Felix Klein

German mathematician, author of the Erlangen Program (1849-1925)

  • Fame58.0
  • Momentum0.4
  • Wikipedia6.7K
Source-basedStable
Lived 1849–1925, aged 76Germany
  • Wikipedia
    61 languages
    Cross-language footprint
  • Era
    1849–1925
    Aged 76
  • Awards
    6
    recognised works
Summary
Updated 2026-06-09

Klein's 1872 Erlangen program did for geometry what Darwin did for biology: it found the organizing principle. By showing that every geometry is defined by its symmetry group, he turned a jumble of competing systems into a unified field.

Biography

About

Felix Christian Klein was born 25 April 1849 in Germany and trained in an era when geometries were proliferating — Euclidean, hyperbolic, projective — with no clear framework to relate them. In 1872 he published the Erlangen program, which classified geometries by their underlying symmetry groups and synthesized much of contemporary mathematics in one stroke. His work spanned group theory, complex analysis, and the deep ties between algebra and shape. At Göttingen he built an institution: new chairs, new institutes, seminars that covered nearly every branch of mathematics and its applications.…

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In their own words

Sourced, dated quotes from Felix Klein

Felix Klein
said
In ordinary geometry a surface is conceived as a locus of points; in Lie's geometry it appears as the totality of all the spheres having contact with the surface.
Lectures on Mathematics delivered from Aug. 28 to Sept. 9, 1893 at Northwestern University
Felix Klein
said
It has been the final aim of Lie from the beginning to make progress in the theory of differential equations ...
p. 24
Felix Klein
said
As regards quartic surfaces, Rohn has investigated an enormous number of special cases; but a complete enumeration he has not reached.
p. 29
Felix Klein
said
Next to the elementary transcental functions the elliptic functions are usually regarded as the most important.
p. 34
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The six component signals behind the Fame score, and their ranks across the leaderboards.

Fame
Stable
58.0
Composite of search demand, mentions, audience & graph footprint.
Score components
Momentum0.4
Historical24.2
Now attention2.2
Source confidence60.0
Completeness70.0
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Receipts

Sources

  • Wikidata
    wikidata · wikidata.org
    High confidence
  • Wikipedia
    wikipedia · en.wikipedia.org
    High confidence
  • Pantheon 2.0
    database · pantheon.world
    High confidence