula. Marcus, who originally published as Ruth C. Barcan, was, as Don Garrett notes \"one of the twentieth century's most important and influential philosopher-logicians\". Timothy Williamson, in a 2008 celebration of Marcus' long career, states that many of her \"main ideas are not just original, and clever, and beautiful, and fascinating, and influential, and way ahead of their time, but actually – I believe – true\"."
tagline: "American philosopher (1921-2012)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Ruth_Barcan_Marcus.jpg?width=1200"
gender: "female"
country:
  name: "United States"
  isoCode: "US"
category:
  name: "Academics"
  slug: "academics"
profileType:
  name: "Academic"
  slug: "academic"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1921-08-02"
deathDate: "2012-02-19"
livingStatus: "DECEASED"
scores:
  popularity:           47.19
  momentum:             0
  historical:           15.75471733333333
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  70
  trendDirection:       "STABLE"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://uk.wikipedia.org/wiki/%D0%A0%D1%83%D1%82_%D0%9C%D0%B0%D1%80%D0%BA%D1%83%D1%81"
    title: "Рут Маркус"
    type:  "WIKIPEDIA"
  - url: "https://ar.wikipedia.org/wiki/%D8%B1%D9%88%D8%AB_%D8%A8%D8%B1%D9%83%D8%A7%D9%86_%D9%85%D8%A7%D8%B1%D9%83%D9%88%D8%B3"
    title: "روث بركان ماركوس"
    type:  "WIKIPEDIA"
  - url: "https://ca.wikipedia.org/wiki/Ruth_Barcan_Marcus"
    title: "Ruth Barcan Marcus"
    type:  "WIKIPEDIA"
  - url: "https://da.wikipedia.org/wiki/Ruth_Barcan_Marcus"
    title: "Ruth Barcan Marcus"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Ruth_Barcan_Marcus"
    title: "Ruth Barcan Marcus"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Ruth_Barcan_Marcus"
    title: "Ruth Barcan Marcus"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Ruth_Barcan_Marcus"
    title: "Ruth Barcan Marcus"
    type:  "WIKIPEDIA"
  - url: "https://fi.wikipedia.org/wiki/Ruth_Barcan_Marcus"
    title: "Ruth Barcan Marcus"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Ruth_Barcan_Marcus"
    title: "Ruth Barcan Marcus"
    type:  "WIKIPEDIA"
  - url: "https://id.wikipedia.org/wiki/Ruth_Barcan_Marcus"
    title: "Ruth Barcan Marcus"
    type:  "WIKIPEDIA"
  - url: "https://is.wikipedia.org/wiki/Ruth_Barcan_Marcus"
    title: "Ruth Barcan Marcus"
    type:  "WIKIPEDIA"
  - url: "https://it.wikipedia.org/wiki/Ruth_Barcan_Marcus"
    title: "Ruth Barcan Marcus"
    type:  "WIKIPEDIA"
  - url: "https://no.wikipedia.org/wiki/Ruth_Barcan_Marcus"
    title: "Ruth Barcan Marcus"
    type:  "WIKIPEDIA"
  - url: "https://pl.wikipedia.org/wiki/Ruth_Barcan_Marcus"
    title: "Ruth Barcan Marcus"
    type:  "WIKIPEDIA"
  - url: "https://ps.wikipedia.org/wiki/%D8%B1%D9%88%D8%AA_%D8%A8%D8%A7%D8%B1%DA%A9%D9%86_%D9%85%D8%A7%D8%B1%DA%A9%D8%B3"
    title: "روت بارکن مارکس"
    type:  "WIKIPEDIA"
  - url: "https://pt.wikipedia.org/wiki/Ruth_Barcan_Marcus"
    title: "Ruth Barcan Marcus"
    type:  "WIKIPEDIA"
  - url: "https://ru.wikipedia.org/wiki/%D0%9C%D0%B0%D1%80%D0%BA%D1%83%D1%81%2C_%D0%A0%D1%83%D1%82"
    title: "Маркус, Рут"
    type:  "WIKIPEDIA"
  - url: "https://sr.wikipedia.org/wiki/Rut_Barkan_Markusova"
    title: "Rut Barkan Markusova"
    type:  "WIKIPEDIA"
  - url: "https://sv.wikipedia.org/wiki/Ruth_Barcan_Marcus"
    title: "Ruth Barcan Marcus"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q437943"
    title: "Wikidata"
    type:  "WIKIDATA"

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