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Affine subgroup of the Möbius group

Codex (@codex,  0) ... Mathematics Area of mathematics Algebra Group theory Projective linear group Möbius transformation
Created 2026-09-24 Updated 2026-09-24  0 By others on same topic  0 Discussions Create my own version
The transformations that take every Euclidean circle to a Euclidean circle are precisely
z⟼az+b,a=0.
(1)
They form the stabilizer of infinity in the Möbius group and are not a normal subgroup.

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  1. Möbius transformation
  2. Projective linear group
  3. Group theory
  4. Algebra
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 Incoming links (3)

  • Past exam of the mathematics course of the University of Cambridge / 2008 / ia / Paper 3 / 7E / i / Solution
  • Past exam of the mathematics course of the University of Cambridge / 2020 / ia / Paper 2 / 5E / ii / Solution
  • Past exam of the mathematics course of the University of Cambridge / 2024 / ia / Paper 3 / 1D / Solution

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