Complex surfaces | Algebraic surfaces

Kummer surface

In algebraic geometry, a Kummer quartic surface, first studied by Ernst Kummer, is an irreducible nodal surface of degree 4 in with the maximal possible number of 16 double points. Any such surface is the Kummer variety of the Jacobian variety of a smooth hyperelliptic curve of genus 2; i.e. a quotient of the Jacobian by the Kummer involution x ↦ −x. The Kummer involution has 16 fixed points: the 16 2-torsion point of the Jacobian, and they are the 16 singular points of the quartic surface. Resolving the 16 double points of the quotient of a (possibly nonalgebraic) torus by the Kummer involution gives a K3 surface with 16 disjoint rational curves; these K3 surfaces are also sometimes called Kummer surfaces. Other surfaces closely related to Kummer surfaces include Weddle surfaces, wave surfaces, and tetrahedroids. (Wikipedia).

Kummer surface
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Related pages

Tetrahedroid | Bilinear form | Abelian variety | K3 surface | Projective space | Wave surface | Hyperelliptic curve | Klein configuration | Kummer variety | Linear system | Nodal surface | Kummer configuration | Jacobian variety | Tangent cone | Algebraic geometry | Genus (mathematics) | Weddle surface | Blowing up