Klein Quartic
The
Klein quartic
x
3
y
+
y
3
z
+
z
3
x
= 0, named after
Felix Klein
, is a
Riemann surface
, and a curve of
genus
3 over the
complex numbers
C
. The Klein quartic has
automorphism group
isomorphic to the
projective special linear group
G
=
PSL(2,7)
. The order 168 of
G
is the
maximum
allowed for this genus 3; and this curve is uniquely determined by requiring that the symmetry is as large as this. Klein's quartic occurs all over mathematics, in contexts including
representation theory
,
homology theory
,
octonion multiplication
,
Fermat's Last Theorem
, and
Stark's theorem
on
imaginary quadratic number fields
of
class number
1.
External links
Polyhedral models of Felix Klein's quartic
The Eightfold Way: The Beauty of Klein's Quartic Curve
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