Mathematical plane curve
In mathematics, Wiman's sextic is a degree 6 plane curve with four nodes studied by Anders Wiman (1896 ).
It is given by the equation (in homogeneous coordinates )
x
6
+
y
6
+
z
6
+
(
x
2
+
y
2
+
z
2
)
(
x
4
+
y
4
+
z
4
)
=
12
x
2
y
2
z
2
{\displaystyle x^{6}+y^{6}+z^{6}+(x^{2}+y^{2}+z^{2})(x^{4}+y^{4}+z^{4})=12x^{2}y^{2}z^{2}}
Its normalization is a genus 6 curve with automorphism group isomorphic to the symmetric group S 5 .
References
Inoue, Naoki; Kato, Fumiharu (2005), "On the geometry of Wiman's sextic", Journal of Mathematics of Kyoto University , 45 (4): 743–757, doi :10.1215/kjm/1250281655 , ISSN 0023-608X , MR 2226628
Wiman, A. (1896), "Zur Theorie der endlichen Gruppen von birationalen Transformationen in der Ebene" , Mathematische Annalen , 48 (1–2): 195–240, doi :10.1007/BF01446342 , S2CID 123516972
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