# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/sergey-chaplygin
# Generated: 2026-08-13T06:02:08.279Z

schema: https://schema.org/Person
url: "https://fame.am/person/sergey-chaplygin"
name: "Sergey Chaplygin"
slug: "sergey-chaplygin"
description: "Sergey Alexeyevich Chaplygin was a Russian and Soviet physicist, mathematician, and mechanical engineer. He is known for mathematical formulas such as Chaplygin's equation and for a hypothetical substance in cosmology called Chaplygin gas, named after him."
tagline: "Russian mathematician (1869–1942)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Chaplygin_S_A.jpg?width=1200"
gender: "male"
category:
  name: "Academics"
  slug: "academics"
profileType:
  name: "Academic"
  slug: "academic"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1869-04-05"
deathDate: "1942-10-08"
livingStatus: "DECEASED"
scores:
  popularity:           50.94
  momentum:             0
  historical:           20.38290533333334
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  60
  trendDirection:       "FALLING"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://sv.wikipedia.org/wiki/Sergej_Tjaplygin"
    title: "Sergej Tjaplygin"
    type:  "WIKIPEDIA"
  - url: "https://arz.wikipedia.org/wiki/%D8%B3%D9%8A%D8%B1%D8%AC%D9%89_%D8%AA%D8%B4%D8%A7%D9%BE%D9%84%D9%8A%D8%AC%D9%8A%D9%86"
    title: "سيرجى تشاپليجين"
    type:  "WIKIPEDIA"
  - url: "https://az.wikipedia.org/wiki/Sergey_%C3%87apl%C4%B1gin"
    title: "Sergey Çaplıgin"
    type:  "WIKIPEDIA"
  - url: "https://be.wikipedia.org/wiki/%D0%A1%D1%8F%D1%80%D0%B3%D0%B5%D0%B9_%D0%90%D0%BB%D1%8F%D0%BA%D1%81%D0%B5%D0%B5%D0%B2%D1%96%D1%87_%D0%A7%D0%B0%D0%BF%D0%BB%D1%8B%D0%B3%D1%96%D0%BD"
    title: "Сяргей Аляксеевіч Чаплыгін"
    type:  "WIKIPEDIA"
  - url: "https://ca.wikipedia.org/wiki/Serguei_Txapliguin"
    title: "Serguei Txapliguin"
    type:  "WIKIPEDIA"
  - url: "https://cs.wikipedia.org/wiki/Sergej_%C4%8Caplygin"
    title: "Sergej Čaplygin"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Sergei_Alexejewitsch_Tschaplygin"
    title: "Sergei Alexejewitsch Tschaplygin"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Sergey_Chaplygin"
    title: "Sergey Chaplygin"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Sergu%C3%A9i_Chaplyguin"
    title: "Serguéi Chaplyguin"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%D8%B3%D8%B1%DA%AF%D8%A6%DB%8C_%DA%86%D8%A7%D9%BE%D9%84%DB%8C%DA%AF%DB%8C%D9%86"
    title: "سرگئی چاپلیگین"
    type:  "WIKIPEDIA"
  - url: "https://fi.wikipedia.org/wiki/Sergei_T%C5%A1aplygin"
    title: "Sergei Tšaplygin"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Sergue%C3%AF_Tchaplyguine"
    title: "Sergueï Tchaplyguine"
    type:  "WIKIPEDIA"
  - url: "https://he.wikipedia.org/wiki/%D7%A1%D7%A8%D7%92%D7%99%D7%99_%D7%A6'%D7%A4%D7%9C%D7%99%D7%92%D7%99%D7%9F"
    title: "סרגיי צ'פליגין"
    type:  "WIKIPEDIA"
  - url: "https://ht.wikipedia.org/wiki/Sergey_Chaplygin"
    title: "Sergey Chaplygin"
    type:  "WIKIPEDIA"
  - url: "https://hu.wikipedia.org/wiki/Szergej_Alekszejevics_Csapligin"
    title: "Szergej Alekszejevics Csapligin"
    type:  "WIKIPEDIA"
  - url: "https://hy.wikipedia.org/wiki/%D5%8D%D5%A5%D6%80%D5%A3%D5%A5%D5%B5_%D5%89%D5%A1%D5%BA%D5%AC%D5%AB%D5%A3%D5%AB%D5%B6"
    title: "Սերգեյ Չապլիգին"
    type:  "WIKIPEDIA"
  - url: "https://it.wikipedia.org/wiki/Sergej_Alekseevi%C4%8D_%C4%8Caplygin"
    title: "Sergej Alekseevič Čaplygin"
    type:  "WIKIPEDIA"
  - url: "https://ka.wikipedia.org/wiki/%E1%83%A1%E1%83%94%E1%83%A0%E1%83%92%E1%83%94%E1%83%98_%E1%83%A9%E1%83%90%E1%83%9E%E1%83%9A%E1%83%98%E1%83%92%E1%83%98%E1%83%9C%E1%83%98"
    title: "სერგეი ჩაპლიგინი"
    type:  "WIKIPEDIA"
  - url: "https://kk.wikipedia.org/wiki/%D0%A1%D0%B5%D1%80%D0%B3%D0%B5%D0%B9_%D0%90%D0%BB%D0%B5%D0%BA%D1%81%D0%B5%D0%B5%D0%B2%D0%B8%D1%87_%D0%A7%D0%B0%D0%BF%D0%BB%D1%8B%D0%B3%D0%B8%D0%BD"
    title: "Сергей Алексеевич Чаплыгин"
    type:  "WIKIPEDIA"
  - url: "https://ko.wikipedia.org/wiki/%EC%84%B8%EB%A5%B4%EA%B2%8C%EC%9D%B4_%EC%B0%A8%ED%94%8C%EB%A6%AC%EA%B8%B4"
    title: "세르게이 차플리긴"
    type:  "WIKIPEDIA"
  - url: "https://mg.wikipedia.org/wiki/Sergue%C3%AF_Tchaplyguine"
    title: "Sergueï Tchaplyguine"
    type:  "WIKIPEDIA"
  - url: "https://pl.wikipedia.org/wiki/Siergiej_Czap%C5%82ygin"
    title: "Siergiej Czapłygin"
    type:  "WIKIPEDIA"
  - url: "https://pt.wikipedia.org/wiki/Sergei_Tchaplygin"
    title: "Sergei Tchaplygin"
    type:  "WIKIPEDIA"
  - url: "https://ro.wikipedia.org/wiki/Serghei_Ciapl%C3%AEghin"
    title: "Serghei Ciaplîghin"
    type:  "WIKIPEDIA"
  - url: "https://ru.wikipedia.org/wiki/%D0%A7%D0%B0%D0%BF%D0%BB%D1%8B%D0%B3%D0%B8%D0%BD%2C_%D0%A1%D0%B5%D1%80%D0%B3%D0%B5%D0%B9_%D0%90%D0%BB%D0%B5%D0%BA%D1%81%D0%B5%D0%B5%D0%B2%D0%B8%D1%87"
    title: "Чаплыгин, Сергей Алексеевич"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q983316"
    title: "Wikidata"
    type:  "WIKIDATA"

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