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Affine subgroup of the Möbius group
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Mathematics
Area of mathematics
Algebra
Group theory
Projective linear group
Möbius transformation
Created
2026-09-24
Updated
2026-09-24
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The transformations that take every Euclidean
circle
to
a
Euclidean
circle
are precisely
z
⟼
a
z
+
b
,
a
=
0.
(1)
They form the stabilizer of
infinity
in the Möbius
group
and are not
a
normal subgroup
.
Ancestors
(7)
Möbius transformation
Projective linear group
Group theory
Algebra
Area of mathematics
Mathematics
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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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