# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/axel-harnack
# Generated: 2026-09-01T19:53:02.365Z

schema: https://schema.org/Person
url: "https://fame.am/person/axel-harnack"
name: "Axel Harnack"
slug: "axel-harnack"
description: "Carl Gustav Axel Harnack was a Baltic German mathematician who contributed to potential theory. Harnack's inequality applied to harmonic functions. He also worked on the real algebraic geometry of plane curves, proving Harnack's curve theorem for real plane algebraic curves."
tagline: "Baltic German mathematician (1851–1888)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Axel_harnack.jpg?width=1200"
gender: "male"
category:
  name: "Academics"
  slug: "academics"
profileType:
  name: "Academic"
  slug: "academic"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1851-05-07"
deathDate: "1888-04-03"
livingStatus: "DECEASED"
scores:
  popularity:           46.2
  momentum:             0
  historical:           16.14413333333333
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  60
  trendDirection:       "FALLING"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://zh.wikipedia.org/wiki/%E5%8D%A1%E5%B0%94%C2%B7%E5%8F%A4%E6%96%AF%E5%A1%94%E5%A4%AB%C2%B7%E9%98%BF%E5%85%8B%E5%A1%9E%E5%B0%94%C2%B7%E5%93%88%E7%BA%B3%E5%85%8B"
    title: "卡尔·古斯塔夫·阿克塞尔·哈纳克"
    type:  "WIKIPEDIA"
  - url: "https://arz.wikipedia.org/wiki/%D9%83%D8%A7%D8%B1%D9%84_%D8%AC%D9%88%D8%B3%D8%AA%D8%A7%D9%81_%D8%A7%D9%83%D8%B3%D9%84_%D9%87%D8%A7%D8%B1%D9%86%D8%A7%D9%83"
    title: "كارل جوستاف اكسل هارناك"
    type:  "WIKIPEDIA"
  - url: "https://ca.wikipedia.org/wiki/Carl_Gustav_Axel_Harnack"
    title: "Carl Gustav Axel Harnack"
    type:  "WIKIPEDIA"
  - url: "https://da.wikipedia.org/wiki/Axel_Harnack"
    title: "Axel Harnack"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Axel_Harnack_(Mathematiker)"
    title: "Axel Harnack (Mathematiker)"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Carl_Gustav_Axel_Harnack"
    title: "Carl Gustav Axel Harnack"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Carl_Gustav_Axel_Harnack"
    title: "Carl Gustav Axel Harnack"
    type:  "WIKIPEDIA"
  - url: "https://et.wikipedia.org/wiki/Axel_Harnack"
    title: "Axel Harnack"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%DA%A9%D8%A7%D8%B1%D9%84_%DA%AF%D9%88%D8%B3%D8%AA%D8%A7%D9%81_%D8%A7%DA%A9%D8%B3%D9%84_%D9%87%D8%A7%D8%B1%D9%86%D8%A7%DA%A9"
    title: "کارل گوستاف اکسل هارناک"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Axel_Harnack"
    title: "Axel Harnack"
    type:  "WIKIPEDIA"
  - url: "https://ht.wikipedia.org/wiki/Carl_Gustav_Axel_Harnack"
    title: "Carl Gustav Axel Harnack"
    type:  "WIKIPEDIA"
  - url: "https://id.wikipedia.org/wiki/Carl_Gustav_Axel_Harnack"
    title: "Carl Gustav Axel Harnack"
    type:  "WIKIPEDIA"
  - url: "https://it.wikipedia.org/wiki/Axel_Harnack"
    title: "Axel Harnack"
    type:  "WIKIPEDIA"
  - url: "https://nl.wikipedia.org/wiki/Axel_Harnack"
    title: "Axel Harnack"
    type:  "WIKIPEDIA"
  - url: "https://pl.wikipedia.org/wiki/Karl_Harnack"
    title: "Karl Harnack"
    type:  "WIKIPEDIA"
  - url: "https://pt.wikipedia.org/wiki/Carl_Gustav_Axel_Harnack"
    title: "Carl Gustav Axel Harnack"
    type:  "WIKIPEDIA"
  - url: "https://ru.wikipedia.org/wiki/%D0%93%D0%B0%D1%80%D0%BD%D0%B0%D0%BA%2C_%D0%90%D0%BA%D1%81%D0%B5%D0%BB%D1%8C"
    title: "Гарнак, Аксель"
    type:  "WIKIPEDIA"
  - url: "https://sv.wikipedia.org/wiki/Axel_Harnack_(matematiker)"
    title: "Axel Harnack (matematiker)"
    type:  "WIKIPEDIA"
  - url: "https://tr.wikipedia.org/wiki/Carl_Gustav_Axel_Harnack"
    title: "Carl Gustav Axel Harnack"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q65214"
    title: "Wikidata"
    type:  "WIKIDATA"

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