Statements (21)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:algebraic_geometry
surface ruled surface |
| gptkbp:alsoKnownAs |
quadric surface
|
| gptkbp:automorphismGroup |
gptkb:PGL(2,C)_x_PGL(2,C)
|
| gptkbp:Betti_number_b_2 |
2
|
| gptkbp:dimensions |
2
|
| gptkbp:Euler_characteristic |
4
|
| https://www.w3.org/2000/01/rdf-schema#label |
Hirzebruch surface F 0
|
| gptkbp:isomorphicTo |
gptkb:P^1_x_P^1
product of two projective lines |
| gptkbp:Kodaira_dimension |
-∞
|
| gptkbp:member |
gptkb:Hirzebruch_surfaces
|
| gptkbp:namedAfter |
gptkb:Friedrich_Hirzebruch
|
| gptkbp:Picard_number |
2
|
| gptkbp:projective |
true
|
| gptkbp:rank |
complex numbers
|
| gptkbp:rational |
true
|
| gptkbp:smooth |
true
|
| gptkbp:bfsParent |
gptkb:P^1_×_P^1
|
| gptkbp:bfsLayer |
6
|